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International Conference on Gears 2023

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2422 2023

Results in this title

B. Guilbert, D. Dureisseix, P. Velex Hybrid models for the simulation of displacements and stresses in lightweight gears S. 315-328

„… Hybrid models for the simulation of displacements and stresses in light-weight gears Ph.D. B …” „… full finite element simulations.VDI-Berichte Nr. 2422, 2023 3151. IntroductionAs evident from the …” „… hybriden Zahnradmodellen im Gegensatz zu vollständigen Finite-Elemente-Simulationen unterstreicht. Abstract …”

T. Tra My Truong, S. Schumann, B. Schlecht On the Testing of Flank Fracture Calculations Based on 3D-Gears S. 243-256

„… , either by or simulation or theory. The capacity to withstand stress that can derived from VDI-Berichte Nr …” „… stress values close to the simulation. This method overestimates the tensile stress in the beginning and …” „… simulation. Böhme’s approach has also shown cases in which additional compressive stress was found in the …”

F. Reinle, D. Mangherini, A. Bongiovanni Enhancing gear performance through advanced mass finishing and DEM simulation S. 1777-1786

„… to compressive stress. This 2.1 case will be used for a 1:1 DEM simulation comparison. Surprisingly …” „… and velocity. In this simulation, we additionally observed a 22% reduction in normal stress for 2.2 …” „… Enhancing gear performance through advanced mass finishing and DEM simulationM.Sc. Florian Reinle …”

S. Birk, E. Stoppel, V. Labriola Influence of plastic-metal-pairings on the lifetime of gears S. 1535-1546

„… providing simulation and test data. VDI-Berichte Nr. 2422, 2023 1541Fig. 9 shows the contact stress …” „… correction of 0.25° is applied and the simulation results are shown in Fig. 11. The local stress …” „… peak stress loads that will eventually lead to failure of the plastic gear. Another important factor in …”

A. Alnahlaui, P. Tenberge Optimised statistical evaluation for the determination of tooth root endurance strength S. 19-32

„… stresses as with symmetrical clamping. Table 5: New execution of simulation test 1 after decreasing the …” „… simulation is carried out. The statistical investigation allows to make a statistical statement about various …” „… (cumulative distributions function) is: 𝐹 𝑥 𝑓 𝑥 𝑑𝑥 (2) Simulation model From the literatures, there are …”

I. Criscuolo, F. Carneiro, G. Guimarães, R. Rego, J. Mascheroni Indirect Selective Laser Sintering: Modeling and analysis of surface densification by shot peening S. 1681-1698

„… lead to incorrect stress fields and unstable simulation. Refinement seeds were implemented towards the …” „… topography and the residual stress state, were evaluated. The result provides insights, in the perspective of …” „… impact the load capacity of the tooth flank and root. These loading regions are already stress …”

K. Yanagisawa, K. Kamoshida, A. Domon Prediction of Gear Fatigue Life Considering Glass Fiber Orientation S. 1351-1360

„… comparing the root stress calculated by a formula such as the Lewis equation with the S-N diagram which …” „… treat the material as isotropic, but there is no known formula that can calculate root stress …” „… orientation dependence(Fig.1) and stress analysis (FEM) considering glass fiber orientation(Fig.2) and is …”

J.-A. Meis Parametric system simulation of load sharing in planetary gearboxes S. 269-280

„… into account. With the hardware usually available today, detailed simulations of the stresses in the …” „… Parametric system simulation of load sharing in planetary gearboxes Load sharing factor under …” „… Änderungen an der Getriebekonstruktion vorzunehmen. Simulationen zur Vorhersage der Lastverteilung sind …”

P. Fischmann, A. Hilligardt, V. Schulze Tooth Root Burnishing in the Kinematics of Gear Skiving S. 1829-1844

„… specifically machining the point of maximum stress in the gear, which was recorded in the simulation, could …” „… die Prozess- und Werkzeugauslegung wurde eine Simulation zur Berechnung der Kontakttrajektorie und der …” „… loads. This requirement can be satisfied by mechanically imprinting compressive residual stresses which …”

B. Devaux, C. Hamon, S. Montani Evaluation of specialty polymer performances in gear applications and the bias between modeling and testing approaches S. 1515-1532

„… quasi-static simulation step which computes the stresses in the tooth root and the contact pressure at the …” „… simulation step. We can monitor the evolution of the contact pressure, maximal stresses and the sliding speed …” „… define the gear failure mode and its wear rate. Then, the simulation workflow recently implemented by the …”

J. Lövenich, M. Zalfen, D. Mevissen, J. Brimmers, C. Brecher Crack growth based tooth root life prediction model – an influence quantity analysis S. 109-124

„… the tooth root stress over the material depth is first determined by an FEM simulation. The FE …” „… Step 1: Simulation of the local stress state The simulation of the tooth root stress is performed with …” „… local stress, i.e. the ratio K/Kth > 1. VDI-Berichte Nr. 2422, 2023 115Fig. 4: Simulation of tooth root …”

S. Matkovič, D. Šeruga, M. Nagode, M. Kalin Prediction of tooth root fatigue failure of polymer gears for dry and oil lubricated contact and its comparison to experimentally obtained results S. 1301-1318

„… root stress in all contact positions along the path of contact, a quasi-static simulation was …” „… exponent, stress and total strain. However, RO material cannot be directly used in the FEM simulation in …” „… tooth root stress from FEM simulation of gear meshing at 1.0 Nm at different temperatures and under …”

G. Vasileiou, C. Vakouftsis, C. Kalligeros, V. Spitas, C. Papalexis, A. Tsolakis, P. Zalimidis Continuous prestressed reinforcement of plastic gear teeth and its effect on bending strength vs conventional reinforcement S. 1375-1388

„… of maximum stress. 3. Modelling and simulation of reinforced teeth Gear tooth geometry The gear …” „… module. The full modelling and simulation process is discussed thoroughly, including the calculation of …” „… . The minimum calculated gains in bending resistance almost half the tooth root stress in the matrix for …”

M. Rothemund, M. Otto, K. Stahl Applicability of classic analytical calculation approaches for the design of plastic gears S. 1483-1498

„… temperature in the material, the tooth root stress, the contact pressure, and the deformation of the teeth are …” „… ) through (3) show the basic equations for the calculation of temperature, tooth root stress, and contact …” „… stress according to VDI2736. 𝑃 µ ,𝑚 .𝑅 ,𝐴. (1)𝜎𝐹𝑚𝜎 (2)VDI-Berichte Nr. 2422, 20231484𝜎𝐹𝑚1𝜎 …”

M. Willecke, J. Brimmers, C. Brecher Experimental Investigation of the load carrying capacity of beveloid gears with optimized flank topography S. 125-138

„… taking into account the local material and stress condition as well as the tooth flank micro geometry …” „… compared to the results of the calculation method to validate the simulation approach.3. Motivation …” „… a tooth contact simulation that is able to calculate a beveloid tooth contact correctly, validation …”

W. Kassem, J. Müller, M. Oehler, O. Koch Analytical tooth root stress calculation for short fiberreinforced plastic gears S. 1361-1374

„… Analytical tooth root stress calculation for short fiber-reinforced plastic gearsW. Kassem, M.Sc …” „… AbstractThe tooth root stress calculation of fiber-reinforced plastic gears is much more complex than for …” „… approach was developed to such an extent that it can be linked with the tooth root stress calculation of …”

D. Park, A. Rezayat, Y. Gwon Design optimization of multi-stage gear trains with asymmetric teeth under a broad range of torques by incorporating multibody simulations S. 383-396

„… by incorporating multibody simulationsDr. Daehyun Park, Dr. Ali Rezayat, Siemens Industry Software …” „… various key aspects such as transmission error, bearing forces together with gear tooth stress levels, and …” „… of geometries. Therefore, more generic root stress calculation methods for varying tooth proportions …”

L.-C. Chang, Q. Y. Zhuang, S.-J. Tsai, J.-F. Hochrein, S. Landler, M. Otto, K. Stahl Comparing the contact characteristics of involute gear/ eccentric cycloidal gear calculated by various loaded tooth contact analysis models S. 397-412

„… variation of contact stresses underfour different conditions. Additionally, the LTCA model is extensively …” „… obtained from the LTCA simulation results is validated using ANSYS. 1.IntroductionGear engineers rely on …” „… pressure and shear stress. The aim of this paper is to apply an example of involute gears to two different …”

R. Beilicke, D. Bartel, L. Bobach Simulation-based optimization of gearing efficiency using thin coatings S. 975-984

„… Simulation-based optimization of gearing efficiency using thin coatings Dipl.-Ing. Ronny Beilicke …” „… ) Simulationen zum Einsatz kommen. Simulationen bieten die Möglichkeit, in einem frühen Entwicklungsstadium eine …” „… TEHD-Simulationen mit verschiedenen DLC-Schichten wird gezeigt, welchen Einfluss eine Beschichtung von Ritzel …”

I. Atanasovska, D. Momcilovic Analysis of new tooth profile design based on the biomimetics principles S. 945-956

„… paid on the new design of tooth root zones of spur gears in order to decrease the stress concentration …” „… values and increase the tooth root strength. The Finite Element Method is used for stress and strain …” „… tooth root strength analysis, the estimations are based on the Theory of Critical Distances and stress …”

J. Gründer, A. Monz Analytical Method for Calculating the Nominal Tooth Root Stress in Worm Gear Shafts S. 1091-1110

„… , simulation of meshing, and contact stresses for an improved worm gear drive. Mechanism and Machine Theory Vol …” „… Analytical Method for Calculating the Nominal Tooth Root Stress in Worm Gear ShaftsJohannes Gründer …” „… material stress in worm shafts. This paper presents an analytical method based on the nominal stress …”

C. Karampatzakis, A. Mihailidis, A. Mantzaflaris, C. Provatidis Contact simulation of tooth flanks using Isogeometric Analysis S. 413-428

„… .: Computer Simulation/Prediction of Wear in Mechanical Components. Advances in Tribology, 2020, (2020) [6 …” „… Contact simulation of tooth flanks using Isogeometric AnalysisLeveraging the power of high order …” „… mented within the framework of Geometry plus Simulation Modules (G+Smo) [13], an open source isogeometric …”

D. Zorko, N. Vukašinović, B. Černe The effect of gear manufacturing quality on the mechanical and thermal state of a plastic gear S. 1319-1332

„… substantial effect on the stress (root and flank) state of the gear. The effect of lead deviation was found to …” „… not exhibit a substantial improvement in the load distribution and the corresponding stress. Same was …” „… quality is considered by KF and KFα when calculating the root stress 𝜎 ∙ ∙ ∙ ∙ ∙ ∙ ∙ ∙𝐹∙ 𝑚(1) and …”

Titelei/Inhaltsverzeichnis S. I-XXVIII

„… Industries (CETIM), Senlis, FranceHybrid models for the simulation of displacements and stresses in …” „… | 15:31:04 | 148 mm x 210 mm Planetary gears: Load distributionParametric system simulation of load sharing …” „… asymmetric teeth under a broad range of torques by incorporating multibody simulations 383D. Park, A …”

F. Mieth, D. Tazir Local load capacity analysis for the design of a balanced flank modification for cylindrical gears according to bevel gear procedures S. 927-944

„… such procedures, the gear meshing is simplified to a single reference point and a comparative stress is …” „… ] [4]. Depending on the load, the location of the maximum stress or damage can occur at different …” „… be determined more precisely with local consideration of stresses, lubrication coefficients such as …”

A. I. Aydeniz Modelling and Analysis of the Effect of Root Modification on Load Sharing and Stress Values on Spur Gears S. 1039-1062

„… Modelling and Analysis of the Effect of Root Modification on Load Sharing and Stress Values on Spur …” „… stress magnitudes, could be achieved. A computer program was used for the analyses. The program has the …” „… capable of calculating static and dynamic stresses. Since the modification was performed in a critical …”

I. Hong, D. Talbot Tooth Bending Strain Rate Analysis in a Counter Shaft Drivetrain and Implications on Fatigue Strength S. 53-66

„… . ________________________________________________________________________________ Nomenclature Elastic Modulus Mesh Period 𝜎 Gear Tooth Bending Stress Gear Tooth Bending Strain Maximum …” „… the instantaneous material properties and strengths under applied stress in some materials [1]. The …” „… 126 s-1VDI-Berichte Nr. 2422, 202354and 0.063 s-1. It was found that although dynamic stress …”

S. Chen, C. Liu, D. Qin Forward Performance-driven Design of Gear Parameters S. 211-226

„… , localization of contact, simulation of meshing and stress analysis[J]. Computer Methods in Applied Mechanics …” „… contact stress and bending stress are calculated to reflect the load capacity of the gear; The …” „… asymmetric spur gears and found that asymmetric ones have smaller contact stress and transmission errors …”

S. Sartori, L. Alari, N. Motta, D. Podda Helicopter Drive System Safety Dissertation S. 633-644

„… and not only a required final testing phase. Dedicated test campaigns, simulation strategies and …” „… stresses: the functionality and reliability of the failure detection system (namely chip detection) and the …” „… , a detailed evaluation through specific simulations and testing evidences is necessary, ensuring …”

L. Klee, T. Bergs, M. Solf, J. Brimmers Binder Jetting in Gears – Process Design and Tooth Bending Strength for Gears made of 17-4PH S. 1665-1680

„… amplitude as well as the tooth root stress were determined. The mean value of the endurable double amplitude …” „… (NG = 3 106 LC) was 2 FA,mean = 6.26 kN, corresponding to an endurable tooth root stress of F0 …” „… density implies a lower shrinkage during sintering. This results in a reduction of the induced stresses …”

M. Reichl, P. Lenz, A. Oliva Challenges and possibilities of virtual development of e-axle transmissions S. 485-498

„… Challenges and possibilities of virtual development of e-axle transmissionsSPH-Simulation with …” „… bearings. Due to the demand for long simulation times of 30 seconds and more, VOF (Volume of Fluid) based …” „… geometries and kinematics with the required real times.In the following paper an SPH-based simulation method …”

M. Fürst, S. Sepp, D. Schweigert, M. Otto, K. Stahl Experimental Investigation of Moving Contact Pattern in Helical Planetary Gearboxes S. 569-582

„… Simulationen oder umfangreiche experimentelle Prototypentests erforderlich. Ineiner frühen Entwurfsphase sind …” „… wheels and the operating conditions. To determine the exact load distribution, detailed simulations or …” „… a wind turbine gearbox and identified a dependency of the load distribution and tooth root stresses …”

L. Becker, P. Tenberge Crossed helical gears – simulative studies and experimental results on non-involute geometries S. 1499-1514

„… the one on the plastic gear is preferably considered because it is the subject with higher stress …” „… coefficients on the gear behavior and the load parameters, a simulation was carried out with around 300 …” „… calculation and can be imported into the program area of MSC Marc/Mentat. During the simulation, all degrees …”

O. Harris, C. Poyser, R. Patel, O. Shires Developing CAE solutions for Robotics gears: Cycloidal and Strain Wave Gear Drives S. 1111-1124

„… Engineering 490, 2019. [10] E. Yaque-Spaude, Computational Design, Simulation of Meshing, and Stress Analysis …” „… authors are developing design, simulation and analysis solutions for both. The solutions are integrated …” „… (stress and transmission error) and flex spline stresses. Again, a validation exercise versus full FE …”

T. Jagiella, S. Haller, J. Lechner, T. Rung, M. Wöppermann, B. Zeeb Building a software toolchain for automated mass-customization of specific end-use gear unit parts using AM-driven design guidelines S. 1607-1616

„… stress for each simulation is compared to a defined maximum stress including an adjustable VDI-Berichte …” „… optimizes the baseline geometry by removing material. An engineering simulation software (ANSYS) is used to …” „… generated parts typically experience lower stress than manually designed light weighted parts. As the …”

E. Grabovic, A. Artoni, M. Gabiccini, E. Ciulli Exploration of trade-offs between NVH and efficiency in bevel gear design S. 853-880

„… – 57 (2006) [36] Artoni, A.: A methodology for simulation-based, multiobjective gear design …” „… simulation tool. The maximum contact pressures are limited by the material properties, thus proper nonlinear …” „… semi-empirical coefficient formula, while LTCA was carried out using the same simulation tool employed in this …”

J. Vorgerd, P. Tenberge, M. Steinrötter Scuffing load carrying capacity of high-speed gears with an isotropic superfinished surface S. 227-242

„… a stress parameter and an allowable temperature depending on the thermal properties of the …” „… and local stress near the surface of slide-roll contacts. In the context of elastohydrodynamics, the …” „… increase in temperature due to the surface stress, Eq. 1. The flash temperature of a band shaped contact …”

N. Missal, S. Schwertel, M. Ludwig The next level of axial forming for a sustainable component and process chain design S. 1765-1776

„… typical lubrication film breakage for the cold metal forming process caused by the high contact stresses …” „… application of axial forming with frequency modulation as an incremental process, high contact stresses and …” „… efficiently analyze the deformation of various machine designs via structural-mechanical simulations under the …”

J. Zhang, B. Shaw, A. Hammer, I. Sewell Effects of Surface Engineering on the Efficiency of Involute Helical Gears – An Experimental Investigation S. 995-1016

„… stress analysis A 3D finite element (FEA) method was used to determine contact stress numbers of test …” „… gears when running under various loads [12]. For comparison, the contact stresses of test gears were …” „… also rated to the international gear standard ISO 6336-2:2006 [13]. The results of stress analysis …”

S. Sklenak, D. Mevissen, J. Brimmers, C. Brecher, B. Lenz, A. Mehner Analysis of Load Cycles and Local Wear of Dry and Solid-Lubricated Gears S. 727-740

„… coating systems for lubricated tooth contact to reduce stress and wear [13,16–20]. The work of BAGHand …” „… contact in the rolling-sliding contact leads to critical stresses on the solid lubricant coatings [12 …” „… relief of Ca = 85 ± 5 µm on the pinion and wheel is intending to prevent high impact stresses on the …”

S. Sepp, A. Wenig, M. Otto, K. Stahl Acoustical behavior of periodic flank modifications under dynamic operating conditions S. 341-356

„… validated by experimental data.Keywords Gear Noise Excitation, Calculation and Simulation, Periodic Flank …” „… exci-tation behavior for dynamic simulations using static transmission error as the excitation source …” „… the lowest dynamic tooth forces over wide speed ranges. Benatar et al. [16] perform simulations and …”

M. Geitner, S. Preintner, T. Tobie, K. Stahl Simulation Study on the Tribological Characteristics in the Meshing Contact in the Context of the Load Carrying Capacity Calculation of Internal Gears with Unbalanced Sliding Conditions S. 429-450

„… Simulation Study on the Tribological Characteristics in the Meshing Contact in the Context of the …” „… meshing contact. Referring to this, a high-order TEHL contact simulation model was used. The results of …” „… external gear geometries with balanced sliding conditions, a high-order TEHL contact simulation model is …”

M. J. Herberger, F. Rudolph, B. Sievers Efficient concepts for high ratio angular gearboxes S. 801-814

„… calculation, the tooth flank is locally discretized on the basis of a tooth contact simulation. The locally …” „… reliably obtained from the tooth contact simulation. However, several competing approaches exist for …” „… , following the approach given by Predki [11] for worm gearings. Based on a mean Hertzian stress for all …”

U. Kissling Impact of manufacturing deviations on the NVH behavior of modern gear design concepts S. 367-382

„… line modifications are applied to achieve an optimum stress distribution and/or reduced stiffness …” „… profile deviations is analyzed. Then the same procedure is repeated for the simulation of the helix form …” „… , what gear quality to prescribe, so that NVH and/or stress characteristics are not deteriorated too much …”

D. Meyering, C. Hussmann Smart Gearboxes for a Sustainable and Reliable Industry S. 645-658

„… GmbH, Voerde, Germany Abstract In recent years, computer aided calculations and simulations for gearbox …” „… . Therefore, a detailed investigation or simulation of occurring loads for each individual drivetrain is not …” „… stress and load cycles on the kinematic parts of the gearbox (shafts, gears, bearings etc.). For …”

B. Černe, N. Vukašinović, D. Zorko In-situ experimental methods for measuring tooth meshing displacements and wear during polymer gear tests using a high-speed camera with microscopy optics S. 1563-1580

„… conditions subject the gear teeth to significant mechanical stress concentrations at three distinct locations …” „… : the current contact point and both edges of the tooth root. These stress concentrations can initiate …” „… obtainable. To this end, numerical simulation methods, like the finite element method, are often used as …”

A. Drechsel, J. Pellkofer, K. Stahl Transferability of the scuffing load capacity of gear oils determined on spur gears to hypoid gears S. 881-896

„… sliding velocities and high contact stresses in tooth contact with regard to the failure mode scuffing. To …” „… local contact stress of 1689 N/mm² and a maximum local sliding velocity of 0.32 m/s or a sliding …” „… conditions of the new hypoid test method [1] Load stageTorque at pinion in NmMax. local contact stress in …”

J. I. Pedrero, M. Pleguezuelos, M. B. Sánchez Analysis of the tip interference in low gear ratio internal spur gears with profile modification S. 957-974

„… , this will result in higher tooth root stresses, which not always will be an acceptable solution. Root …” „… interference can also be avoided by increasing the dedendum coefficient, but the tooth root stress will …” „… PID2019-110996RB-I00 “Simulation and control of transmission error of cylindric gears”, as well as the …”

C. M. C. G. Fernandes, J. M. A. Pinto, D. E. P. Gonçalves, A. R. Silva Reduction of root and flank temperature using a hybrid polymer-metal rack S. 1547-1562

„… (STD, HT1 and HT2) was compared in the region of interest where larger operating stresses are expected …” „… , increasing the number of elements for each simulation. While defining the mesh density, it was intended to …” „… the gear module which defines the final number of elements. In each new mechanical simulation, the …”

S. Ebrahimi, U. Kissling, C. S. Matkovič Evaluation of the NVH Characteristics of Gear Drives with Plastic Gears by the Forced Response Analysis S. 1403-1418

„… stress distributions along the tooth surfaces were incorporated with the dynamic model to formulate the …” „… contributions which can readily be used in the gear dynamic simulations. Yousfi et al. [9] developed an advanced …” „… that the variation of the 𝑅𝑃 depends on the simulation time and on the locally evaluated position on …”

S. Hendricks, M. Solf, J. Brimmers, T. Bergs Investigation of the machinability of different quenched and tempered steels for the alternative process chain of planetary pinions in wind turbine gearboxes S. 1713-1730

„… [7]. In order to be able to classify the results obtained, a simulation of the gear case was carried …” „… kinematicSimulative analysisThe simulative analysis was performed using the manufacturing simulation SPARTAPRO. Using …” „… heat is dissipated from the cutting point into the workpiece and the tool is subjected to higher stress …”

J. D. M. Marafona, J. H. O. Seabra, P. M. T. Marques, R. C. Martins Effect of overlap ratio on gear dynamic behavior and noise level S. 1239-1256

„… . Considering the numerical simulations performed, it can be concluded that:• Stiffness: increasing the overlap …” „… Considering the Influence of the Tooth Flank Finishing Method, Journal of Vibration, Acoustics, Stress, and …”

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International Conference on Gears 2022

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2389 2022

Results in this title

J.-A. Meis, M. Walkowiak Influence of case hardness depth on tooth interior fatigue fracture S. 863-874

„… starting point for the simulation is the calculation of the stresses below the tooth flank. The stresses …” „… . This stress assessment is usually the most time consuming part of the simulation, because a sufficient …” „… is directly coupled to the stress simulation software and the described method for the strength …”

F. Mieth, C. Ulrich, B. Schlecht Stress calculation on bevel gears with FEM influence vectors S. 585-596

„… Stress calculation on bevel gears with FEM influence vectors Loaded tooth contact analysis with …” „… considered for calculating the local root stress. This method simplifies the coupling stiffness in tooth …” „… for calculating stress with FEM influence vectors is presented. This method enables the calculation of …”

A. Eric, D. Olveda, T. Froschmeier, V. Schulze Local pitting fatigue concept with EHL simulation for case hardened gears in electrical drives S. 133-144

„… simulations with the same conditions as in the gear test to reproduce the exact stress history at the point …” „… maximum local stress is then determined for each simulation as described in the previous section and the …” „… represents the resulting maximum local stress of one pinion gear tooth after 10 EHL simulations with …”

S. Matkovič, M. Kalin Effect of tribological properties on tooth root fatigue failure of polymer gears S. 1257-1268

„… valid stress in tooth root, FEM simulation should be performed. In this manuscript, the two recent …” „… manuscript, changes tooth root stress. Fig. 6: von Mises polymer gear tooth root stress from FEM simulation …” „… of tooth root stress in polymer gear was performed. These methods together provide a coherent set of …”

F. Muller, S. Schumann, B. Schlecht Innovative tooth contact analysis with non-uniform rational b-spline surfaces S. 171-184

„… , Germany Abstract More and more simulation tools are being used in the development of gears in order to …” „… provided by a manufacturing simulation or a geometry import. To determine the exact contact conditions in …” „… realistic results regarding contact stress, tooth root stress and transmission error. 1. Introduction A …”

A. Beinstingel, M. Heider, B. Pinnekamp, S. Marburg Gear mesh excitation and non-uniform rational B-splines S. 91-102

„… , validated and finally applied to a sample gear with special focus on the occurring tooth root stresses …” „… , power density, efficiency and reliability [3]. Therefore, an efficient and accurate simulation …” „… investigates the applicability of this simulation strategy for strength analyses focusing on the tooth root …”

B. van Wissen, M. Kanters, F. Mitsuzuka, K. Iwanaga, M. Meuwissen, A. Hasanovic Predicting static and fatigue performance of fiber reinforced plastic gears S. 1083-1098

„… underestimated by 25%, using the standard J2-plasticity model. The hydrostatic stress situation in the simulation …” „… failure To predict failure for a static load case on a gear application, local stress information is …” „… needed. One of the factors that determines the local stress magnitude is the fiber orientation, which is …”

W. Kassem, M. Oehler, B. Sauer, S. Schmidt, J. Hausmann Investigation of the time-dependent behavior of plastic gears with local tribological simulation S. 1281-1294

„… geometry of size 2 FE analysis Friction simulationTemperature calculation Wear simulationGeometry …” „… multi-physics simulation uses a finite element analysis to accurately calculate the stresses, deformations and …” „… Investigation of the time-dependent behavior of plastic gears with local tribological simulation …”

P. Tenberge, R. Uelpenich, P. Dong, R. He Very fast tooth root optimization – general tool geometry for much smaller tooth root stresses S. 457-468

„… stressesFig. 1 illustrates the critical load condition on a tooth of a gear and the resulting stress condition …” „… maximum tooth root stresses decrease significantly. In the example in Fig.1, a reduction of -15.7% was …” „… root optimization => General tool geometry for much smaller tooth root stressesProf. Dr.-Ing. P …”

K. Kumagai, H. Liu, S. Kurokawa Improving pitting durability by introducing the non-linear wear propagation property of helical gears S. 317-328

„… , Kyushu University, Japan Abstract In this study, a simulation method taking into account sequential …” „… parameter, the variation in the wear propagation rate was obtained depending on the contact stress …” „… a gear tooth surface, because both of the stress and the sliding velocity are different at different …”

P. Roth, M. Hein, K. Stahl Scuffing load capacity calculation of worm gears S. 811-824

„… simulationderived equation (3)02004006008000 200 400 600 800flash tempature (simulation) / °Cflash …” „… numerical temperature simulation for worm gears that considers transient multidimensional heat transfer and …” „… local frictional loading due to the contact. Based on the results of this simulation, this paper derives …”

X. Zheng, Y. Hu FE analysis and predication on the traveling wave – resonance of aero-gears S. 915-926

„… percent 6.98% 13.3% 13.1% Simulation results comparison on tooth stress conditions and displacements is …” „… demonstrate that peak stress and stress fluctuations can be greatly reduced with this method. Introduction …” „… indicate that damping ring can effectively reduce peak stress and stress fluctuations. Combining the above …”

U. Kissling Generation of a torque spectrum from measured torque-speed-time data S. 533-544

„… , starting process or from operation near a critical speed will cause varying stresses at the gear teeth of a …” „… dynamic mass elastic properties of the system and other effects [1]. These variable loads (stresses) may …” „… in question, - calculation, using known external excitation and a mass elastic simulation of the …”

B. James Developing a digital thread linking gear design to manufacturing simulation and metrology S. 185-196

„… Developing a Digital Thread linking Gear Design to Manufacturing Simulation and Metrology Barry …” „… tools have failed to deliver on the promises of Concurrent Engineering since the simulation is …” „… , manufacturing simulation and metrology of cylindrical gears are linked together, marking a significant step …”

K. J. Winkler, T. Tobie, K. Stahl Influence of grinding zones on the tooth root bending strength of case carburized cylindrical gears S. 287-304

„… . Approximated numerical simulations indicate an increase of the occurring stress of 5 – 15 % depending on the …” „… application does not significantly alter the original residual stress state in the tooth root area …” „… the original residual stress state in the tooth root area).  Shot peened gears show a behavior …”

K. Daubach, M. Oehler, B. Sauer Wear simulation of worm gears based on an energetic approach S. 329-342

„… Wear simulation of worm gears based on an energetic approach Dipl.-Ing. K. Daubach, Jun. Prof …” „… smaller gears. In this context a simulation model for abrasive wear of worm gears was developed, which is …” „… in the tooth contact. The physical-based wear simulation model includes a tooth contact analysis and …”

P. Mahendra Rao, S. Foletti, L. Bonaiti, C. Gorla, S. Beretta, F. Concli Mode III threshold under rolling contact fatigue and development of a test gearbox for planet gears S. 499-510

„… mixed approach based on both, numerical simulations and experimental tests is needed. The main goal of …” „… Mode III threshold properties. 2. Assessing the stress state for Mode III crack propagation Initially …” „… , a preliminary analysis that aims to define the complex stress state at, and below the surface at the …”

J. Thomas, C. Gosselin, F. Mieth Design, strength calculation by ISO10300 and loaded TCA of forged differential bevel gears S. 157-170

„… Thomas, Dr.-Ing., ZG Hypoid GmbH, Aschheim; Claude Gosselin, P.Eng., Ph.D., Involute Simulation …” „… design of a differential gear set. The HyGEARS TFG uses a totally general approach for the simulation of …” „… determined with the help of the macro geometry for pitting and tooth root bending stress according to ISO …”

J. Vorgerd, P. Tenberge, M. Joop Scuffing of cylindrical gears with pitch line velocities up to 100 m/s S. 903-914

„… damage location and the surface condition. Based on the experimental results, a simulation approach with …” „… velocities is of great interest. This requires special test rig concepts as well as more accurate simulation …” „… moving heat source. Local loads from Hertzian stress, gear friction and sliding heat the contacting …”

L. Ryali, D. Talbot Dynamic load distribution of planetary gear sets subject to both internal and external excitations S. 389-408

„… . The influence of operating conditions on both system-level response and local gear mesh contact stress …” „… and the ability to predict the contact stress distributions at gear meshes, thus enabling one to have …” „… dynamic characteristics were investigated by Monte Carlo simulations. Bai et al. [23] formulated a model …”

N. Hessinger, M. Braunstingl, H. Bansal Advanced use of DOE in gear geometry optimization S. 281-286

„… provides results regarding root bending stresses [1] of the gearset as well as contact geometry and …” „… transmission error, a base map for dynamic multi-body simulations of the gear set are defined and used within …” „… main performance parameters of the gear design variants, namely root bending stresses, kinematic …”

A. Alnahlaui, P. Tenberge Improved method for the determination of tooth root endurance strength S. 31-44

„… pronounced vibration stress, which results in a fatigue fracture, i.e. damage that only occurs after several …” „… calculation by means of a strength, load capacity or stress capacity characteristic function. The Wöhler curve …” „… . VDI-Berichte Nr. 2389, 202238 To calculate the equivalent stress level of the entire test, the equation of the …”

P. I. Pedrero, D. Martinez–Lopez, M. Pleguezuelos, J. Calvo–Irisarri, M. B. Sanchez, A. Fernandez–Sison Minimum friction losses in wind turbine gearboxes S. 715-730

„… stress levels, is presented. In order to keep the pre-designed operating conditions, all the other …” „… addition, to keep the contact and tooth-root stress levels, the output radii are cal-culated in such a …” „… and gear ratio, which means high torques and stress levels.  Difficult access installations and …”

K. Fukanoki, K. Matsuo, Y. Suzuki, K. Fujiki Practical application of asymmetric tooth root geometry for downsizing automotive transmission gears S. 197-214

„… order to improve tooth root breakage strength, it is necessary to reduce tooth root bending stress. A …” „… key factor in this regard is to relax the stress concentration by increasing the tooth root radius of …” „… field loading frequency). Tooth root bending stress is defined as the criterion for satisfying the …”

A. Gebhard, W. Kassem, M. Oehler Cylinder-on-ring model wear tests as an input data source for the simulation of friction and wear of plastic gears S. 1133-1148

„… . Application of the experimental data in the gear simulationThe experimental results from the tribological …” „… simulationThe gear simulation combines a finite element analysis (FEA) to determine the gear deformation and …” „… the gear simulation.After the input parameters (gear geometry, material data, meshing parameters, etc …”

P. Barreiro, S. Pfrimmer, G. Armutcu, J. Hermes Quality improvement of an aluminum gearbox housing by implementing additive manufacturing S. 1429-1446

„… casting process. The model was built according to given operating conditions. The stress analysis was …” „… right shows the simulation results using Magma Soft concerning the critical solidification zones …” „… cooling. Right: Critically cooled areas of the cast part (Magma Soft). According to the simulation …”

L.-C. Chang, S.-J. Tsai, C.-H. Huang Contact characteristics of cycloid planetary gear drives considering backlashes and clearances S. 215-226

„… influence coefficient method is proposed in the paper. The variation of shared load, contact stress on each …” „… calculate the contact stress distribution. Distance hC of a discrete VDI-Berichte Nr. 2389, 2022 217point on …” „… Fig. 20: Shared loads on the cycloid flanks for cases of bearing clearance 4.4 Contact stress of …”

X. Tian, L. Zhou, J. Han, L. Xia Research on tooth flank twist compensation of continuous generating grinding gear based on flexible electronic gearbox S. 1005-1018

„… design, generation methods, meshing simulation, stress analysis. İmrek et al. [6] modified the face width …” „… dressing the threaded wheel. The simulation results show that this method can effectively compensate for …” „… and transmission performance. In summary, gear modification can significantly optimize the stress …”

P. Rodel, R. Spieler, M. Indenbirken, T. Nuisl Holistic friction optimization of transmissions – a significant contribution for sustainability S. 731-744

„… locally discretized to allow the calculation of locally resolved shear stress and temperature …” „… . 1: Main mutual influences of machine elements in a transmission simulation Schaeffler’s bearing …” „… . Besides the simulation of the elastic behavior of shafts and housings, the calculation of load …”

F. Lagier, A. Bischofberger, K. Bause, S. Ott Suitability of additive manufactured PEEK gears as a means of gear sampling for automotive high-speed gearboxes S. 1045-1060

„… . Bause, S. Ott und M. Albers, Hg., Simulation-based evaluation of high-speed PEEK gears in automotive …” „… causing additional wear and stress onto the gear. A validated evaluation of the achievable inertia …” „… material locally increases the stresses on the component, which cannot withstand the load for which it was …”

A. Spatzig, N. Fujimura, P. de Oliveira Teixeira Practical analysis of productivity of grinding tools in the process of internal generating gear grinding S. 1319-1330

„… process parameter variation. Residual stress showed a less compressive state when using increased values …” „… possible grinding burn as well as a radiographic residual stress determination using a diffractometer for …” „… , without a dressing cycle between them. 5.3 Residual Stress Analysis The residual stress at the surface …”

S. Reitschuster, C. M. Illenberger, T. Tobie, K. Stahl Application of high performance polymer gears in light urban electric vehicle powertrains S. 1181-1196

„… stress (see equation (1)) and the flank pressure (see equation (2)). However, as shown in [13, 14] the …” „… approach described for calculating the occurring tooth root stress does not adequately account for the …” „… size is generally not possible. Calculations by VDI 2736 [1] show ,that the stresses occurring in the …”

S. Bill Efficiency improvement and surface protection by using particle-based phyllosilicate-additive S. 935-942

„… simulation on the SRV test bench with the test load values provided by Optimol. Following parameters were …” „… REWITEC (blue curve). Fig. 2: Friction curve of the FZG simulation performed on SRV test bench in gear …” „… of local load, tribological stress and temperature. VDI-Berichte Nr. 2389, 2022 937 Fig. 4: An …”

Titelei/Inhaltsverzeichnis S. I-XXVIII

„… Transmissions, Chongqing University, Chongqing, ChinaLocal pitting fatigue concept with EHL simulation for case …” „… 157 J. Thomas, ZG Hypoid GmbH, Aschheim, Germany;C. Gosselin, Involute Simulation Softwares Inc …” „… simulation and metrology …”

D. Park, A. Rezayat, Y. Gwen Gear design optimization for multi-mesh and multi-power flow transmissions under a broad torque range incorporated with multibody simulations S. 849-862

„… range incorporated with multibody simulations Dr. Daehyun Park, Dr. Ali Rezayat, Siemens Industry …” „… scenario is translated into a multi-objective optimization in a multibody simulation environment with all …” „… together with gear tooth stress levels, and gear sliding-associated criteria with two example gear pairs …”

N. Tros, J. Brimmers, T. Bergs Approach for multiscale modeling the thermomechanical tool load in gear hobbing S. 1489-1502

„… is presented how a geometric penetration calculation can be com-bined with FEA simulations to a …” „… simulations of the linear-orthogonal cut are used to derive approximate equations for calculating the cutting …” „… the chip formation [10], the cutting forces [11] as well as the tool stresses [12]. LIU ET AL. studied …”

A. Baumann, B. Bertsche Coefficient of friction behavior of gear oils and significance for the meshing process of spur gears S. 745-762

„… velocity and contact pressure. The rheological data is used for simulation of gear contacts. It was found …” „… that the limiting shear stress of the lubricant plays an essential role in the friction behavior [2 …” „… , tooth size, tooth modifications and involute geometry parameters. A simulation approach is used to study …”

F. Donner, T. Scheu, M. Weigand Dynamic simulation of a rotor system with variable speed S. 985-994

„… Dynamic Simulation of a Rotor System with Variable Speed Dipl.-Ing. / M.Sc. Florian Donner …” „… current project VARI-SPEED II the dynamic simulation of the system is built up. The poster describes the …” „… approach to the simulation and shows first results. After completion of the simulation the elaborated rotor …”

D. Mevissen, L. Uhlmann, U. Kupper, J. Brimmers, T. Bergs Analysis of friction of bowl-shaped surface structures resulting from alternative gear manufacturing processes S. 1371-1382

„… compressive stresses, work hardening and to change the part topography in order to improve component …” „… the surface due to the rolling-sliding stresses is analyzed. Objective and Approach Besides the …” „… stresses. Based on the results, the potential of the different surfaces in regard of efficiency is …”

S. Sklenak, J. Brimmers, C. Brecher Analysis of local wear within the dry lubricated rolling- sliding contact of coated surfaces S. 305-316

„… geometry [6, 7]. With the reduction of the sliding speed in the rolling-sliding contact, the thermal stress …” „… contact [5] Another approach to reducing thermal stress in rolling contact is to select a base material …” „… , 2022306service life close to that of the application. However, due to the shock-like stress peaks, ceramic …”

H.-J. Dennig, L. Zumofen, A. Kirchheim, S. Winterberg, D. Stierli Increasing the safety against scuffing of additive manufactured gear wheels by internal cooling channels S. 1345-1364

„… , gearwheels are exposed to mechanical, tribological, thermal and chemical stresses. During operation, the …” „… result of the increased stress, local temperature increases occur, which leads to the lubricant film …” „… lower the critical stresses in the tooth. The search for a possible cooling strategy can be classified …”

W. Wagner, S. Schumann, B. Schlecht Enhanced loaded tooth contact analysis of hypoid gears within a multi-body-system simulation S. 357-370

„… stress recovery in gear train simulations using elastic multibody systems. Proceedings of International …” „… Enhanced Loaded tooth contact analysis of hypoid gears within a multi-body-system simulation …” „… modelling of such systems is complex, challenging and sensitive to its discretisation. The co-simulation …”

M. Furst, J. Gotz, M. Otto, K. Stahl Automation of gearbox design S. 787-802

„… simulation environments are available to evaluate designs. In early design phases, these usually focus only …” „… methods and system simulations. In addition, various research and company-owned software has been …” „… , this reflects an approximation to the idealized shaft contour with constant equivalent stress (e.g …”

T. Matsumura, K. Mioki, M. Kada, R. Okuizumi, A. Pogačnik Improved calculation methodology for the prediction of tooth temperature of plastic gears S. 1237-1248

„… determined using FEM simulations. The actual contact ratio in-creases with increasing temperature because the …” „… establish the method for obtaining the true COF from the actual contact ratio using FEM simulation …” „… method to derive the actual contact ratio under load and the COF in gears by using CAE simulation and ii …”

E. Lamaj, J. Blomeke, F. Rudolph, J. Hermes A comprehensive, fully parametrized calculation model for improved helical-hypoid gearbox efficiency S. 825-836

„… evaluated for different input speeds and oil levels. For the numerical simulation core, Ansys Workbench is …” „… simulation of bevel and hypoid gears is performed by the widely-used BECAL software solution core [7]. It is …” „… conventional approaches like FEM. Thus, BECAL reliably computes local root stress, hertzian pressure and …”

B. Legrady, M. Taesch, G. Tschirschnitz, C. F. Mieth Prediction of churning losses in an industrial gear box with spiral bevel gears using the smoothed particle hydrodynamic method S. 651-664

„… are also accurately captured by the corresponding SPH simulation.The large, tapered bearing facing the …” „… simulation.Contrary to the experiment, some oil ligaments periodically detach from the wheel in the simulation. This …” „… simulations are conducted with the SPH-Software developed by dive solutions GmbH. Analyzing the fluid field of …”

C. Gosselin, B. Leitz Tooth deburring and chamfering: a general approach for 5axis CnC manufacturing S. 1383-1394

„… , Ph.D., P. Eng., Involute Simulation Softwares Inc., Quebec, Canada; Bastian Leitz, B. Ing., Neugart …” „… of tip edge contact where high contact stresses are caused. Chamfering can be performed using …”

B. Schalley, J. Brimmers, T. Bergs Potential and challenges of profile gear grinding with vitrified bonded cBN S. 1569-1582

„… residual stress states can be achieved due to a lower thermal load input into the workpiece [8]. However …” „… as well as regarding a favorable residual stress state [7, 8]. For profile gear grinding, only basic …” „… - Untersuchung - Simulation. 1. Aufl. München: Hanser, 2017 [3] Kempa, B.: Zahnflankenprofilschleifen mit …”

J. Gotz, F. Siglmuller, M. Furst, M. Otto, K. Stahl Experimental investigation of the dynamic load sharing of planetary gearboxes S. 409-420

„… and the operating conditions. Detailed simulations or extensive experimental measurements are required …” „… models with different degrees of freedom form the more simplified simulation models [4, 9, 14, 17, 20, 24 …” „… validate simulation models. The results show good compliance and confirm the calculated results [16, 18, 25 …”

D. Zorko, Z. Bergant, B. Černe Potential of woven carbon fiber reinforced polymer composite gears S. 1071-1082

„… studies, the tooth bending stress was chosen as a comparative parameter. Kurokawa et al. [12,13] and …” „… , On the Design and Simulation of Hybrid Metal-Composite Gears, Applied Composite Materials. 26 (2019 …”

A. Kubo, A. Ueda, R. Uehara Development of IP-bevel gears for industrial operation S. 343-356

„… improved by using simulation program for gear performance. The gear dimension is listed on Table 1. The …” „… improved by using simulation program for gear performance. The gear dimension is listed on Table 1. The …” „… adjustment of gear mounting was carried out to realize this contact pattern. The simulation indicates that …”

C. A. Celikay, A. Donmez, A. Kahraman An experimental study of parametric resonances of a spur gear pair at speeds above its primary resonance S. 511-522

„… ., Kahraman, A.: Experiments on the relationship between the dynamic transmission error and the dynamic stress …” „… ratio on spur gear dynamics, J. Mech. Des., 121 (1999) 112–118 [12] Benton, M., Seireg, A.: Simulation …”

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International Conference on Gears 2019

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2355 2019

Results in this title

C. Brecher, C. Lopenhaus, F. Goergen Transfer of the tooth flank stress into an analogy test concept to provoke the damage pattern tooth flank fracture (TFF) S. 25-36

„… simulation over three pitches. The target value is the stress tensor sequence of the simulated tooth contact …” „… secondary actuator and the stress at the POI (bending beam theory), a simulation at maximum load at the …” „… the simulation by superposition of the stresses from the optimization of the HERTZ- IAN contact in the …”

J.-A. Meis, F. Teklote, M. Borowski Simulation of the tooth root strength under consideration of material quality, finishing process and size effects S. 161-172

„… simulation model was developed to simulate the stresses in the tooth root via FEM, and to perform a strength …” „… FE-simulation is shifted along the mean stress axis by the residual stresses σE. Fig. 2: Haigh-diagram used …” „… identical Summary and Outlook A simulation-based model to predict the tooth root fatigue endurance was …”

M. Uhlig, C. Pastor Simulation tool-chain for plastic gear design S. 1453-1460

„… requirements. Fatigue assessment based on process simulation, structural FE calculation and local stress …” „… Simulation tool-chain for plastic gear design Dipl.-Ing. Martin Uhlig, Robert Bosch GmbH …” „… highly integrated and optimized. Advanced simulation tools allow appropriate design to meet the …”

H. Wang, X. Wen, C. Zhou, Z. Liu Wear prediction for double helical gears grinded by forming method S. 315-330

„… according to the generating principle, and the residual stress is determined by using thermo-mechanical …” „… coupling model of grinding tooth. Then, the residual stress is coupled to three-dimensional finite element …” „… : Double helical gear; Adhesive wear; Gear grinding; Forming method; Residual stress VDI-Berichte Nr …”

A. Weis, T. Deliktas, M. Liewald, N. Missal Cold forging of gear components by a modified Samanta process S. 1765-1776

„… . By means of numerical simulations and forging experiments it was successfully demonstrated that the …” „… process are high notch stresses in the forming zone and gear inaccuracies (Fig. 1b) [6]. In order to …” „… the conventional Samanta process [9] and b) the resulting high notch stress levels [6] 2 …”

F. Muller, S. Schumann, B. Schlecht Determination of S-N curves for pitting based on local damage analysis S. 657-668

„… local damage data, the simulation results from BECAL, e.g. Hertzian stress, are directly linked to the …” „… contact stress and endurable number of load cycles. In order to determine an S-N curve, tests have to be …” „… contact simulation in BECAL [3]. In this way, local load spectra are acquired to determine suitable S-N …”

F. Rudolph, S. Schumann, B. Schlecht Consideration of solid particles in a gear lapping simulation S. 1675-1686

„… convenient level. 2. Simulation Method As discussed above, the local distributions of contact stress and …” „… simulation Local contact stress, sliding velocities, contact distance Calculation of local wear depth …” „… Consideration of solid particles in a gear lapping simulation Dipl.-Ing. Felix Rudolph, Dr.-Ing …”

R. Ratnagiri, M. Kato, H. Kuchelka Advances in polyacetal materials for gears S. 1357-1366

„… fatigue and creep and present results on the effect of loading frequency and stress induced self-heating …” „… illustrate how the combination of fundamental understanding and simulation can lead to improved formulations …” „… Loading A typical constant strain rate tensile stress-strain curve at room temperature is shown in Fig …”

P. Scholzen, C. Lopenhaus, C. Brecher, D. Billenstein, F. Rieg, G. Hammerl Investigation of the influence of elastic gear body structures on the operational behavior of gears S. 785-796

„… objectives of a simulation-compliant degree of detail with the shortest possible calculation time. 7 …” „… load-induced deformations of the elastic environment in the tooth contact a simulation of contact conditions …” „… evaluation of the influence on the operational behavior. First, the method for the simulation of free shaped …”

B. Karpuschewski, T. Lierse, S. Schulze Inline-deep rolling – a new approach to increase tooth root load capacity S. 1787-1798

„… conversion or rather power transfer. This results in a complex, three-dimensional stress state in the tooth …” „… , through the rounding of the tooth root a notch effect arises, which leads to a stress concentration in …” „… this area [1], [6]. By means of numerical simulations, experimental investigations and fracture …”

D. V. Kalinin, J. Y. Temis Influence of tooth profile modification on planetary gear sets dynamic S. 777-784

„… developed to investigate methods of decreasing dynamic loads and analysis of dynamic stresses of gears in …” „… aviation engine drives. The effect of tooth profile modification on the dynamic stresses in the system, as …” „… stresses and vibrations in gears may be caused by using of standard parameters of tooth profile …”

F. Concli, C. Gorla Dynamic models for planetary gearboxes SHM S. 471-480

„… first step of the activities has involved the simulation and validation of models with a back-to-back …” „… hard engineering challenge. Simulations were performed both for the healthy systems as well as in …” „… abovementioned test-rigs was made taking advantage of an innovative numerical approach. The simulations were …”

R. Beilicke, L. Bobach, D. Bartel Transient 3D TEHL simulation of spiral bevel gears under mixed friction conditions S. 529-540

„… elastohydrodynamic simulation of a DLC coated helical gear pair considering limiting shear stress behavior of the …” „… Transient 3D TEHL simulation of spiral bevel gears under mixed friction conditions Dipl.-Ing …” „… Bartel, Otto von Guericke University, Magdeburg Abstract A simulation model for the transient …”

W. Wagner, S. Schumann, B. Schlecht Co-simulation of the tooth contact of bevel gears within a multibody simulation S. 217-228

„… stress recovery in gear train simulations using elastic multibody systems. Proceedings of International …” „… Co-simulation of the tooth contact of bevel gears within a multibody simulation Dipl.-Ing. Wolf …” „… such systems is complex, challenging and sensitive to its discretisation. The co-simulation within a …”

J. Cathelin Material data for advanced plastic gear simulation S. 1335-1344

„… Material Data for Advanced Plastic Gear Simulation Julien Cathelin, Application Technology …” „… , simulation software development and increases in computing power have lead to more and more reliable gear …” „… simulations, but often their full capacity cannot be used due to shortages in gear material data. In this …”

N. Yildirim, M. Yasar, E. Yildirim, F. Erdogan, B. Karatas Experimental verification of improvements in static and fatigue bending capacity of spur gear tooth via tooth root design optimization S. 959-972

„… tooth root and analyzed by using the finite element analysis tools. Maximum principal tensile stresses …” „… seen in figure 2) as fixed. 2D surface analysis with resulting stress distributions are given in …” „… VDI-Berichte Nr. 2355, 2019 961 Fig. 3: Static tooth stresses a) symmetric root b) asymmetric root c)root …”

S. J. Ma, G. Y. Wu, G. Liu Study on the contact characteristics of threaded surfaces in a planetary roller screw mechanism S. 1155-1164

„… analytical model, and the contact stress and the contact area are obtained. In order to obtain the contact …” „… verified via the comparison with analytical results. Lastly, the contact positions and contact stresses on …” „… developed for contact analysis of threaded surface, and the contact positions and contact stresses on the …”

A. Spatzig, N. Fujimura, T. Monden, T. Kikuchi, K. Yoshikawa, A. Georgoussis Machining process solutions to support the reduction of distortion in ring gears after heat treatment S. 1635-1646

„… cutter has an effect on residual stresses after machining. The workpiece, tool, and cutting conditions …” „… Stress Analysis To analyse the influence of the cutting and material conditions on residual stresses in …” „… the workpiece, we have taken the axial and tangential stresses and compared them as equivalent …”

J. I. Pedrero, M. Pleguezuelos, M. B. Sanchez Load sharing model for high contact ratio spur gears with long profile modifications S. 985-996

„… the outer interval of two pair tooth contact. Since the determinant contact stresses are usually …” „… located at the inner points of the contact interval and the determinant tooth-root stresses at the outer …” „… ones, long tip reliefs can be used for balancing both determinant stresses and improving the load …”

F. Concli, L. Maccioni, C. Gorla Power loss analysis of different high-power density gearbox typologies: CFD analysis and experimental measurements on a cycloidal gear set S. 101-114

„… lobe-roll (worst condition). The maximum stress takes place in the contact point between the lobe and the …” „… roller. Indeed, cycloidal profiles present only compression stresses, thus ensuring a better resistance …” „… shape during the simulation. Small cells were inevitably generated causing a significant increment in …”

C. Hegger, T. Kruger, J. Maas Two-speed transmission based on energy-efficient MRF-coupling elements and power split mechanism S. 867-876

„… viscosity, resp. shear stress can be changed by various orders of magnitude. In Fig. 1 the functional …” „… specification of the teeth z on each gear depends only on the permitted mechanical stress, especially in the …” „… stress to prevent leakage and sedimentation effects of the MRF [10]. At certain rotational speeds the …”

L. Ryali, D. Talbot A gear load distribution model for planetary gear set with a flexible carrier S. 809-822

„… such as critical speeds are considered but cannot be used to predict load or stress distributions …” „… necessary as we are only interested in capturing the stiffness of the structure and not the stress …” „… discussed simulations. Table 1: Parameters of the example sequentially phased planetary gear set. Gear …”

Y. Cai, L. Yao, J. Ding, S. Ouyang, J. Zhang Analysis of dynamic transmission error for nutation drive with double circular arc gears under assembly errors and different loads S. 343-354

„… assembly errors and varying load are obtained, and the simulation results are analyzed reasonably by using …” „… stress factor and DTE values collected simultaneously from the same gears. Liu et al. [9] calculated and …” „… simulation respectively. Wu and Liu [10] obtained and analyzed the DTE of toroidal involute gear based on …”

J. Thomas, C. Gosselin, P. Eng Design and rating by means of loaded TCA of straight bevel differential gears S. 493-504

„… Thomas, ZG Hypoid GmbH, Aschheim; Claude Gosselin, P.Eng., Ph.D., Involute Simulation Softwares Inc …” „… exact simulation of the micro geometry; the method is also applicable to forged bevel gears. Once a …” „… approach for the simulation of parallel, concurring and offset axis gears, i.e. spur, helical, face, bevel …”

B. van Wissen, M. Kanters, F. Mitsuzuka, K. Iwanaga, Ir. A. Hasanovic Predicting wear for high performance plastic gears S. 1323-1334

„… the wear rate of both discs. Simulations A 2D plane stress FEM approach was used to model the gear …” „… combines results from a tribological setup, a gear tester, and finite element simulations. It is shown …” „… accumulation was not investigated, since the stresses only during one mesh-cycle were evaluated and are …”

T. Pinel, J. Bruyere, P.Velex, L. Billet Parametric Study of a 3D trochoidal reducer model with involute profile S. 437-448

„… contact stresses and non-sensitivity to the eccentric between the pinion and the ring gear. As this …” „… at each time-step of the simulation. 3. Quasi-static and Dynamic analysis a. Validation of the …” „… the simulation, which is expressed by the effective contact ratio. Two input torques, on an internal …”

P. H. O. Teixeira, C. Lopenhaus, C. Brecher, T. Bergs Discretization of the contact conditions considering the grain engagement for generating gear grinding S. 1739-1748

„… transformations and undesirable residual stress profiles [1]. To avoid the generation of thermal damages during …” „… the residual stress state at the workpiece surface. It is possible to see that around fa = 0.5 mm …” „… , the residual stress state changes from compressive to tensile in the axial direction. An analysis of …”

Z. H. Wu, Y. Q. Xu, K. A. Liu The Analysis on Grease Lubrication at Two Tapered Bodies Contact Considering Surface Roughness S. 1223-1236

„… little reflow back for the grease is characterized by a yield stress and the contact may suffer from …” „… lubricating conditions, and found that the grease yield stress has little effect on the film thickness, while …” „… the yield stress is equal to zero or can be ignored, the Herschel-Bulkley model would be simplified to …”

F. Mieth, B. Schlecht Loaded tooth contact analysis of bevel gears with complex gear body S. 185-192

„… complex gear body geometries are in use, this simplified simulation approach has to be reconsidered …” „… simulation is still performed at one load tooth respectively for the whole gear. VDI-Berichte Nr. 2355 …” „… influence coefficient method with a FEM contact simulation with and without gear body. For this purpose …”

J. Brimmers, M. Willecke, C. Lopenhaus, C. Brecher Investigation of the potential of using surrogate models in the gear design process S. 727-740

„… Simulation-Based Multidisciplinary Design Optimization. AIAA Journal 39(12):2233–2241. doi:10.2514/2.1234 [15 …” „… design of experiments leads to a great number of variants. Even if the duration of the TCA simulation of …” „… models reduces the number of necessary simulations and thus shortens the time period to obtain an …”

H. Blettery, D. Talbot, A. Kahraman, H. Xu A methodology for measurement of loaded transmission error of hypoid gear pair with misalignments S. 619-634

„… contact stress and loaded transmission error. In this study, a methodology to investigate the influence of …” „… . Effects of individual misalignments on loaded TE [15] and root stresses [16] were demonstrated using this …” „… patterns, TE, and pinion and gear stresses. Figure 3 defines these four types of misalignments (three …”

Titelei/Inhaltsverzeichnis S. I-XXVI

„… , Research Institute for Applied Sciences, Ooicho, Kyoto, Japan Transfer of the tooth flank stress into an …” „… : modes, noise and modifications application and validation of simulation and experiment …” „… Simulation of the tooth root strength under consideration of material quality, finishing process and size …”

M. Solf, C. Lopenhaus, T. Bergs Influence of elastic effects on the grinding force in plunging bevel gear grinding S. 1687-1696

„… stress in a fluid between two bodies moving parallel to each other is proportional to the viscosity of …” „… ]. It can therefore be assumed that the shear stress of the grinding oil, which must be overcome by the …” „… Simulation of Grinding Processes. In: CIRP Ann. - Manuf. Technol., 41. Jg., 1992, Nr. 2, S. 677–688 [5 …”

H. Aurrekoetxea, I. Ruiz de Ocenda Experimental and theoretical study of load mesh factor for different boundary conditions in wind gearbox planetary stages S. 835-844

„… the simulation-experimental correlation of 3 Wind Turbine Gearboxes ranging from 2.5MW to 2.8MW, with …” „… tests based on strain gauge measurements. Recorded results are used for simulation model updating in …” „… in which simulations and experimental data obtained by strain gauge measurements at sun gear roots …”

K. Takaki, M. Sugimoto Optimization of hypoid gear macro/micro geometries for high efficiency drives, taking into consideration NVH and strength S. 367-378

„… . ∬ , , , VDI-Berichte Nr. 2355, 2019 369 Fig. 3: Flowchart of simulation program for estimating mesh efficiency …” „… hob Face hob Calculated result Tooth root stress Baseline -8% Contact stress Baseline 2% Contact …”

C. Natali, A. Rezayat, D. Park, P. Jiranek, T. Tamarozzi Analysis of manufacturing variability on the transmission error of an internal gear pair using a multibody framework S. 1099-1110

„… simulation based on different measured tooth flank topologies provided by the manufacturer. The simulated TE …” „… actual operating conditions is the lack of proper simulation tools allowing one to predict the behavior …” „… depends on the type of transmission system and the level of compromise between simulation accuracy and …”

E. Maier, T. Lohner, K. Stahl, P. Sperka, M. Hartl Detailed analyses of film thickness and friction in thermoplastic EHL contacts S. 1391-1400

„… based on white light interferometry are compared to detailed thermo-EHL (TEHL) simulations …” „… shear stresses as boundary conditions [16]. For details, the reader can refer to Maier et al. [2 …” „… , 20191394 Figure 3: Central film thickness obtained by experiment, simulation and calculation from …”

Z. Zhan, H. Liu, C. Xiang, Q. Yan, H. Li, W. Wei, L. Xu Study of lateral and torsional vibration distribution of two-stage planetary gears based on vibration energy theory S. 1245-1252

„… connecting shafts is proposed. Numerical simulations are done to expose the relation of lateral vibration and …” „… torsional vibration. The simulation results show that the proposed method of lateral-torsional vibration …” „… vibration, acoustics, stress, and reliability in design, 106(1), 1984, pp.9-16. [3] Lee, A.S., Ha, J.W …”

B. Schlecht, T. Schulze Improved tooth contact analysis by using virtual gear twins – How helpful is AI for finding best gear design? S. 203-216

„… are load spectra or transient load data from simulations. Under all these conditions, the tooth flank …” „… root stress distribution. 3. Ideas for using AI to find the best gearing geometry and flank …” „… stages without complex calculations or numerical simulations (e.g. loaded tooth contact analysis or …”

D. Mevissen, C. Lopenhaus, T. Bergs Calculation of mixed friction conditions in large-scale rolling-sliding contacts for different surface structures S. 555-568

„… roughness valley) is higher for the simulation than for the experiment. The offset between experiment and …” „… , Paris 6. Love, A. E. H. (1929) The Stress Produced in a Semi-Infinite Solid by Pressure on Part of the …” „… ) The Analysis of Contact Stresses in Rolling Element Bearings. J. Lub. Tech. 101(1): 105–109. doi …”

D. Marino, H. Binz, M. Bachmann Analytical design method for beveloid gears with a small shaft angle and offset S. 391-402

„… applicability of the developed method VDI-Berichte Nr. 2355, 2019 397 using unloaded contact simulations …” „… . Previously validated simulation tools such as SimKoS/BE- CAL are used for contact simulations. The position …” „… and 2 in SimKoS. Combined with the mounting distances, a contact simulation can be performed in …”

S. Matkovič, A. Pogačnik, M. Kalin Comparison between VDI 2736 wear calculation and experimentally obtained results S. 1311-1322

„… simulation using LTCA, wear coefficient is estimated and compared to the theoretically obtained values. 1 …” „… before measurable wear, the output torque was set to 0.35 Nm (root stress of 31.2 MPa according to the …” „… Fig. 2: Teeth profile after a) 15·106, b) 17·106 cycles. Moreover, LTCA simulation method …”

K. Daubach, Manuel Oehler, Bernd Sauer A method to determine local wear of worm gears with highly resolved circumferential backlash curves S. 595-606

„… initial contact pattern increases and thereby the averaged contact stress is reduced. This results in a …” „… Simulation des Verschleißverhaltens von Schneckengetrieben mit unvollständigem Tragbild. Technische …”

F. Siglmuller, U. Weinberger, J. Gotz, M. Sedlmair, T. Lohner, K. Stahl Scaling of planetary gear stages according to gear loss similarity S. 115-126

„… is an important parameter to keep the stress level on the lubricant and surface similar. The …” „… 0.1524 0.2208 vtb base circumferential speed in m/s 23.17 23.17 23.17 23.17 pH hertzian stress in N/mm2 …” „… research project “ASIMOV – Automatisierte Simulationssysteme und Methoden zur Optimierung von …”

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SIMVEC 2022

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2407 2022

Results in this title

S. Rafiee Experimental and theoretical prediction of a micromechanics-based stress state dependent failure model for ductile materials in ABAQUS, LS-DYNA and PAM-CRASH S. 231-248

„… loading. Moreover, in car crash simulations, standard shell elements (i.e., under a nearly plane stress …” „… after the yield stress, the linear and non-linear models calculated from CAE-simulation was close to the …” „… Experimental and theoretical prediction of a micromechanics-based stress state dependent failure …”

J. Weber, P. Ugale, S. Olsson, R. Varela Vehicle Stiffness Evaluation in MBD Simulation Using the ODF Method (Opening Distortion Fingerprint) S. 477-486

„… focus from strain/stress to deformation evaluation of the body. To make this hybrid-simulation more …” „… simulation uses the time history of these forces to calculate the stress/strain in a full trimmed body model …” „… Vehicle Stiffness Evaluation in MBD Simulation Using the ODF Method (Opening Distortion Fingerprint …”

J. Lee, S. Rehfeldt, H. Klein, D. Bäder, A. Eisenträger, J. Kuhnert, I. Michel Two-phase water evaporation MESHFREE CFD method for wet automotive component dry-out time prediction S. 33-44

„… simulation results are validated with a series of experiments that measure the water evaporation rate with a …” „… efficiently generalize the developed simulation method to arbitrary geometrical applications such as …” „… simulations. This is due to the fact that it is a rather complex multi-physics mass-transfer process that …”

D. Bäder, S. Eibl, C. Wolf, P. Kolar, A. Oliva, F. Meyer 3D CFD Simulations of Snow Accumulation in the Wheel House of a Vehicle at different Driving Speeds S. 1-20

„… 3D CFD Simulations of Snow Accumulation in the Wheel House of a Vehicle at different Driving Speeds …” „… vehicle development project. Here, different driving speeds are investigated and the simulation results …” „… reflect reality. For example, the vehicle is usually on rollers, which means that the ground simulation …”

A. Berndt, J. Michy, M. Klein Reduktion der Prozesskomplexität durch Integration der Lebensdauerberechnung in die FEM-Simulation S. 487-500

„… Reduktion der Prozesskomplexität durch Integration der Lebensdauerberechnung in die FEM-Simulation …” „… verwendet. Als eigenständige Simulation führt die Lebensdaueranalyse zu zusätzlichen Anforderungen an den …” „… können. Abstract The fatigue life analysis, based on a stress calculation, is established in …”

C. Witzgall, S. Wartzack Crashsimulation mechanisch ermüdeter kurzfaserverstärkter Thermoplaste: Anisotropes Versagenskriterium zur Berücksichtigung vorausgegangener Schädigung S. 249-262

„… Versagenskriterium zur Berücksichtigung vorausgegangener Schädigung Crash simulation of mechanically fatigued …” „… Kombination der impliziten Simulation der Nutzlastfälle und der Bestimmung der dadurch hervorgerufenen …” „… the maximum tolerable stresses and strains of the material. Such effects are not yet covered in crash …”

Titelei/Inhaltsverzeichnis S. I-XVI

„… x 210 mmInhalt f CFD3D CFD Simulations of Snow Accumulation in the Wheel House of a Vehicle at …” „… Inc., Evanston, USA f Numerische SimulationsverfahrenKontaktlöser der nächsten Generation …” „… , Regensburg f Simulation und OptimierungOptimization approach for powertrain dimensioning of fuel cell vehicle …”

J. Garcke, R. Iza-Teran, M. Pathare, D. Steffes-lai, P. Schwanitz Identifying similarities and exceptions in deformations and mesh functions – Comparing many simulation results automatically S. 277-288

„… simulation results automatically J. Garcke, R. Iza-Teran, M. Pathare, D. Steffes-lai, Fraunhofer SCAI, Sankt …” „… simulation results to detect global events, examples are unexpected deformation behavior or unusual …” „… analyse and automatically categorize design measures together with their impact on simulation results. To …”

P. Schwanitz, L. Greve, F. Moldering Towards AI Based REcommendations for Design Improvement (AI-B-REDI) – A joint research project of Volkswagen, Audi, Porsche, Fraunhofer SCAI, SCALE GmbH and SIDACT GmbH S. 299-314

„… project, various software packages have been developed and extended in order to relieve simulation …” „… model input changes as well as the automatic detection of changes in the simulation response behaviour …” „… extensive crash simulation analyses. The underlying finite element simulation models are co-developed by …”

R. Winstanley, D. Flad, F. Menter, A. Main, Raunak Borker, Anand Singh, R. Jia, J. Maruszewski Next Generation Ansys GPU CFD Solver Technology for External Aerodynamic Applications S. 45-62

„… as of its numerical formulation will be discussed. Large-Eddy Simulations for the DrivAer model with …” „… environmental standpoint. All these aspects become increasingly urgent as CFD simulations move from steady-state …” „… RANS to Scale-Re-solving Simulations like DDES, SBES and LES. An attractive strategy to reduce run-time …”

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Partitioned Fluid-Structure Interaction Simulation of Maritime Applications

Jorrid Lund

Series: Mechanik/Bruchmechanik

Volume 360 2024

Results in this title

Floating windturbine S. 49-61

„… : Reinforced platform and equivalent stress in extreme wave scenariothe end of the simulation. The higher wind …” „… % higher at565.4 Simulation resultsFigure 5.7: Reinforced platform and equivalent stress in extreme wave …” „… design585.4 Simulation resultsFigure 5.10: Equivalent stress of the reinforced FWT in operating …”

Wave energy converter S. 62-70

„… the timeintegration method in the simulation.The fluid is simulated as a two-phase flow using the …” „… the timeintegration method in the simulation.The fluid is simulated as a two-phase flow using the …” „… the beginning of the simulation.This simulation does not include any interaction between the mooring …”

Structural mechanics S. 5-20

„… 1 IntroductionThe purpose of this thesis is to enable this based on FSI simulations using …” „… benefits of the FSI simulations are shownon realistic application cases. Here, the validation and …” „… approach, the FSI simulations are used to show the potential to improve the structureof complexly designed …”

Fluid mechanics S. 21-34

„… important in the context of FSI simulations.The continuity equation (Eq. (3.2)) can also be rewritten with …” „… isespecially important in the context of FSI simulations.The continuity equation (Eq. (3.2)) can also be …” „… loads,which often appear in FSI simulation. Therefore, it is important to have a sufficiently highnumber of …”

Summary and outlook S. 118-123

„… simulations applied inthe development of complex maritime applications. To this end, the thesis starts with …” „… application cases were presented to demon-strate the benefit of FSI simulations for maritime applications. Two …” „… example.As with most of the other simulations in this work, the FWT was simulated withcomana – in a coupled …”

Ship propeller S. 81-117

„… FSI simulation that became apparent in the first ship propeller simulationsis an overestimation of …” „… FSI simulation that became apparent in the first ship propeller simulationsis an overestimation of …” „… coupling iterations (averaged over the entire simulation).The low tolerance is chosen as a reference to …”

Introduction S. 1-4

„… (FSI)simulation of maritime application cases are demonstrated in four different application cases. Tobegin with …” „… , the theoretical basis for the simulation of fluid and structural problems is introduced– in …” „… FSI simulation of a multilayered submersible mixer serves as a validation and verificationcase to …”

Submersible mixer S. 71-80

„… submersible mixer simulation.parameter valueangle increment ∆αf 2°time-step size ∆t 0.00138 stotal simulation …” „… : Angle increment and traction scale factor at the startup of the simulation.convergence acceleration …” „… created with Delaunay triangula-tion.Table 7.2: Parameters for the submersible mixer simulation.parameter …”

Bibliography S. 124-138

„… ] W. Joppich, M. Kürschner, MpCCI — a tool for the simulation of coupled applications,Concurrency and …” „… :10.1016/j.jfluidstructs.2015.04.007.[20] A. Lass, Simulation der Rotordynamik gehäuseloser …” „… simulation of coupled applications,Concurrency and computation: Practice and Experience 18 (2) (2006) 183–192 …”

Fluid-structure interaction S. 35-48

„… boundaries. Itcombines pressure (which is normal to the surface) with the tangential stresses due to the35L …” „… interpolation willbe introduced later.If the mesh topology remains unchanged during the simulation, a constant …” „… . Mesh-based interpolation willbe introduced later.If the mesh topology remains unchanged during the simulation …”

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PIAE Europe 2023

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2418 2023

Results in this title

W. Hübsch, H. Dannbauer, C. Gaier, S. Fischmeister Development process of short-fiber-reinforced plastic components with regard to structural durability S. 301-320

„… simulation, structural stress analysis using the finite element method and service-life calculation, and …” „… simulation are not always optimal for stress analyses and service-life calculations because these meshes …” „… a result of the injection-molding simulation. - The internal stress distributions as result of the …”

F. Wazula, H. Tattko, A. Sumfleth Star panel of the Mercedes Benz EQS – New design meets new challenges S. 33-46

„… front-end and simulations for the low-speed crash and pedestrian protection were started. These analyses …” „… behavior was confirmed. The task was now to develop appropriate optimizations. In the simulations, various …” „… to verify these load cases as well. Fig. 3.1: Simulation of pedestrian protection, schematic …”

G. Gardère, A. Kezmane Composite Material for Automotive Mass Production Applications S. 343-354

„… thermoforming simulation tools, we were able to confirm the part’s feasibility as well as to make improvement …” „… Organosheet GLE Bolster VDI-Berichte Nr. 2418, 2023 347 These thermoforming simulations were conducted all …” „… . The composite components can withstand high mechanical stresses and are about 40% lighter than …”

W. Schijve, R. Bhairi, F. Becker, K. Fischer, M. Emonts Multi-material options for future fire and impact resistant battery casings S. 395-412

„… absorption as is often assumed. Fig. 4: Pole intrusion CAE simulation. Another, also very demanding load …” „… intrusion can be located at any position, and simulations showed that a position midway between cross-beams …” „… , but it was found that this load case actually would mainly cause stress peaks at the bolted …”

F. Groh, R. Apfelbeck, W. v. Gilst, A. Karl Innovative shear panel in plastic for vehicles with shortened battery modules S. 519-532

„… by the high mechanical stresses in the event of a crash load and by the not insignificant …” „… design After evaluating various total vehicle load cases, two types of stress (torsional stiffness (ETS …” „… . The second dimensioning load case from the mechanical stress collective of the shear panel is the …”

F. Meißen, H. Gleich The next level of polymer parts in CAE – From the process to the process chain, from the individual part to the assembly S. 355-362

„… simulation of individual process steps, in the future real boundary conditions of the entire value chain will …” „… have to be included in the simulation. On the one hand, the entire process chain must be mapped in CAE …” „… deviations as quickly as possible and initiate countermeasures. The simulation tools for process chain …”

S. Weidmann, T. Hoffmann, M. Duhovic, J. Weber, P. Mitschang Cutting-edge joining processes for TP-FRPC and multi-material structures made of TP-FRPC and metals S. 673-688

„… comprehensive process simulations, avoiding the need for multiple optimization iteration loops on lab-scale …” „… . This simulation model considered the sliding of the tape layers within the preform during thermoforming …” „… residual stresses induced in the component during the forming process and the cooling phase are also …”

N. Schlutig Pushing the boundaries of eco-solutions based on recycled polypropylene compounds for contributing to sustainable cars of the future S. 213-228

„… . Simulation for supporting the challenges Today offering a sustainable solution without compromising …” „… performance is not enough. Our industry needs to develop even faster and with less cost. Simulation …” „… . Depouhon; R. Assaker, 2009 [9] Mori, T., Tanaka, K., 1973. Average stress in matrix and average elastic …”

doi.org/10.51202/9783181024188

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International Conference on Gears 2017

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2294 2017

Results in this title

J. Reißmann, E. Leidich Computation of the tooth root strength of Worm Wheels with a calculation program based on local stresses S. 373-394

„… local stress due to the tooth contact is derived either by analytical equations or by use of simulation …” „… stresses Dr.-Ing. Jan Reißmann, Prof. Dr.-Ing. Erhard Leidich, Technical University of Chemnitz …” „… 3996 [1] is based on shear stresses. Another algorithm [2] is based on von-Mises equivalent stresses …”

B. Schlecht, F. Rudolph, S. Schumann Experimental studies and simulation of hypoid gear lapping S. 1403-1414

„… Experimental studies and simulation of hypoid gear lapping Prof. Dr.-Ing. Berthold Schlecht …” „… , based on a widely used wear approach and a fast and accurate tooth contact simulation. High-resolution …” „… experimental investigations of lapped tooth flanks are used to evaluate the accuracy of the current simulation …”

J.-A. Meis Flank fracture assessment under consideration of material quality S. 395-398

„… inclusions are in the red area, which has the worst ratio of strength to stress when inclusions are not …” „… unusual big inclusions. A deterministic approach which just judges stress and nominal strength would not …” „… . VDI-Berichte Nr. 2294, 2017 395 Fig. 9: Size and depth of critical inclusions from 2000 simulations …”

T. Frech, C. Löpenhaus, F. Klocke Influence of the contact conditions in cold rolling on the density profile of powder metallurgical (PM) gears S. 1265-1276

„… stress states on the material deformation [4, 5, 6]. Since friction does not influence the normal …” „… the experimentally obtained density profiles, it is expected that the simulation provides an …” „… HERTZ’ian theory [7]. On the bottom of Figure 5, the stresses in the workpiece for two different contact …”

C. Gosselin, E. Fritz, L. Seiler CnC manufacturing of circular faced cylindrical gears S. 1343-1352

„… Simulation Softwares Inc., Canada; E. Fritz, Dipl. Ing. L. Seiler, Product Development, ESA Eppinger GmbH …” „… conditions and lower contact stresses, increased bending stiffness because of the circular face, and a …” „… used to control the lengthwise dimensions of the contact pattern, which conditions contact stresses and …”

A. Furtmann, G. Poll Electrical stress and parasitic currents in machine elements of drive trains with voltage source inverters S. 109-118

„… Electrical stress and parasitic currents in machine elements of drive trains with voltage source …” „… contact [1]. 2. Basics Electrical stress due to inverter induced parasitic currents can be traced back …” „… lubrication To compare the voltage dividing behaviour, a simulation of the drive train with calculated …”

V. Angelopoulos, M. Hirsch PM gear rolling simulations using advanced plasticity material model and improved initial conditions S. 1277-1288

„… PM gear rolling simulations using advanced plasticity material model and improved initial …” „… is to conduct Finite Element (FE) simulations with an elasto-plastic material model adapted for …” „… porous metals. The simulations should predict the resulting deformed geometry and densification, after …”

J. Cathelin, R. Janssen Material data for advanced plastic gear simulation S. 1553-1564

„… Material Data for Advanced Plastic Gear Simulation Julien Cathelin, Application Technology …” „… prototype testing and knowledge gained from the past [6]. In the last decade, simulation software …” „… development and increases in computing power have lead to more and more reliable gear simulations, but often …”

M. Oehler, B. Magyar, B. Sauer A new standardizable calculation method to predict the efficiency of worm gear drives S. 363-372

„… scope of the research project FVA 729 I "Worm Gear Efficiency", a physically based simulation method …” „… different gear sizes and ratios. An extensive parameter study with the use of this simulation program was …” „… ratios. The aim of this work is the development of a physically based simulation method which is …”

M. Ophey, F. Klocke, C. Löpenhaus Approach for modeling grinding worm wear S. 1365-1378

„… acting stress complex, Figure 1. The stress complex results from the temporal movement sequence, the way …” „… Tribological System [10] The stress complex consists of normal force Fn, the relative velocity v between the …” „… contact partners, the temperature T as well as the stress duration tB. The stress complex causes …”

D. Liang, B. Chen, R. Tan, C. Li Tooth profiles design and stress analysis of double helical gear transmissions with geometric elements constructed tooth pairs S. 411-420

„… simulation. Stress analysis of the double helical gear transmissions with geometric elements constructed …” „… for motion simulation. Stress analysis of the double helical gear transmissions with geometric …” „… Tooth profiles design and stress analysis of double helical gear transmissions with geometric …”

C. Brecher, C. Löpenhaus, R. Greschert Influence of the grinding process on the formation of boundary layers on gears S. 1427-1438

„… residual stress profiles. By combining boundary layer measurements and upcoming gear tests, correlations …” „… surface roughness and residual VDI-Berichte Nr. 2294, 20171428 stresses in an uncompensable way. However …” „… stress states, but different ways of energy input [7]. Especially against the background of upcoming …”

B. Schlecht, F. Müller, S. Schumann Simulation and measurement of tooth flank deviations on bevel gears caused by pitting and micro pitting S. 293-304

„… Simulation and measurement of tooth flank deviations on bevel gears caused by pitting and micro …” „… addition, the simulation is validated by experimental results. In order to gain knowledge about the …” „… increasing damage a new measurement technique is introduced. Finally, the simulation and experimental results …”

Titelei/Inhaltsverzeichnis S. I-XXVII

„… Material D. Talbot, Simulation of gear wear using a dynamic load 5 A. Kahraman distribution model M. Ebner …” „… L. Gondecki, Simulation and test method for the lubricant’s influence 29 M. Weibring, on the wear …” „… Planetary Gear Systems – Design and Analysis S. Grützner Holistic simulation of gearboxes – system …”

H. B. Endeshaw, S. Ekwaro-Osire, F. M. Alemayehu, J. P. Dias Estimation of remaining useful life of gears with uncertainties in loading and material parameters S. 1063-1072

„… in the crack size also caused an increase in the stress intensity factor. Finally, it was shown …” „… build a finite element model for the crack propagation in the gear tooth to determine the stress …” „… frequency of the input shaft is 30 Hz. 2.2. Calculation of Stress Intensity Factor The model of the …”

A. K. Shojaei, P. Volgers, M. Cassata Advanced modeling and experimental techniques for fatigue life prediction of plastic gears S. 1575-1582

„… simulation of plastic gears’ lifetime, durability, and load sharing. The methodology is verified through …” „… . The proposed simulation tool can predict fatigue crack initiation/propagation, cyclic plasticity …” „… developed for metals may not be directly applicable to polymers and PMCs and more advanced simulation …”

C. Brecher, C. Löpenhaus, F. Goergen, D. Mevissen Crack propagation analysis of pitting damages of high-strength material systems in gear applications S. 281-292

„… detailed analysis of pitting characteristics and on the comparison with local stress components …” „… depth of the ruptured zone correlates with the maximum von Mises equivalent stress. In contrast, the …” „… stresses. The center of the fatigue zone is in the same depth as the overlapping direction of the maximum …”

R. Meissner, M. Liewald, T. Benkert, M. Hiller, W. Volk Multi-component gearwheels and their manufacturing processes S. 1299-1306

„… segments preventing impermissible tangential tension stress of the gear ring during and after forming. The …” „… wheel body Two fundamental simulations were conducted – the forming process and a subsequent …” „… ring is rotated. Simulation runs until plastic deformations within the wheel body occur or until the …”

E. Maier, A. Ziegltrum, T. Lohner, K. Stahl Characterization of TEHL contacts of thermoplastic gears S. 1483-1496

„… . Investigations are carried out numerically on a finite-element based TEHL simulation model (tribosimulation) and …” „… ) = 95 cSt, (100°C) = 10 cSt, ρ(15°C) = 885 kg/m3). 3.2 Tribosimulation The classical simulation …” „… stiffness causes also tangential deformations by lubricant shear stress which result in a local reduction …”

S. Ishikawa, Y. Murayama, S. Kishi A strain wave gearing with a new profile of teeth S. 815-824

„… gear. Therefore, the stresses by deflection of flexible external gear and by the device torque are …” „… doubled. In this paper, the two stresses are perfectly separated by the special tooth profile. Therefore …” „… flexible external gear by the modification of the tooth height. The graphic simulation of tooth meshing on …”

A. K. Shojaei, P. Volgers An improved lifetime prediction technique for plastic gears through finite element analysis and continuum damage mechanics S. 1109-1112

„… to polymers and PMCs and more advanced simulation techniques are required for lifetime prognosis of …” „… considerations such as local orientation of molecular chains, crystallization, residual stress, shrinkage and …” „… residual stresses may lower the lifetime several orders of magnitude, while a compressive state of …”

C. Brecher, C. Löpenhaus, J. Pollaschek Influence of surface layer properties on tooth root bending strength of cylindrical gears S. 421-432

„… furthermore able to determine local stresses and push the gear design closer into areas closer to the limits …” „… capacity, he uses a modified form of the normal VDI-Berichte Nr. 2294, 2017422 stress hypothesis as well …” „… residual stresses in a two-dimensional space. to calculate the strain he uses commercial FE-systems. He …”

L. Gondecki, M. Weibring, P. Tenberge Simulation and test method for the lubricant’s influence on the wear and fatigue mechanisms on tooth flanks S. 29-40

„… Simulation and test method for the lubricant’s influence on the wear and fatigue mechanisms on …” „… contact. These layers protect the gear material against external stress and initiate a surface …” „… peaks increases so that the local stresses deviate and exceed the Hertzian stress figures. Additionally …”

P. Garambois, E. Rigaud, J. Perret-Liaudet Robust optimization of gear macro and micro-geometries in order to minimize static transmission error and gear stiffness fluctuations S. 927-938

„… robustness of solution to manufacturing errors is evaluated by performing Monte Carlo simulations for a …” „… transmission error and mesh stiffness requires an analytical tooth bending model. Monte-Carlo simulations are …” „… Monte-Carlo simulation is performed with 1000 manufacturing random error samples, and a power density …”

C. Brecher, C. Löpenhaus, J. Brimmers Potential of free flank modifications for beveloid gears S. 553-564

„… improve the operating behavior. Therefore, a design method and manufacturing simulation for free flank …” „… manufacturing simulation. In this report, an ideal flank geometry based on the manufacturing simulation …” „… values – Peak-to-peak value of accum. transmission error – Max. flank pressure – Max. tooth root stress …”

P. Norgauer, W. Sigmund, D. Kadach, K. Stahl Comprehensive simulation methods for crossed helical gear sets with the main focus on the calculation of contact patterns S. 353-362

„… Comprehensive simulation methods for crossed helical gear sets with the main focus on the …” „… the calculation and simulation of crossed helical gears. SCHRAD2 covers the following basic …” „… manufacturing simulation. A modification of the tooth profile in the area of the tooth tip and tooth root is …”

A. Mihailidis, G. Korbetis, N. Drivakos, I. Nerantzis Finite element method based analysis of planetary gear systems considering backlash and manufacturing deviations S. 75-82

„… shown include stress distribution and deformation, as well as load sharing under quasi-static …” „… distribution. Therefore, simulations aiming at the prediction of the actual loading of real, non-ideal …” „… applied to the sun gear was 15 Nm, which results in approximately 125 N/mm2 contact stress. Figure 7 …”

S. Jain, B. James A simulation approach to calculate gear dynamic-factors for high-speed applications S. 649-658

„… A simulation approach to calculate gear dynamic-factors for high-speed applications Sharad …” „… life is to multiply the static stress by a dynamic factor. Standards-based calculations of gear dynamic …” „… dynamic factors accurately. In this paper, we propose a simulation approach to calculate the dynamic …”

T. Saito, K. Miyamoto Traction drive analysis identified with rheological friction property of traction fluid S. 1185-1190

„… stress occurs in the oil film at this time.[3] The glass transition point varies according to the …” „… pressure and temperature VDI-Berichte Nr. 2294, 2017 1185 conditions, and the shear stress increases …” „… quantitative grasp of how this shear stress occurs [4], and equations for estimating the oil film behavior …”

J. J. Liou, S. Rakuff The development of worm drives S. 503-516

„… , Simulation of Meshing, and Contact Stresses for an Improved Worm Gear Drive. Mechanism and Machine Theory …” „… fluctuating stresses and the number of stress cycles is fairly high. Therefore, the surface endurance …” „… ductile and tough to ensure maximum energy absorption. The magnitude of contact stresses on the wormgear …”

T. Schöler, H. Binz, M. Bachmann Method for the pre-dimensioning of beveloid gears – Efficient design of main gearing data S. 565-578

„… demonstrated in [2] that this procedure is also feasible for intersecting axes. He assumed comparable stresses …” „… ]. Other previous studies focused on the calculation both of stresses on the tooth root [4] and the load …” „… root stresses decisive in dimensioning. The approach presented uses the formulae of ISO 6336 [10] and …”

S. T. Ping, Y. M. Shao, L. M. Wang, H. W. Li, J. Xu, Y. Cheng, J. Liu The influence of mesh misalignment on planetary gear set with time-varying mesh stiffness S. 219-230

„… Influence of manufacturing errors on the planetary gear stresses and planet load sharing [5]. Hotait …” „… experimentally and theoretically investigated the impact of misalignments on root stresses of hypoid gear sets …” „… simulations are conducted to investigate characteristics of mesh misalignment of the first planet on planetary …”

H. Schreiber, T. Röthlingshöfer Kinematic classification of a gearbox comprising separate thrusted teeth and its advantages regarding existing approaches S. 267-280

„… therefore an area contact had been formed, Fig. 2.1-3. Due to the low resulting stresses and the good …” „… . 2.1-2: FE-Simulation for the load distribution under maximum acceleration torque © WITTENSTEIN …” „… carefully in order to maintain lubrication within the tooth guidance as well as low contact stresses. Fig …”

R. Saito, Y. Suzuki, K. Matsuo The effect on tooth root breakage strength of tooth root shapes resulting from differing hobbing conditions S. 733-740

„… different hobbing process conditions. This paper presents a simulation method for clarifying the effect of …” „… stress. Among them, it has been shown that the influence of the tooth root shape on strength includes the …” „… this study, a tooth root shape simulation was conducted as the first step in analyzing the effects of …”

A. Şorea, F. Buus Bendixen Reluctance magnetic gear – Magnetic gears, no longer toothless S. 615-622

„… for the high speed drive (Ang1). Fig. 9: Simulation(left) vs Measurements(right) The …” „… and mechanical gears in terms of performance, reliability and features. Design, simulations and tests …” „… eventually leads to fatigue stresses. The other problem with this construction is that heat generated in the …”

P. Tenberge, D. Kupka, T. Panéro Influential criteria on the optimization of a gearbox, with application to an automatic transmission S. 253-266

„… of influence on the simulation results. In the example of an automatic transmission, when …” „… its current state. Thanks to the basic formula of the torsional stress, we can then get a …” „… torque difference of 23%, the torsional stress formula gives us an equivalent mean diameter difference …”

C. Brecher, C. Löpenhaus, M. Schroers, T. Frech, P. Scholzen Optimization of NVH behavior of gears by alternative gear materials S. 539-552

„… and used for the simulation of the excitation behavior. In addition, the gear mesh excitation of one …” „… and used for the design of the gear micro geometry in the first step. For the simulation of cold …” „… calculated and used for the simulation of the excitation behavior in the tooth contact. The second step is …”

D. Talbot, A. Kahraman Simulation of gear wear using a dynamic load distribution model S. 5-16

„… Simulation of gear wear using a dynamic load distribution model Prof. David Talbot, Prof …” „… contact stress. Likewise, the impact of dynamic loading at or away from system resonances on surface …” „… Nm pinion torque. All wear simulations are performed with a representative automatic transmission …”

B. Leupold, V. Janzen, G. Kotthoff, D. Eichholz Validation approach of PM gears for eDrive applications S. 119-130

„… recent years, a strong move from basic research on process simulation [5] - [7] and performance data …” „… . 2294, 2017120 Fig. 2: Design approach and state of the art simulation for rolled gears As …” „… 85 HP (Fe-0,85Mo)+ 0.25%C with a tooth root bending stress of 1153 MPa (50% failure probability) is …”

M. Schwenk, J. Hoffmeister, J. Hermes Prediction of local load carrying capacity for gears – a materials science approach S. 989-1002

„… capacity, namely the hardness and residual stresses are either considered rudimentarily by analytical …” „… both the carburizing and quenching simulation allow very good predictions which have been validated up …” „… ). Fig. 3: Geometric approximation of gearing for carburizing simulation VDI-Berichte Nr. 2294, 2017992 …”

S. Stoyanov, V. Dobrev, A. Dobreva Investigating dynamic behavior of planetary gear trains through the systematic approach S. 197-208

„… simulation with great deformations and nonlinear behavior of material including inertia effects as results …” „… mentioned and besides, it provides the deflections and internal stresses within the details of the assembly …” „… dynamic behavior of planetary gear trains) and the analysis of the simulation research implemented are …”

M. Kanters, B. van Wissen, R. Nickel Relevant tribological testing method for high performance plastic gears S. 1507-1518

„… GF30 of the gear (a) and the D2D sample (b). Simulation methods For gear design FEM and …” „… fact that the analytical values are based on linear elasticity while the simulations are done with an …” „… (6) and (7), albeit using the contact width obtained from the simulations (in Figure 7b). These …”

J. Lohmiller, J. Hoffmeister, J. Hermes, M. Ansorg, H. Dhonau Development and investigation of austempered ductile iron (ADI) for thick-walled gear components S. 963-976

„… . The samples had a gauge section with a length of 20 mm and a diameter of 10 mm. The stress …” „… ]. Tension-compression fatigue tests with a stress ratio R = -1 were performed on a MAG 150 kN electromagnetic testing …” „… . Maximilian Schwenk for the cooling curve simulations by FDM and Carlos Ries for painstaking analysis of reams …”

M. Daffner, M. Otto, K. Stahl Elastic deformation of a hypoid gearbox – Measurements on a static test rig to validate the calculated elastic deformation behavior S. 683-694

„… Forschungsvereinigung Antriebstechnik e.V. and the working groups „AK Berechnung und Simulation“ and „AG RIKOR“ for the …” „… Flank Modification on Hypoid Gear Stress Distribution and Contact Fatigue Life. Geartechnology (2009 …”

N. Sagraloff, M. Hein, T. Tobie, K. Stahl Practical use of micropitting test results according to FVA 54/7 for calculation of micropitting load capacity acc. to ISO/TR 15144-1 S. 143-152

„… , modifications), material specifications (heat treatment, residual stresses, residual austenite), surface …” „… operating conditions and running time were developed by Schrade [17] and Lohmann [12]. The simulation …” „… . 2294, 2017148 based on a numerical simulation of pressure, temperature and lubricant film thickness …”

T. Jurkschat, T. Lohner, K. Stahl Improved calculation method for load-dependent gear losses S. 893-904

„… . Different investigations of the shear stress and shear rate in the fluid film have been conducted, e.g. by …” „… ). [19] Ziegltrum, A.; Lohner T.; Stahl K.: TEHL simulation on the influence of lubricants on …”

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Kunststoffe im Automobilbau 2017

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 4347 2017

Results in this title

M. Bakkal, O. Otuz, S. Doğru A new analytical calculation method for the injectionmolding process of a composite luggage rack holder S. 295-314

„… anisotropic simulations and visualizations. Relatively different stresses occur under both von-Mises and max …” „… , Moldflow simulations and analyses are carried out, with the results of analysis including fiber …” „… isotropic and anisotropic analyses can be applied and results obtained for stress and displacement. However …”

M. Franzen, G. Oberhofer, R. Schwarzer Improved crash simulation of endless-fiber-reinforced thermoplastics – organic sheets S. 113-124

„… Improved crash simulation of endless-fiber-reinforced thermoplastics – organic sheets Dipl.-Ing …” „… stiff and brittle endless fibers. Within the current crash simulation codes no suitable material …” „… Kirchhoff Automotive Deutschland GmbH have developed a material model for crash simulations in order to be …”

E. Spini, A. Bernasconi A demonstrator for the experimental assessment of the through-process modeling of injection-molded parts made of short-fiber-reinforced polymers S. 181-192

„… high stress. Novel nylon solutions have been introduced in keeping with the evolution towards smaller …” „… the results of the injection process simulation. More specifically, the effect of the fiber …” „… . These improved characteristics are summarized in the graphs in Fig. 1. Fig. 1: Stress …”

W. Schijve, G. Francato, R. Yaldiz True confidence in thermoplastic composite simulations for any automotive component S. 315-328

„… True confidence in thermoplastic composite simulations for any automotive component W. Schijve …” „… different composite failure modes. The main purpose is to have sufficient process and simulation validation …” „… injection-overmolding material. Current simulations now show good agreement with test results and as such give …”

A. Liebsch, R. Kupfer, M. Gude, P. Müller, N. Andricevic Hohlprofile, Organobleche und LFT-Knoten – Hybridbauteile aus Faserkunststoffverbunden für die automobile Serienproduktion S. 215-226

„… integrative Prozess-Struktur-Simulation gemäß Bild 4 an. Dabei werden die während des Spritzgießprozesses auf …” „… Auswertepfades A- B (b) Die Modellierung des Fluidkerns erfolgte mit der zur Simulation des Strukturverhaltens …” „… , Technologieprojekt FuPro. http://plattform-forel.de/fupro/, 09.12.2016. [9] Autodesk, Autodesk simulation moldflow …”

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Plastics in Automotive Engineering 2017

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 4348 2017

Results in this title

M. Bakkal, O. Otuz, S. Doğru A new analytical calculation method for the injectionmolding process of a composite luggage rack holder S. 279-298

M. Franzen, G. Oberhofer, R. Schwarzer Improved crash simulation of endless-fiber-reinforced thermoplastics – organic sheets S. 109-120

E. Spini, A. Bernasconi A demonstrator for the experimental assessment of the through-process modeling of injection-molded parts made of short-fiber-reinforced polymers S. 179-190

A. Liebsch, R. Kupfer, M. Gude, P. Müller, N. Andricevic Hollow profiles, organo-sheets and LFRT node structures: hybrid components made of fiber-reinforced plastics for automotive serial production S. 215-226

„… stress on the hollow profiles. To prevent collapse of the hollow profiles during the filling and …” „… . The present contribution presents an integrative process-structure simulation methodology for the …” „… reinforced as appropriate for stress transmission, and this in turn makes further weight savings possible …”

W. Schijve, G. Francato, R. Yaldiz True confidence in thermoplastic composite simulations for any automotive component S. 299-312

M. Steinbach, J. Maier Methodological further development of weight reduction in vehicle interior trim parts – Current and future opportunities from an automaker's perspective S. 21-34

„… in a simulation-based examination of the injection-molding process. - Weight reduction via a lower …” „… new construction and simulation methods but also by the use of new technologies and materials. In …” „… been made to achieve considerable increases in possible savings by applying new design and simulation …”

D. Häffelin Innovative processing of thermoplastic composites for the Porsche Panamera brake pedal – Continuous-fiber technology for safety components in the vehicle S. 121-134

„… continuous-fiber reinforcement Once the initial design is available and computer-aided isotropic stress …” „… -field modeling has been completed, areas of higher stress can be identified and the level and direction of …” „… stress assigned. Component areas with high stress in predominantly the same direction mark the …”

P. Hörmann, K. Bornemann, F. Flueggen, H. Herten, V. Hohm, T. Ströhlein Lightweight design at Volkswagen S. 203-214

„… stress/strain curves, the corresponding input data for numerical simulation were generated in collaboration …” „… validated among other things numerically by vehicle crash simulation, experimentally by dynamic component …” „… simulation software in question. The material tests required were carried out separately for glass- and …”

J. Götzelmann Bumper in thin-wall technology: an update regarding materials, processes, and technology innovations S. 75-90

„… area welded on over a large area. Simulation of rheological processes showed in addition that with the …” „… simulation wall thickness 2.0 mm (red) as compared with the original wall thickness of 2.8 mm (green) 78 …” „… weight saving and according to the results of rheological simulation just acceptable for series …”

J. Reddemann, H. Seifert Energy-efficient production of thermoplastic CFRP parts by one-step direct processing S. 135-144

„… be arranged appropriately for the stresses they experience, which means a marked increase in design …” „… distribution of the different plies was mapped using a simulation model in ABAQUS® . Table 1 shows a …” „… different temperature areas. The simulation model which was developed already shows a very good agreement …”

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Bauingenieur

Browse Volumes: Bauingenieur

Bauingenieur Volume 93 (2018) Issue 04 ISSN Online: 0005-6650

Results in this title

M. Garifullin, B. Launert, M. Heinisuo, H. Pasternak, K. Mela, S. Pajunen Effect of welding residual stresses on local behavior of rectangular hollow section joints/Einfluss der Schweißeigenspannungen auf die Tragfähigkeit von Rechteck-Hohlprofil-KnotenTeil 1: Entwicklung eines numerischen Modells S. 152-159

„… stresses by means of an upstream thermomechanical simulation of the welding process. It is proven that …” „… stresses by means of an upstream thermomechanical simulation of the welding process. It is proven that …” „… .: Simulation-based numerical optimization of arc welding process for reduced distortion in welded structures. In …”

U. Häußler-Combe Ein Vergleich aktueller numerischer Rechenverfahren am Beispiel von Scheibentragwerken mit Rissen/Current numerical methods in comparison with the example of cracked plates S. 131-140

„… Beispiel mit SDA Fig. 14. Principal stresses of example with SDA Hauptaufsatz 139 BauingenieurBand 93 …” „… Anpassung der Knotengeometrie an die Risskontur erfolgen muss. Generell ist die Simulation einer …” „… extended/generalized finite element methods for material modeling. In: Modelling and Simulation in Materials Science …”

D. Kueres, P. Schmidt, S. Bosbach, M. Classen, M. Herbrand, J. Hegger Numerische Untersuchungen zur Durchstanztragfähigkeit von Flachdeckensystemen/Numerical investigations on punching shear capacity of continuous flat slabs S. 141-151

„… nicht-linearen Finite- Elemente-Simulationen genauer untersucht. Das verwendete numerische Modell wird zunächst …” „… Finite-Element-Simulations. The applied numerical model is validated based on results of punching tests. Subsequently, the …” „… Finite-Elemente-Simulationen eine kostengünstige Alternative zur Untersuchung des Durchstanztragverhaltens von …”

doi.org/10.37544/0005-6650-2018-04

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A partitioned solution approach for fluid-structure interaction problems in the arterial system

Lars Radtke

Series: Mechanik/Bruchmechanik

Volume 353 2020

Results in this title

Applications S. 220-252

„… Figure 6.3: Maximum and mean wall shear stress for the decoupled simulations with a rigid wall assumption …” „… assumed that, with regard to the quality, the simulations reflect the true differences in the stress …” „… Figure 6.7: Oscillating shear index and maximum wall shear stress for the coupled simulations with …”

Mechanical modeling of the arterial system S. 23-68

„… cardiovascular FSI simulations. subproblem state variables field solver task fluid pressure p, velocity v, domain …” „… stresses within the (hyperelastic) body are uniquely defined by its displacement. 1D vessel pressure p1D …” „… simulation approach for cardiovascular FSI are introduced in this chapter. In the next chapter, numerical …”

Numerical investigations S. 153-219

„… . The starting point of the simulation is taken to be the opened state. This stress free configuration …” „… 5.7: Stress states during the simulation of the prestressed reference case. 5. From load step 100 to …” „… . Further, benchmark problems are solved in order to validate the simulation approach. In the last section …”

Bibliography S. 269-288

„… , and R. Scrofani. “Fast simulations of patient-specific haemodynamics of coronary artery bypass grafts …” „… stresses”. In: Journal of Biomechanics 31.3 (1997), pp. 229–237. [16] K. J. Bathe. Finite Element …” „… . Truskey. “Hemodynamics simulation and identification of susceptible sites of atherosclerotic lesion …”

Summary and Outlook S. 253-256

„… arterial system, several modeling and simulation methods were developed and investigated in detail in this …” „… work. They enable three-dimensional simulations of the fluid-structure interaction (FSI) in such …” „… of the vessel geometry and material on hemodynamic quantities such as the wall shear stress. Reduced …”

Fluid-structure interaction in the arterial system S. 6-22

„… based on macroscopic experiments. Given suitable constitutive equations, a three-dimensional simulation …” „… this information, hemodynamic quantities like the wall shear stress, which are known to play an …” „… effectively used in a computer simulation. Detailed information about the cardiovascular system can be found …”

Titelei/Inhaltsverzeichnis S. I-X

„… interpolation and temporal extrapolation of coupling quantities. In the developed modeling and simulation …” „… hemodynamic quantities such as the wall shear stress promote the progression cardiovascular disease …” „… . Cardiovascular FSI simulations, that can predict these quantities, are therefore of great interest and can aid …”

Appendix S. 257-268

„… elasticity tensor Recalling the second Piola-Kirchhoff stress as given in (3.103), it can be rewritten as S …” „… section of a typical implementation of a CMP in an FSI simulation using the C++ framework comana. // end …”

Numerical methods S. 69-152

„… boundary conditions are needed in order to use the methods in a coupled cardiovascular FSI simulation …” „… Second Piola-Kirchhoff stress, respectively. Voigt representations of δE and other strain-like quantities …” „… are obtained according to (4.14) and stress-like quantities are transformed according to (4.15) in …”

doi.org/10.51202/9783186353184

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Bauingenieur

Browse Volumes: Bauingenieur

Bauingenieur Volume 95 (2020) Issue 10 ISSN Online: 0005-6650

Results in this title

Jiwu Dong, Zheng Li, Hartmut Pasternak, Yvonne Ciupack Reinforcement of Fatigue Damaged Steel Structures Using CFRP Lamellas – Part 3: Numerical Simulation/Verstärkung von ermüdungsbeanspruchten Stahlbauteilen mit aufgeklebten CFK- Lamellen – Teil 3: Numerische Simulation S. 362-368

„… Steel Structures Using CFRP Lamellas – Part 3: Numerical Simulation J. Dong, Z. Li, H. Pasternak, Y …” „… increased remaining service life. In order to understand the tests, numerical simulations with Abaqus based …” „… on XFEM were carried out in this paper. The simulations show (like the previous tests), in …”

doi.org/10.37544/0005-6650-2020-10

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Bauingenieur

Browse Volumes: Bauingenieur

Bauingenieur Volume 94 (2019) Issue 12 ISSN Online: 0005-6650

Results in this title

Mehran Motevalli, Jörg Uhlemann, Natalie Stranghöner, Daniel Balzani A new nonlinear polyconvex orthotropic material model for the robust simulation of technical fabrics in civil engineering applications at large strains – Validation with large-scale experiment/Ein neues polykonvexes orthotropes Materialmodell zur robusten Simulation von Textilmembranen im Bauingenieur- wesen unter Berücksichtigung großer Deformationen – Validierung anhand eines Großbauteilversuchs S. 488-497

„… orthotropic material model for the robust simulation of technical fabrics in civil engineering …” „… simulation of tensile membrane structures. The notion of anisotropic metric tensors is employed in the …” „… warp and fill yarns. The model is adjusted to the stress-strain paths of uni- and biaxial tensile …”

doi.org/10.37544/0005-6650-2019-12

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Plastics in Automotive Engineering 2016

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 4343 2016

Results in this title

E. Glas, L. Greve, O. Steiln, J. Čopík, R. Flögel Simulation of plastics in crash conditions at Volkswagen – Requirements relating to safety-relevant plastic components S. 119-130

„… Simulation of plastics in crash conditions at Volkswagen Requirements relating to …” „… (M.Sc.), Dipl.-Phys. R. Flögel, Volkswagen AG, Wolfsburg Abstract Simulations have in recent years …” „… parts under dynamic loading is in some cases not yet adequately reproduced in simulation. This makes …”

J. M. Fiard, J. M. Cardona, P. Gauquie Mécaplast Plastic oil pan design for an optimized gasoline engine – Project management of novelty by failure mode analysis S. 181-192

„… ) and leakage. We explain the complementarity of the tests and the numerical simulations for the …” „… indicate when used tests and/or numerical simulations. We explain below the action plan required to check …” „… stresses. Fig. 5: Criteria for leakage Lack of product Silicone bead deposition depends mainly on a …”

H. Gawinski, E. Neitzel, D. Bauch Potential for weight reduction in commercial vehicles – Air springs with pistons made of glass-fiber- reinforced plastic S. 337-344

„… more realistic indication of stress in the component by transferring the results of mold flow analysis …” „… the internal pressure of the air springs. The stresses on the component resulting from the different …” „… : Examples of load cases for an air spring piston without buffering force support 4. Simulation and …”

E. Meurer, M. Hanigk Thermoplastic crash-absorbing elements made from PC/PBT (Makroblend®) as part of the sideprotection concept of the BMW i3 S. 225-238

„… enabled optimization of property data for the finite element simulation used to define the layout of the …” „… final part. The prototype tests were conducted at BMW’s laboratories whereas the simulations were …” „… vehicle was configured by crash simulations. An additional challenge was provided by the part design and …”

M. Kurz 3D simulation for lightweight construction in the plastics processing industry S. 17-28

„… 3D simulation for lightweight construction in the plastics processing industry Dipl.-Ing. M …” „… have a more reliable and more effective tool available in the form of 3D process simulation. With 3D …” „… simulation, aspects such as dry spots and racetracking can be modeled even in advance. 17 In the case of …”

I. Kleba, J. Emig Innovative PUR surfaces – self-healing and more S. 29-44

„… time-dependent physical effects occur in the region of the scratch. First of all, the stresses in the material …” „… deformed areas of material. These internal stresses are in the truest sense of the word the driving force …” „… behind the self-healing effect. Due to the frozen-in stresses the material surrounding a scratch starts …”

R. Krischke, R. Poltrock, S. Stein Development of a lightweight instrument-panel support structure Material and production concept of the instrument-panel support tube made of long-glass-fiberreinforced partly aromatic polyamide for th... S. 259-278

„… °C during solar simulation for a stationary vehicle (measuring points 88.1 and 102.0 lie directly in …” „… vehicle by means of solar simulation 261 2.2 Requirements Stiffness / corresponding …” „… using fiber-reinforced materials. Other requirements – such as good behavior under dynamic stress …”

A. van den Einden, P. van der Velden Study of lightweight applications in truck development – Metal replacement of a headlamp frame by a thermoplastic S. 315-322

„… requirements such as tensile modulus, strain at stress, chemical resistance to automotive fluids and …” „… from the mold-filling simulations with the mechanical optimization of the part. But since no details …” „… analysis but that the trend is the same. After the measurements a shaker test (road simulation …”

doi.org/10.51202/9783182443438

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Bauingenieur

Browse Volumes: Bauingenieur

Bauingenieur Volume 93 (2018) Issue 05 ISSN Online: 0005-6650

Results in this title

„… le • S im ul at io n Effect of welding residual stresses on local behavior of rectangular hollow …” „… , S. Pajunen Abstract Welding residual stresses that occur in tubular joints after the welding …” „… process affect their structural behavior. To ensure that these stresses do not negatively act on the …”

L. Baumgarten Dreiaxiale Mehrstufen-Druckversuche – Laborbefunde für einen Kreidesandstein und Ergebnisse numerischer Simulationsrechnungen/Triaxial multi-stage compression tests – laboratory findings for a cretaceous sandstone and results of numerical simulation computations S. 175-186

„… tests with various stress pathways. The results of the simulations are depicted, interpreted and …” „… . Compression tests and tension tests – simulations (PFC-Model) vs. laboratory experiments, stress …” „… characteristics of the stress path between the individual test stages. When testing with continuous states of …”

No title S. A 4

„… . Garifullin, B. Launert, M. Heinisuo, H. Pasternak, K. Mela, S. Pajunen Effect of welding residual stresses …” „… Mehrstufen-Druckversuche – Laborbefunde für einen Kreidesandstein und Ergebnisse numerischer Simulationsrechnungen 187 G …” „… Vermessung und Kalibrierung der Simulationsmodelle vorgenommen. Auf deren Basis lassen sich die Vorteile der …”

doi.org/10.37544/0005-6650-2018-05

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