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International Conference on Gears 2022

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2389 2022

Results in this title

R. Chen, D. Qin, C. Liu Study on electromechanical coupled dynamic characteristics of transmission system of wind turbine S. 763-778

„… . 6 shows the time and frequency domains of the high-speed dynamic meshing force with and without the …” „… greatly. And the frequency component of the high-speed dynamic meshing force was mainly include the gear …” „… system meshing frequency, just like the high-speed stage meshing frequency fm3, the medium-speed stage …”

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

„… resonance is typically associated with high frequency of gear engagement. Thus the higher order of resonance …” „… higher order frequency, criteria of traveling wave resonance equivalently expressed as: ? , k=0.5 …” „… ) and high frequency vibration (HFV) are partially listed in table.2.2. Table 2.1: experimental …”

A. Zhang, J. Wei, M. Cao, B. Peng Dynamic modeling and accuracy evaluation method for complex irregular components of aviation transmission S. 573-584

„… high-accuracy modeling because the approximate error of the model is small. As a comparison, a 5-node …” „… determined based on the system excitation, and the accuracy of the condensed model within the frequency band …” „… prerequisite for evaluating the condensed model. Here, the triple frequency of the maximum meshing frequency fm …”

S. Ebrahimi, J. Langhart, D. Marano NVH calculations for drivetrains, a methodology for selection of the best suitable calculation approach for a specific purpose S. 75-90

„… forces of both models in the time and frequency domains are calculated. For characterization of the …” „… frequencies coincide with any of the system eigenfrequencies [2]. Therefore, analysis of the high-frequency …” „… of the meshing stiffness of both gear pairs in the BOB model has higher values than that of the WOW …”

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

„… excitations (internal excitations), which typically result in high-frequency responses. Contrary to this …” „… model of a counter shaft gearset to analyze the frequency response characteristics as well as the …” „… and external excitations. A three-dimensional dynamic planetary load distribution model that …”

Y. Koch, G. Martin, E. Kirchner, D. Quirnheim Pais, R. Slatter Feasibility study of measuring instantaneous angular speed of helical gears with magnetoresistive sensors S. 253-264

„… boxes. The gear mesh frequency and higher orders of the modified gear are identifiable in the order …” „… very high degree: They are comparatively easy to integrate, can be added as an option and provide …” „… be offered as VDI-Berichte Nr. 2389, 2022 253a service. Pay-per-Use business models are now appearing …”

Y. Marchesse, M. Ruzek, F. Ville, P. Velex On windage power loss reduction achieved by flanges S. 665-676

„… high-speed gearing system the load-independent losses become prominent when peripheral speeds are above 100 …” „… radial and axial obstacles especially for high-speed configuration. In this work a set-up is built in …” „… rotating pinion. This aerodynamic effect is significant only if the peripheral velocity is high enough and …”

B. H. Kien, D. Iba, Y. Tsutsui, Y. Lei, D. Taga, N. Miura, T. Iizuka, A. Masuda, I. Moriwaki Plastic gear remaining useful life prediction using artificial neural network S. 951-956

„… decomposition method (FDM) in a sensitive frequency band (SFB) and labeled using a change-point detection …” „… plastic gear, vibration data are recorded and synchronized with capture images from a high-speed camera as …” „… : Captured images from the high-speed camera during a run-to-failure test VDI-Berichte Nr. 2389, 20229523.2 …”

T.-T. Mac, D. Iba, Y. Matsushita, S. Mukai, T. Inoue, A. Fukushima, N. Miura, T. Iizuka, A. Masuda, I. Moriwaki Application of genetic algorithms for parameters identification in a developing smart gear system S. 239-252

„… within the field of the high frequency magnetic flux of the spiral coil of the monitoring antenna …” „… these situations, hence, monitoring the health of these gears becomes a high potential solution …” „… and can give higher accurate results. The mean squared error of the two simulation and experimental …”

D. Sackmann, T. Husemann, B. Karpuschewski The effect of a multi-stage grinding process on the barkhausen noise signal S. 695-706

„… coefficient of determination indicates the accuracy of the regression model and is rated as high with a value …” „… usually followed by finish grinding in order to generate high-quality surface conditions. Possible damages …” „… applications, rough grinding is usually followed by finish grinding in order to generate high-quality surface …”

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

„… ’ 4.1 Generation of the matrix with the frequency of high – low torque If torque and/or speed have …” „… frequency of alternate bending cycles is 4 times higher on stage 2, and so on for the next stages. Fig. 9 …” „… drive system. The magnitude and frequency of these loads depend upon the driven machine, the motor, the …”

B. Guilbert, P. Velex Influence of thin rimmed/-webbed gears on transmission dynamic behaviour – Approximate dynamic factor formula S. 523-532

„… Element models, strain energies and quasi-static transmission errors. It is shown that, whenever solid …” „… gears are considered, the dynamic factor derived from the complete FE model results agrees well with …” „… model although the influence of rotating gear body cannot be accounted for. This good agreement also …”

A. Hessler, B. Neubauer NVH-performance versus Costs – Coherent R&D for gears, system and manufacturing S. 103-118

„… , 2022 103 Modulations of high frequency orders with low frequency rotational orders in the gearbox lead …” „… for e-vehicles in a very short time with high focus on costs, durability and especially low noise …” „… in Europe and China. Schaeffler is focusing on compact and low weight coaxial designs, higher …”

I. Hong, Z. Teaford, A. Kahraman A comparison of gear tooth bending fatigue lives from single tooth bending and rotating gear tests S. 45-74

„… mesh, producing cyclic stress states in the gear teeth roots where the frequency of loading is …” „… failure models or extensive experimental data, else revert to overly large factors of safety producing …” „… heavy and costly designs that may underperform. The current state of available predictive models for …”

D. Drummer, D. Schubert, C. Herzog In situ measurement of geometric and structural influences on the operating properties of polymer gears S. 1099-1116

„… deformation. To achieve a sufficiently high accuracy, the encoders’ signals are sampled at a frequency of 80 …” „… behaviour of plastic and metal pairings typically consists of a run-in stage, characterised by higher …” „… , be it pitting, cracking of teeth or flanks [10], or excessive wear [11]. With corresponding models of …”

T. Konig, M. Kley, F. Wagner, M. Liebschner Enhanced damage classification on transmissions by generating synthetic data with Generative Adversarial Networks (GAN) S. 227-238

„… classify different system states. 1. Introduction In industrial practice, high reliability and efficient …” „… condition indicators, both in the time and frequency domain, already allows conclusions to be drawn about …” „… transmissions is not possible with a parameter analysis. A frequency analysis is often used to identify damage …”

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

„… stage. High-frequency excitation of the gear mesh is a known challenge in the high-speed domain [13]. An …” „… High-Speed Gearboxes Friedrich Lagier, Arne Bischofberger, Katharina Bause, Sascha Ott, IPEK – Institute …” „… Abstract The use of high-speed drives up to 30,000 rpm makes it possible to increase the power den-sity of …”

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

„… engaging reverse and working face flanks occurs. In Fig. 7 (a), superimposed, higher-frequency vibrations …” „… elastohydrodynamic fluid friction at high speeds. The investigations show that the coefficient of friction behavior …” „… the level of the coefficient of friction [1]. Kleemola et al. developed a high-pressure twin-disc test …”

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

„… this paper, an improved temperature calculation model is proposed for a more ac-curate calculation of …” „… changes due to the high rigidity. From this result, it was con-cluded that the actual contact ratio plays …” „… teeth easily deform at a higher temperature. When the actual contact ratio was used in the Niemann’s …”

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

„… effects lead to higher efficiency, great reliability, and longer lifetime. Fig. 1: Load distribution in …” „… , universities and OEMs for many years, which can perform tribological tests with high accuracy and reliability …” „… configurations like 2-discs, pin-on-disc, FE8, 4-ball, MTM, SRV and other model tests. Efficiency improvement …”

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

„… experimentally on a back-to-back test rig. A high-frequency strain measurement at the planet pins was used to …” „… gearboxes are used for a wide range of high-performance applications in the automotive, aviation and marine …” „… range. Especially additional dynamic forces, due to operation in high-speed ranges or near resonance …”

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

„… considerations, load collectives can be derived on the basis of the model, which describe the frequency of the …” „… / mmModel Modelvc = 50 m/minvc = 250 m/minvc = 400 m/minvc = 150 m/min= 1 ms= 4 ms= 2 ms= 8 …” „… multiscale model, which allows an efficient determination of the thermomechanical load in gear hobbing. FEA …”

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

„… high-quality, autoclave-cured, woven carbon fiber-reinforced epoxy composite plate and tested in mesh with a …” „… million cycles of testing using a high-resolution, optical digital microscope. Five such test runs were …” „… studied employing a scanning electron microscope (SEM) and a high-resolution optical microscope. The final …”

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

„… resulted. After the main cut several trim FNFRn1n23D ModelCross SectionDecrease ofTurning SpeedTesting …” „… Fig. 3 right. The stroke (h = 0.3 mm), the frequency (f = 120 Hz) and the diameter of the tip (dtip …” „… a mostly constant friction coefficient with the highest turning speed possible in the test rig. The …”

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

„… fatigue strength. The lowest level that can be evaluated is the highest load level, where only test …” „… failures would have also failed at higher load horizons. Accordingly, this test points can be duplicated to …” „… lower or higher load levels (Fig. 4). The sample size is thus theoretically increased. Fig. 4: modified …”

doi.org/10.51202/9783181023891

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Drivetrain Solutions for Commercial Vehicles

VDI Wissensform GmbH (ed.)

Series: VDI-Berichte

Volume 2421 2023

Results in this title

T. Jonsson, S. Balaji, G. Sivaraman, V. Ravindran, J. Engström Effects of PWM on losses and comparison of calculation approaches S. 47-58

„… magnet losses increase due to the increased eddy currents induced by high-frequency time harmonic …” „… frequency’ contribution towards increased currents associated with frequency. Whereas, at higher modulation …” „… amplitude of a harmonic group, the higher is its influence on the losses. The higher the frequency of a …”

J. Hohn, M. Fister, C. Spieker, A. Lemmer Optimisation of an unsynchronized transmission for commercial vehicles up to 7 tonnes S. 161-174

„… first test vehicle, the model will focus exclusively on low-frequency vibrations caused by alternating …” „… natural frequency below 100 Hz are integrated into the model in terms of vibration. In the driveline …” „… detailed mechanical model of the shift unit is built and integrated into the overall model. At the higher …”

C. Schmidt Fault analysis of truck drivelines using big data methods S. 149-160

„… in place in order to generate a high level of benefit. Comprehensive, well-documented product …” „… frequency of errors. To continuously monitor the field population, shift line charts have proven to be …” „… training machine learning models in a targeted way and deriving suitable measures for fault correction …”

doi.org/10.51202/9783181024218

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Suppressing Electromagnetic Interference in Switching Converters by Chaotic Duty Modulation

Yuhong Song

Series: Informatik/ Kommunikation

Volume 850 2017

Results in this title

The Remaining Useful Life under Chaotic Modulation S. 72-82

„… output capacitor of the power device acts to filter the high-frequency noise, which suffers from the …” „… , but it works at a low frequency. Oppositely, both of MOSFET and IGBT can work at a high frequency …” „… power because of their high working frequency. Take MOSFET as the example to probe the equivalent …”

Introduction S. 1-13

„… been characterised by small size, high working frequency and high efficiency [4]. Because of applying …” „… loss and noise. Consequently, the higher the working frequency of transistors is, the heavier the …” „… disadvantages of chaotic frequency modulation, but also facilitate the operations of transistors and high …”

Conclusions S. 88-89

„… produce serious electromagnetic interference (EMI) because of high change rates of current and voltage by …” „… the switching converter by dispersing the energy into a wide frequency band and smoothing the peaks of …” „… the EMI spectrum. Chaotic frequency modulation is most commonly reported for EMI suppression in …”

Titelei/Inhaltsverzeichnis S. I-VIII

„… components, so that they have a switching action of high frequency, resulting in high change rates of voltage …” „… converter by dispersing the energy into a wide frequency band and smoothing the peaks of the EMI spectrum …” „… . Unlike the well-studied chaotic frequency modulation, the chaotic duty modulation is concerned in this …”

Realizing Chaotic Duty Modulation S. 44-56

„… , such as power switch, high-frequency transformer and rectifier diode. In Chapter 3, the chaotic duty …” „… conversion. The main circuit includes half-bridge power conversion and the high-frequency transformer, as …” „… demonstrated in the dash-dotted line box of Figure 5.2. The output of high-frequency transformer proceeds to …”

System Stability under Chaotic Duty Modulation S. 57-71

„… , such as conducting resistors of transistors and diodes, the equivalent circuit model is of high …” „… based on its kinetics models. As one of the kinetics models, the average model (AM) is categorized as …” „… the state space model (SSM) [51] and the circuit average model (CAM) [52]. Hong Li applied SSM to …”

References S. 90-100

„… , pages 469–472. IEEE, 1992. [56] A. K. Bhat and S. Dewan. Analysis and design of a high-frequency …” „… high-power applications. Industry Applications, IEEE Transactions on, 33(5):1220–1232, 1997. [12] D.-Y. Lee …” „… perturbation to control chaos in the Buck dc/dc converter with phase shift and frequency mismatch …”

Circuitry Design for Chaotic Modulation S. 14-22

„… converters generate serious electromagnetic interference (EMI) because of the high change rates of voltage …” „… wide frequency band due to the pseudo-randomness and the continuous spectrum characteristics of chaos …” „… suppressed by chaotic frequency modulation and chaotic duty modulation, followed by proposals how to …”

doi.org/10.51202/9783186850102

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International Conference on Gears 2017

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2294 2017

Results in this title

B. Guilbert, P. Cutuli, P. Velex Hybrid dynamic model of hollow thin-rimmed gears S. 623-634

„… high-frequency mesh components are also visible but their amplitudes are smaller. Fig. 5 …” „… on integral harmonics of the mesh frequency, other rays emerge including in particular that of high …” „… rad/s In the high-frequency range (mesh frequency and its harmonics), transmission error and load …”

A. Carbonelli, J.-Y. Guerder Computing and minimizing the whining noise – Application to a bogie gearbox S. 517-526

„… to a modal amplification which occurs in our model at a little bit higher frequency. Unfortunately …” „… gearbox (whining noise). This work presents an efficient method to model the whining noise. The two main …” „… especially when high torques are applied leading to high static deflection. This can be taken into account …”

J. Fechler, M. Böhm, S. Aberle, V. Merz A contribution to the NVH behavior of plastic gears in automotive applications S. 1531-1540

„… steel (0.1 – 0.4%) the values are 10 times higher Fig. 7: Results of the modal analysis (frequency …” „… frequency range. Slowly changing dimensional parameters over the lifetime of the tool can cause higher …” „… modulations in a high carrier frequency range. Any modulation intensity of a failure is recorded for further …”

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

„… factors for high-speed gears. We also investigate the influence of system resonances, model fidelity …” „… lumped-parameter model of a high-speed gearbox. The model includes shafts, bearings and helical gears …” „… peak-to-peak variation in static TE is higher for input mesh than output mesh. Since the dynamic model is …”

A. Kahraman, H. Ligata Effects of external splines on deformations of ring gears of planetary gear sets S. 341-352

„… ) high-pass filtered data (cut-off frequency = 2370 Hz). Fig. 8: Measured and predicted root strain at …” „… predictions of a commercial deformable-body model are also shown to describe the experiments accurately. 1 …” „… advantage is their high power density (ratio of power transmitted to the volume occupied), which can be …”

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

„… gear mesh interface to a single spring-damper system. Higher fidelity models also exist attempting …” „… approximately 1 12,500 rpm, or a mesh frequency of approximately 5200m nf f Hz. Higher harmonics …” „… slight increase in natural frequency due to the higher contact ratio of the helical gear pair. With …”

J. Champain, S. Dalle, M. Octrue Simultaneous experimental characterization of dynamic transmission error to noise and vibration behavior of a gear system under load S. 953-962

„… presence of 1st harmonic of the low speed shaft frequency, and z1/z2 harmonics, i.e. the high speed shaft …” „… enabling high sampling and clock frequency rates associated with advanced algorithm. A) Lw spectrum : Run …” „… collect a large database of synchronous measurements to be used in vibro-acoustics computation models …”

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

„… frequency of the input shaft is 30 Hz. 2.2. Calculation of Stress Intensity Factor The model of the …” „… Model-Based Analysis and Simulation,” J. Intell. Manuf., 23(2), pp. 239– 253. [7] Alemayehu, F. M., and …” „… estimation of gears. A six degree of freedom dynamic model of a single stage gearbox was developed. Torque …”

D. Strasser, S. Troll, R. Sperlich, J. Münch Reliability safeguarding for an 8 MW wind energy gearbox in serial production – Prototype and process development ensuring stable quality at the highest level S. 1085-1100

„… process development ensuring stable quality at the highest level Dr.-Ing. Dirk Strasser, Dipl.-Ing …” „… Abstract Gearboxes for a multi megawatt offshore application require highest reliability. The reliability …” „… million Eur. Thus, highest product reliability is required to safeguard the business certainty. 2 …”

E. Rigaud, P.-H. Cornuault, B. Bazin, E. Grandais-Menant Prediction of the vibroacoustic response of an electric window-lift gear motor S. 635-648

„… harmonics of the excitation spectra as well as a frequency enrichment generated by the coupling between the …” „… bearings. It is designed such as the mesh frequency fm is equal to the rotor frequency fr. It meshes with a …” „… spectral method used for computing the vibroacoustic response of the gear motor. The frequency content and …”

S. Grützner Holistic simulation of gearboxes – system simulation S. 51-60

„… frequency excitations. We assume a gear meshing efficiency of 95 %. Fig. 6: Model of a machine with …” „… Modelica® based model elements representing inertias, loads, stiffness or detailed tooth contacts (gear …” „… language Modelica® enables the modeler to extend existing library elements or create new library elements …”

G. Hlebanja, S. Kulovec, D. Zorko, J. Hlebanja, J. Duhovnik Influence of the tooth flank shape on thermal load of the gear S. 1583-1592

„… thermal load of cylindrical, plastic involute and S-gears. Whereas there are thermal (temperature) models …” „… at disposal for the involute gears, no models are available for the S-gears. Such a model should …” „… higher quality and reflected actual tooth flank geometry. Two types of experiments were conducted, first …”

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

„… efficiency, relative high transmission ratios. The frequency analysis is especially significant for the …” „… procedure provides high accuracy of the model discretization with a minimal number of elements. Therefore …” „… several advantages: shaft co-axiality, higher power density, large torque-to-weight ratio, increased …”

M. Nakagawa, D. Nishida, D. Sah, T. Hirogaki Development of novel test stand for three-axis driving planetary gear train control and analysis of novel PGT for noise reduction S. 331-340

„… speed. This causes high meshing frequency and an annoying noise. One of the solutions for noise …” „… the same axis using universal joints. This can reduce the meshing frequency to less than one-third …” „… for the same gear ratio. In other words, it can provide a much higher gear ratio for the same sound …”

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

„… to two root effects according to Mütze [3]. These effects are high frequency ground currents due to …” „… (right) Due to the high frequency nature of the parasitic currents, it was necessary to use probes and …” „… higher dynamics but also an increase in failures caused by induced parasitic currents. One of these …”

J. Neufond, Y. Xu, J. Perret-Liaudet, E. Rigaud The iterative spectral method for computing the planetary gear dynamic response S. 209-218

„… basis computed from the mean characteristics of the system, this method is derived in the frequency …” „… they provide compact power transmission design with high gear ratio. Indeed, these transmissions are …” „… stage planetary gear composed of 3 planets. The lumped dynamical multi-degree-of-freedom model used is …”

B. Schlecht, C. Ulrich, J. Bräunig Investigations on the influence of anisotropic material properties of gear teeth on their macroscopic behavior S. 659-668

„… method is the very high natural frequency of the free tooth oscillation (approx. 100 kHz) which has to be …” „… .]. Dependent on the form of the stiffness tensor, different material models such as isotropic elasticity with …” „… developed, providing a very high repeat accuracy to produce comparable results, see Fig. 5. Fig. 5 …”

E. Tanaka, H.-C. Lin Gear diagnostic system using zonal laser beam for practical use S. 845-856

„… data. In previous diagnostic system, the rotary encoder is precise and has higher sampling frequency …” „… is precise and has higher sampling frequency for detecting gear tooth during variable rotational …” „… AD board with 16bit processing and sampling frequency 5kHz for measuring. However, our proposed …”

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

„… . Additionally, alternative gear materials offer a high potential for an optimized NVH behavior due to the …” „… gear material leads to an increased flattening of the contact area under load as well as to a higher …” „… bending deflection of the teeth. The higher deformation of the teeth as well as the gear body influence …”

J. Papies Load distribution in planetary gears considering effects of manufacturing tolerances with a statistical approach S. 783-794

„… planet gears. The planetary gear stage is modelled as an equivalent mechanical model of a planetary gear …” „… approach 3. Modeling The transmission is abstracted as a static model in the plane transverse section …” „… immediately integrated in regression models which lead to respective regression equations. However, this …”

J. Langhart, I. Zotos, G. Franzoso Casing stiffness variations and influence on the gear meshing properties S. 1161-1168

„… bearing forces. VDI-Berichte Nr. 2294, 2017 1161 The FE model was calculated with ANSYS® [3]. As first …” „… under load in drive mode (left) and bolts and contact plane of casing in FE model (right) For each …” „… variation in the FE model, a new stiffness matrix is created and applied in KISSsys. The combinations of …”

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

„… coupled modeling approach, after [1] Kinematic of the problem Elastic Constitutive Model …” „… creep, surface finish, humidity, aging, selfheating and frequency can be considered with this approach …” „… is PMCs may lead to higher fatigue life even after crack initiation. Thus, the fatigue theories …”

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

„… for heavy industrial applications with low rotational frequency but very high output torque in …” „… high strength and moderate ductility. In this study, ADI was developed and optimized for industrial …” „… Planetary gear boxes are widely used in industrial applications due to their high power density. Especially …”

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

„… Ruhr-University Bochum and the Chinese transmission manufacturer Shengrui Ltd. 1. Presentation of the model …” „… The model is a 6AT gearbox concept with power variation on the input. Different load spectra are …” „… : Shafts definition s1 s2 s3 s4 s5 s6 s7 s8 FDII FDI PlanetI PlanetII PlanetIII Fig. 1: Model …”

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

„… , the need for developing systems with higher power density and the strong NVH (Noise Vibration …” „… increase the density primarily in the highest loaded volume of the gear teeth, while powder forging …” „… PM gears, Figure 1. VDI-Berichte Nr. 2294, 2017 119 Fig. 1: Process routings for high …”

C. Zhang, H. Liu, C. W. Yao, Y. Li Study of vibration for spur gears of tooth profile modification and experimental validation of modification method S. 527-538

„… modification method. 2. Nonlinear dynamic model Dynamic modeling of the gear system is shown in Fig.1 …” „… 6 degree of freedom (DOF) lateral-torsional coupled nonlinear dynamic model of one-stage gears …” „… system is established. Firstly, simulation analyses of dynamic model are performed for gears of …”

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

„… of generating gear grinding needs a high amount of time and effort and only a few published …” „… , it is necessary to check whether existing wear models can be applied to generating gear grinding …” „… . This report examines the transferability of existing models to generating gear grinding. Furthermore …”

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

„… Vinci (1452-1519). Significant breakthroughs achieved for high speed applications in the 20th century …” „… achieve high speed reduction in a relatively small footprint although with potentially limited …” „… load-carrying capacities and high wear rates. This paper provides a comprehensive compilation of …”

B. Černe, D. Zorko, J. Duhovnik Semi-analytical method for the prediction of the flank temperatures of polymer gears during running S. 1611-1624

„… Nm and a frequency of n=1392min-1, while a POM-POM combination was used for a torque load of M=0,4Nm …” „… and a frequency of n=1458min-1. VDI-Berichte Nr. 2294, 20171612 Fig. 1: Spur gear pair finite …” „… point quickly rises and achieves its highest values at the point of highest contact pressure and …”

C. Hasl, P. Oster, T. Tobie, K. Stahl Bending strength of oil-lubricated cylindrical plastic gears – Modified bending strength calculation based on VDI 2736 S. 1649-1660

„… gears enable significantly higher power transmission compared to dryrunning gears. One of the most …” „… relevant damage mechanisms herein is tooth root breakage. Due to the high elasticity of thermoplastics …” „… teeth on the increase in contact ratio under load, significantly higher actual contact ratios result …”

doi.org/10.51202/9783181022948

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International Conference on Gears 2023

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2422 2023

Results in this title

C. Dongu Im, W.-J. Chung, J.-H. Park, D.-J. Moon, Pfor. Y.-J. Park The effect of working surface deviation on transmission error in helical gears S. 1125-1134

„… high-order harmonics (2nd, 3rd) of gear meshing frequency in TE. For example, pitch and run-out errors have …” „… can lead to dominant high-order harmonics of gear meshing frequency. In this study, the high …” „… meshing frequency surpassed the fundamental meshing frequency. Conversely, in the model considering the …”

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

„… Frequency Testing for Rapid Generation of High and Very High Cycle Fatigue Data,” Materials, 14(9), p. 2245 …” „… fatigue. Engineers are expected to ensure that the gear can survive well into the very high cycle fatigue …” „… VHCF regime. This in turn creates a need for high-speed testing methodologies and an understanding of …”

J. Zheng, D. Qin, C. Liu A Novel Dynamic Modeling Method of High-Speed Thin-Rimmed Gear Transmission S. 1279-1286

„… dynamical model that can analyze the high-speed rotation of gears by combining the lumped-parametric model …” „… Model The structure of the high-speed thin-rimmed gear studied in this paper is shown in Fig. 1 …” „… A Novel Dynamic Modeling Method of High-Speed Thin-Rimmed Gear Transmission Ph.D student Jiayu …”

J. Langhart, S. Ebrahimi, T. Kelichhaus A comparison of time and frequency domain approaches for NVH S. 583-598

„… calculated bearing forces in KISSsoft based on the frequency approach. In this case the simulation model is …” „… neglectable, the differences become noticeable in the higher frequency range above 1000 Hz. 5.2 Gear contact …” „… ) and frequency domain [right] Fig. 10: Forced response model: Marker velocity in time (left) and …”

H. Jia, D. Qin, G. Hu, X. Xu, W. Bai Electromechanical Coupling Modeling and Torsional Vibration Analysis of Helicopter Electric Propulsion System S. 675-688

„… gear modelPlanetary gear modelMain rotor modelShaft modelShaft modelShaft modelPhase …” „… tracking of voltage waveform is achieved through Bang-Bang control. Inverter modelPMSM modelSpiral bevel …” „… frequency fluctuations, while the rotor speed under closedloop control mainly exhibits high frequency …”

B. van Wissen, L. Pastukhov, F. Mitsuzuka, K. Iwanaga, A. Hasanovic NVH performance of thermoplastic gears: modelling and measuring S. 1389-1402

„… reinforced gears. Fig. 11 Model predicted gear harmonics (left) compared to measured data in the frequency …” „… kinematic model. Initial calculations, with a high level of assumptions at the input already shows good …” „… meters and microphones mounted close to high-speed running gears. Via detailed data analysis, combined …”

M. Werner, S. Graf, M. Oehler, O. Koch Investigation of the electrical behavior of a spur gear stage pair by means of impedance measurements S. 67-80

„… high-frequency steep voltage edges of the control signal in combination with unfavorable electrical grounding …” „… model-based application on various machine elements. Nextlub - 1st In-ternational Conference on Tribology and …” „… of the use of fast-switching frequency converters with IGB (insulated-gate bipolar) or SiC (silicium …”

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

„… times higher than the other model when no gear meshing damping is considered. Fig. 2: Dynamic factor …” „… further analysis. As it was already demonstrated in the results of the model with steel gears, the highest …” „… speed of 5600 rpm To further clarify the performance of both models, the 𝑅𝑃 in time and frequency …”

P. Chavan, M. Lutz Validation of an industrial gearbox model for predicting vibro-acoustic behavior S. 619-632

„… incremental approach ensured a higher level of confidence in the simulation of the MBS model representing the …” „… reference data for comparison with the MBS model. Fig. 9 shows the comparison of the frequency content of …” „… led to higher vibration amplitudes in the simulation. The damping effect was simplified in the model …”

S.-J. Tsai, Q.-Y. Zhuang, L.-C. Chang Design and analysis of compound stepped planetary gear drives for better transmission performances S. 537-552

„… teeth. Especially, in four cases, namely A3, B1 and B2, the fundamental mesh frequency at high …” „… frequency are lower than those at the low-speed meshing frequency, and the amplitude of higher order tends …” „… without and with profile crowning modification were analyzed by a modified tooth contact analysis model …”

B. Abert, D. Werner The Influence of Wheel Body Design on Airborne Noise S. 357-366

„… housing, and on the right the housing with testbed mounting is shown. Fig. 1: Gear box modelTable 1: Gear …” „… stiffness of any wheel body geometry, using statically condensed stiffness matrices from an FE model and …” „… linking them to an analytical model of the tooth contact. This makes it possible to consider the wheel …”

A. Beinstingel, F. Haringer, W. Sigmund, M. Heider, B. Pinnekamp, S. Marburg Investigation of Sound and Vibration Behavior of Cylindrical Gears S. 599-618

„… to an excitation frequency of the gear mesh of about 170 Hz. At this frequency, the dynamic model …” „… gear teeth are considered with high precision. An up-to-date summary of different modeling techniques …” „… linear computation of the full housing structure in the frequency domain by considering them as external …”

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

„… new spectral compositions of noise emissions with a large number of high frequency components. But the …” „… human ear perceives especially the high frequency components of the spectrum as very disturbing. Gearbox …” „… identified as area with higher amplitudes. The main natural frequency (equals the torsional natural frequency …”

N. De Bie, W. Smet, T. Van Der Kamp Assessing gear mesh misalignment in a parallel gear set by transmission error measurements S. 291-300

„… described method mainly depends on the reliability of the applied simulation model and the accuracy of the …” „… , combined with a detailed simulation model, can support in diagnosing the occurring gear mesh misalignment …” „… model reports static TE since dynamic system behaviour of the supporting structure is excluded. In other …”

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

„… studied mode frequency responses Frequencies (Hz) Model a) (rigid pinion + FEM gear)Model b) (FEM pinion …” „… , are much higher than the dynamic ones but high-frequency cyclical loading may impact gear body fatigue …” „… models to simulate the static and dynamic behavior of high-speed thin-rimmed gears. J. Sound Vib. 438 …”

T. Inoue, D. Iba, N. Fujita, A. Nishikawa, M. Ishii, J. Hu, H. Shimasaki, N. Miura, A. Masuda, I. Moriwaki, J. Hongu Effect of Load Cycles on Return Loss and Resistance of Sensor and Antenna Circuits Printed on Plastic Gears S. 659-674

„… coaxial connector U.FL-R-SMT-1 is used as a connector for the high-frequency circuit. This connector is …” „… high-frequency side, but the shift to the low-frequency side is small, and the shift to the high-frequency side …” „… is large. Therefore, the resonance point at the high-frequency side is highly sensitive to changes in …”

M. Hausmann, E. Kirchner Investigation of the electrical impedance of the gear mesh of helical gears in an industrial gearbox S. 1173-1180

„… 2,700 and 2,950 . Here, the gear mesh frequency can also be seen. It can also be observed that the high …” „… film inside the bearing can be electrically modelled as capacitance. Using suitable models, the …” „… accompanied by increasing model complexity and potential VDI-Berichte Nr. 2422, 2023 1173disturbance …”

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

„… application of axial forming with frequency modulation as an incremental process, high contact stresses and …” „… helical gears generally possess specific disadvantages, e.g., high material waste, extremely high tool …” „… forming is generally carried out by the process of frequency modulation or recursive movement of the …”

S. Moschkau, S. Held Optimization of product quality and manufacturing processes in real-time with vibration analysis S. 1821-1828

„… teeth and to a particularly high surface quality. It is important to detect micro waviness on the gear …” „… flanks at an early stage to avoid high reworking costs. Real-time monitoring of the production process …” „… achieve a particularly high geometric accuracy of the gearing. However, practice shows that some …”

L. Binanzer, L. Merkle, M. Dazer, A. Nicola Pitting Detection for Prognostics and Health Management in Gearbox Applications S. 97-108

„… offers a valid basis for developing an empiric model that relates the damage size to the observed sen-sor …” „… failures are caused by gear pitting. Each failure can be associated with high repair costs and …” „… that time, so they can with-stand a higher load. Thus, the other teeth on the circumference compensate …”

G. Devaraj Vibration reduction of planetary gear drive using mesh phasing: modelling and experimental validation S. 157-174

„… have a higher level of confidence that the numerical model exhibits the same dynamic behavior as …” „… , thereby improving its NVH performance. A system-level multibody dynamic model of the planetary gear set is …” „… of the system is predicted using finite element models, and then operational experimental bench tests …”

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

„… model with a critical plane mode (I) approach for both dry and oil lubricated polymer gears …” „… , especially at the practical level where the data for predictive models are generated, i.e. testing. If the …” „… varies a lot, since typically the data are not obtained under gear meshing conditions, but model …”

H. Mahe Model based NVH design: e-bike application S. 1229-1238

„… . 2-1-ModelAs there are many gears, every free-play between gears is a potential source. A ranking of …” „… Model based NVH design: e-bike application Dr. Ing. Hervé Mahe, Valeo PTS, Amiens, FranceAbstract …” „… with the gearbox torque. To help the diagnosis and understanding, a complete model of the power-train …”

M. Vivet, A. Rezayat, J. Verhoogen, K. Kucukcoskun, S. Donders Numerical analysis of bevel gear transmission acoustic emission using a 3D gear contact force model within a multibody system dynamics simulation environment S. 689-702

„… web, holes, etc.), captured by the FE model.Fig. 2: Flexible multibody model with various flexible …” „… Numerical analysis of bevel gear transmission acoustic emission using a 3D gear contact force model …” „… model in the time domain, are used as input for vibro-acoustic simulations to determine the drivetrain’s …”

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

„… reinforced materials are used for gears that are used under high load conditions (e.g. gear for electric …” „… analysis model and calculate the stress at the tooth root using torque as an input condition.2. Fatigue …” „… Company: Kuraray JIS K7118 cyclic fatigue test Test Parameters Waveform Shape sine Frequency 10 Hz Type of …”

A. Baseer, B. Bauer, C. Wang Mesh Load Factor in Multiple Planetary Stage Gearboxes S. 281-290

„… ripples with quite high frequency are visible, which are the result of the tooth meshing itself. Beside …” „… modelling approach and validation [2] In a further step the validated gearbox model is implemented into the …” „… planets, the higher values for K are expected. The analytical calculation approach of Kof a single …”

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

„… . Resorting to a gear mesh stiffness developed by the authors, an implemented gear-shaft-bearing dynamic model …” „… pressure is fixed for all gears. Second, the gear mesh stiffness is investigated with the model developed …” „… by the authors in [10]. As for the dynamic behavior, the employed model comprises Timoshenko beam …”

F. Eigner, S. Oberle, M. Berger A non-restrictive approach of gear geometry calculation for plastic gears S. 1469-1482

„… : Parameters for kinematic calculation model Furthermore, the direction of this sliding velocity must be …” „… gearing for translational-rotational motion transformation. Filtering the surface model An especially …” „… . The result of these five steps is a surface model of one tooth of the gear. There is a continuous …”

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

„… model show intensive growth at higher input torque values. This drastic increase cannot be fully …” „… tilting. Fig. 1: Representation of the modeling of the wheel and pinion for the analytical model. The FE …” „… of Munich (TUM), Garching, GermanyAbstract Plastic gears are produced cost-effectively in high …”

M. Ruzek, R. Brun, F. Ville, P. Velex, Y. Marchesse On the reduction of windage power losses in gears by the modification of tooth geometry S. 785-800

„… windage power losses (WPL) in high speed transmissions can be mitigated by flanges and/or shrouds close to …” „… losses can become substantial for high-speed gears. Among these losses, the so-called windage power …” „… , as is the case in high-speed turbomachinery, aerospace or pump transmissions. From the onset of …”

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

„… understood to be a growth market. Robotic mechanical drivetrains often require a very high ratio to step down …” „… commonly used in the robotics industry for high ratios are Cycloidal and Strain Wave Gearing drives. The …” „… solutions than full general purpose Finite Element or Multi-Body Dynamics solutions. A model is presented …”

A. Donmez, A. Kahraman Experimental Investigation of Influence of Indexing Errors on Gear Rattling S. 703-714

„… using gears of a high-quality class. Gears used in automotive transmissions are subjected to varying …” „… broad frequency range lining up with two impact events at 1 / 2 0.75 and 1.75. The same test with 10mT …” „… severity of the rattling noise is likely to be higher in the presence of such errors. Further, random …”

C. Westphal, J. Brimmers, C. Brecher Influence of Axis Misalignments in Stepped Planetary Gear Stages on the Excitation Behavior – Test Rig Development and Simulative Analysis S. 175-190

„… components are modeled in a high level of detail so that all influences relevant to the VDI-Berichte Nr. 2422 …” „… combination of high power density, high efficiency and low noise emission. With the electrification of the …” „… module GEARFORCE6D. The axis misalignment is varied in the simulation model and the influence on the …”

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

„… high-frequency tensile loads. Additionally, Felipe-Sese et al. [24] conducted comprehensive analyses of …” „… , Thermo-mechanical modeling of polymer spur gears with experimental validation using high-speed infrared thermography …” „… tests using a high-speed camera with microscopy optics B. erne, N. Vukašinovi , D. Zorko, Faculty of …”

Titelei/Inhaltsverzeichnis S. I-XXVIII

„… Dynamic Modeling Method of High-Speed Thin-Rimmed Gear Transmission 1279J. Zheng, D. Qin, C. Liu, State …” „… DRIVESYSTEMS GroupInternational Conference on Gears 20235th International Conference on High Performance …” „… life prediction model – an influence quantity analysis 109J. Lövenich, M. Zalfen, D. Mevissen, J …”

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

„… Abstract Planetary gear sets combine the characteristics of high-power density and compact design which are …” „… beneficial for a wide range of high-performance applications. Embedded in the efforts for resource efficiency …” „… high-power density, coaxial central shaft alignment and high gear ratios, promote their wide usage in diverse …”

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

„… ) technologies experience a strong increase in popularity and use. While AM offers a high level of design freedom …” „… powder bed fusion of metals (LB-PBF/M, a.k.a. SLM, PBF-LM, LPBF, DMLM) have reached a high level of …” „… dental crowns, due to small form factors and high part value.Cost-effective production of lower value …”

J. Lohmiller, F. Dobler, M. Wöppermann Investigating different nodular graphite irons for the application of gears – a step towards standardization by using reasonable quality criteria S. 1731-1748

„… iron almost reaches the tooth-root strength of ADI or even higher. The study provides insight into the …” „… volume. It was found that a fine and nodular graphite structure is the key to high fatigue strength for …” „… : shot-peened VDI-Berichte Nr. 2422, 20231734Fig. 1: CAD model of a planetary carrier of size 22. The test …”

J. Cathelin Plastic Gears: Investigation on Noise and NVH Behavior S. 1449-1460

„… used to judge the impact of a gear train on the noise behavior. A high Transmission error results in a …” „… higher noise, whereas a low transmission error result in a smoother meshing. The transmission error …” „… error amplitude are the gear design and quality classification. A higher geometrical quality will lead …”

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Humanschwingungen 2016

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2277 2016

Results in this title

J. Vandenbroeck, M. Brennan Influence of polymer viscoelasticity on vibration isolation of polyurethane flexible foams in automotive seating S. 55-68

„… vibrations. Foams with higher elasticity, in the frequency range of interest, will have smaller initial …” „… techniques are used to determine the viscoelastic behaviour of the polymer. These are combined with higher …” „… level material models describing the micro- and macro-structure of a foam, and they provide insights on …”

F. Koch Zur Risikoabschätzung für Knochen- und Gelenkserkrankungen bei Arbeiten mit Motorkettensägen S. 169-178

„… occupational disease (BK) No. 2103, as no significant exposure to low-frequency oscillations is said to be …” „… the therewith implemented risk assessment show that also at chain saws sufficiently high …” „… Fassung CEN/TR 5350:2013. Beuth Verlag, Berlin [17] Brammer AJ, Pitts PM; Frequency weighting for …”

K. Kracht, M. Büscher Schwingungen beim Fahrradfahren und der Einfluss auf den menschlichen Körper Fahrradfahren ist gesund – Stimmt’s? S. 199-444

„… 's helmet, and subsequently eliminated. In all studies, higher exposures were seen to occur on the forward …” „… handle (side handle) of the chainsaw. The average exposure was also higher for spruce than for beech …” „… damper characteristics are determined by simulation. Then, the simulation model is extended by the …”

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International Conference on Gears 2019

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2355 2019

Results in this title

X. Yang, N. Yue, Q. Yang, L. Wang, Y. Shao, H. Xiong Dynamic simulation for double input compound power-split mechanism of in-wheel motor driven EVs S. 481-492

„… of DICPSM: (a) Lever model; (b) 4-node Lever model; (c) Low gear rotating speed analysis; (d) High …” „… periodicity in range 0~1.85×105 N and 0~1.94×105 N, and the frequency of low ones is 1.8 times of high ones …” „… . The rotating frequency of high gear and low gear are shown in Fig. 5 (d), VDI-Berichte Nr. 2355 …”

B. Guilbert, P. Velex, P. Cutuli Hybrid models for the study of gear body dynamic deflections – Gear body modes S. 823-834

„… derived from (4) with the largest deviation observed for the highest frequency mode (13 456 Hz). This …” „… Hybrid models for the study of gear body dynamic deflections – Gear body modes Ph.D. Berengere …” „… body deflections in dynamic conditions. To this end, an original hybrid gear model is introduced …”

L. Stocco Complementary strengths of orbitless & planetary drives S. 1485-1496

„… cancellation of opposing sun and ring forces, with a high-frequency and DC component remaining. Orbitless …” „… (mellower tone), and minimal high-frequency gear whine. 4. Prototype Multi-Stage Orbitless / Planetary …” „… primary stage. A SimulationX MBS model demonstrates a vibration spike at the tooth engagement frequency …”

E. V. Kozharinov, J. M. Temis Dynamic model of bevel gearing with friction damper S. 635-644

„… Dynamic model of bevel gearing with friction damper Ph. D. Egor V. Kozharinov, Central …” „… , Bauman Moscow State Technical University, Moscow, Russia Abstract Reduced dynamic model of bevel …” „… gear with friction damper has been developed. Frequency response of «gear - damper» system depending …”

H. Xu, D. Qin, C. Liu, Y. Yi, H. Jia Investigation of dynamic modeling and vibration transmission characteristics of helicopter main gearbox S. 449-460

„… the system. Comparing with the lumped parameter model, the finite element model (FEM) has high …” „… , and fmrp refer to the mesh frequency of the high-speed stage, inter-speed stage, low-speed stage, and …” „… / finite element hybrid modeling method. In the model, the structural flexibility of the shaft and housing …”

M. Heider, B. Pinnekamp, A. Beinstingel Planetary gears: modes, noise and modifications application and validation of simulation and experiment S. 57-68

„… variant, lower amplitudes of the tooth meshing frequency can be seen over large areas. High amplitudes …” „… high values for profile and overlap ratios are basic measures to reduce noise excitation. There are …” „… with higher excitation level than helical gears due to the lack of overlap ratio. In this paper, the …”

A. D. Rauch, C. Wirth An easy-to-use and fast computational model for the prediction of the influence of manufacturing errors on gear transmission error S. 645-656

„… in addition to high sidebands in the vicinity of the harmonics of the gear mesh frequency, the pitch …” „… errors. 2. Model for TE calculation The conceptual idea behind our modeling approach exploits that …” „… An easy-to-use and fast computational model for the prediction of the influence of manufacturing …”

M. Ruzek, F. Ville, P. Velex, Y. Marchesse Windage power loss reductions in high-speed gear pairs S. 91-100

„… than 93 m/s (Fig. 3). When the frequency value becomes higher (e.g. 150 Hz) that this is no more …” „… Windage power loss reductions in high-speed gear pairs Dr.-Eng. M. Ruzek, Prof. F. Ville, Prof …” „… far, the majority of the experiments and models deal with WPL evaluation for one single rotating …”

X. Du, B. Chen, X. Shan Robust force control of series elastic actuator using disturbance observer S. 1111-1122

„… for high performance force control is based on combinations of feedforward, PID, model-based, and DOB …” „… control is based on combinations of PID, model-based and DOB. 2. Generic Models The generic dynamic …” „… . To realize high fidelity force control, a high-gain control method makes system unstable. In this …”

J. Zhang, J. Wang Dynamic modeling and analysis of a star-wheel reducer S. 741-752

„… the range of 66.2 Hz to 197 Hz and are much higher than the input frequency of the star-wheel reducer …” „… range of 66.2 Hz to 197 Hz, and are much higher than the input frequency of the star-wheel reducer …” „… higher than the input rotational frequency. (3) Although the modal energy distributions of the first …”

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

„… each significant frequency. Lee et al. [3] established a finite element model of a gear pair and …” „… dynamic model with the backlash, mass eccentricity, profile error and time-varying mesh stiffness …” „… . Cooley and Parker [9] analyzed the sensitivity of the eigenvalues to model parameters with modal kinetic …”

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

„… capability of the model to predict variations in the frequency spectra in presence of surface damages, has …” „… Analysis of a Wind Turbine Gearbox using A High Fidelity Finite Element Model,” 2013. [3] C. H. Y. Guo …” „… Transmission3D model 3. Numerical modelling and Experimental measurements The modelling of the …”

A. Carbonelli Transferring knowledge about gear systems to machines in order to improve diagnosis efficiency S. 1065-1076

„… building models on moderate amount of data enriched by human expertise and knowledge form a more suitable …” „… followed to compare the results obtained according to the data processing chosen. 2. Model versus data …” „… frequencies are located) and the models available to understand the data (e.g. sidebands around meshing …”

B. H. Kien, D. Iba, Y. Ishii, Y. Tsutsui, N. Miura, T. Iizuka, A. Masuda, A. Sone, I. Moriwaki Vibration-based plastic gear crack detection system using a pre-learned convolutional neural network S. 1443-1452

„… ) model included 2 layers. Vibration dataset was visualized as 2D timefrequency images using Wavelet …” „… vibration signals to classify faults in steel ball bearings. This model is efficient to process 1D images …” „… using traditional CNNs, application of pre-trained models like VGG16 [8] reduces research cycles. With …”

D. Park, F. Santini, A. Rezayat, T. Tamarozzi, J. Pavel Experimental and numerical investigation of helical gear transmission error under gear misalignments S. 355-366

„… friendly process to build up high-fidelity models of gear transmissions for multibody dynamic simulation …” „… during the design stage coupled with experimental campaigns. In the numerical model, it is essential to …” „… compared with test results. This numerical model was also extended to adopt various combinations of gear …”

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

„… the lower frequency of testing. This is due to self-heating of the material at the higher test …” „… high molecular weight resins, are a preferred material of choice for gears due to their fatigue and …” „… fatigue and creep and present results on the effect of loading frequency and stress induced self-heating …”

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

„… their low frequencies while the smallamplitude, high-frequency ripple is of primary concern. Figure 5(b …” „… outTE signal in (a) time domain and (b) frequency domain. Fig. 6: (a) Low and (b) high-frequency …” „… orders in the high frequency range. 20 40 60 80 100 120 0 0.2 0.4 0.6 0.8 1 (a) (b) pQ 2 pQ mQ 2 mQ …”

Y. Hawwari, J. Touzet, H. Andre, H. I. Cakar, I. Khelf, L. Alloin Ring gear tooth cracks detected using instantaneous angular speed: wind turbine application S. 1039-1052

„… interpolation is preferred to avoid the introduction of high frequency noise which reduces the computation …” „… local weighted least squares method, while the latter is a model-based approach. The method applied in …” „… . The recent advances introduced the high effectiveness of the IAS as a potential competitor to CMS [3 …”

R. Slatter Condition monitoring of gearboxes using magnetoresistive sensors S. 229-244

„… models, which rely on high machine availability. This depends, in turn, on effective predictive …” „… popular approach for estimating the IAS, involves counting the pulses of a high frequency clock between …” „… monitoring of high-frequency spindles. Proc. of 7th HPC – CIRP Conference on High Performance Cutting …”

B. Brodmann, H. Bodschwinna Scattered light measurement on worm gears with high efficiency requirements S. 1567-1578

„… frequencies mandatory. As a result, the required high-frequency components of the surface are lost or the …” „… . Due to the possible high measuring speed, a large part of the tooth surface can be measured and …” „… CO2 emissions. Therefore, a Scattered light measurement on worm gears with high efficiency …”

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

„… , Prof. Jury Y. Temis, CIAM, Moscow, Russia Abstract Dynamic model of a planetary gear set has been …” „… well as the effect of main gear parameters is analyzed. It is shown that the high level of dynamic …” „… . The reasons of the high level of dynamic loads were the overestimated parameters of the profile …”

K. Liu, H. Liu, W. Shi Investigation on dynamic behavior of differential gearing with herringbone teeth S. 1215-1222

„… gears. Considering the inner stimulating of the system, the dynamic model of the herringbone gear …” „… coupled with bending-torsion-shaft effect is built by lumpedparameter method. By solving the dynamic model …” „… ratio, compact structure, high carrying capacity and long life span, are widely used, especially in the …”

J. Neufond, E. Rigaud, J. Perret-Liaudet, A. Carbonelli Influence of tooth profile modifications on the dynamic behavior of a planetary gear set – Experimental investigation and numerical validation for different amplitudes of tooth profile modifications S. 765-776

„… satisfying results. Introduction Planetary gear sets provide high gear ratio in a compact package. They …” „… proposed numerical model and the influence of tooth profile modifications on the planetary gear sets …” „… measurement and numerical model The input/output relation between sun and planet-carrier rotation speed is …”

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

„… defines a standardised process to generate a circumferential backlash curve with high spatial resolution …” „… widely used in transmission applications, since they allow gear drives with a compact design, high gear …” „… usually characterised with a relatively high wear rate and small contact pattern. As wear occurs the …”

T. Kahnenbley, G. Gravel Gear standards for reliable measurement of noise-causing gears – Quick verification of the measurement precision S. 1813-1822

„… variance. Finally, the influence of the selected filter on the measurement result of high-frequency …” „… specified to eliminate high-frequency oscillations during measurement. According to ISO 1328-1, a cut-off …” „… increasing. This especially applies to electric drives, where high-speed highperformance gearboxes for …”

J. Ahn, C. H. Choi, J. H. Yu, S. C. Kim A study of dynamic behavior of tractor pto driveline to analyze a rattle noise S. 461-470

„… direct-engine PTO drivelines. However, most tractors have used diesel engines to obtain high power output and …” „… with high explosive power. Accordingly, the engine torque ripple is directly transmitted to the …” „… reduce rattle noise for product quality. According to previous studies, the gear rattle model can be …”

T. Kleiber DIN Q6 meets DIN Q10 – Need for modern internal gear production S. 415-424

„… picked up speed beginning of the millennium and strongly after the market entry of “Tesla Model-S” in …” „… speed and last but not least low noise emissions. High power density pushes engineering towards …” „… had to get developed to do precise predictions on expected NVH level. It proved that a very high …”

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

„… tooth. Based on high-frequency time domain strain gauge readings of each gauge, the peak-to-peak …” „… tests based on strain gauge measurements. Recorded results are used for simulation model updating in …” „… load of the highest loaded planet divided by the average load of all planets. This Kɣ is equal to 1 in …”

S. Detzel, Y. S. Krieger, M. F. Traeger, T. C. Lueth Design of gear surface models for 3D-printing of plastic gears S. 1401-1410

„… Design of gear surface models for 3D-printing of plastic gears S. Detzel, M.Sc., Y. S …” „… models. A toolbox for Matlab was therefore created, implementing the gear design with direct interface …” „… applications from cost-sensitive mass production to high-performance applications [3]. Machining as well as …”

S. Vonderschmidt, A. Ott, A. Vonderschmidt High speed driven tool for machine tools using magnetic transmission technology S. 1145-1154

„… High Speed Driven Tool for Machine Tools using Magnetic Transmission Technology Dr. Stefan …” „… , Horb am Neckar Abstract This paper describes the development of a high speed driven tool for …” „… possible. This paper describes the simulation, design and measurements with a high speed driven tool …”

C. Chevrel-Fraux, R. Fargere, J. Bruyere, P. Velex Modelling of high power geared transmissions, introduction of a filling material S. 903-914

„… . Keywords: Lumped parameters, damping, hybrid model, sub-structuring, high-powered geared transmission …” „… Modelling of high power geared transmissions, introduction of a filling material PhD …” „… into a flexible wheel on the geared transmission behaviour. To this end, a hybrid model using …”

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

„… using the backto-back test rig, there is high potential for investigating this damage pattern using an …” „… helical gears. For this purpose, a simulation model of a TFF critical helical gear from a wind turbine is …” „… and secondary actuator iteratively so that the highest possible correlation of the stresses between …”

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

„… . The investigations to determine the tooth root load capacities on a high-frequency resonance test …” „… of the hardening mechanisms, which usually results in higher load tolerances. By means of a newly …” „… bench prove that the deep rolled tooth root areas endure a 28 % higher load level than the exclusively …”

M. Trubswetter, M. Otto, K. Stahl Evaluation of gear flank surface structure produced by skiving S. 1799-1812

„… conflicting a high load carrying capacity [32]. 2. Mathematical model of the skiving process kinematics …” „… B-spline curve to describe the cutter profile. Using a mathematical model, Shih et al. derive the flank …” „… a mathematical model for designing and analyzing skiving tools [14]. Guo et al. propose a …”

P. Barreiro, J. Hoffmeister, J. Hermes, A. Bronner New improvement opportunities through applying topology optimization combined with 3D printing to the construction of gearbox housings S. 1823-1834

„… also been possible to produce high-strength components. Thus, additive manufacturing is being …” „… limitations, which basically are the difficulties to manage the process, the high prices of printable …” „… conventional processes for single parts with a high level of complexity and degree of customization [9 through …”

M. Pillarz, A. von Freyberg, A. Fischer Multisensory measurement of the base circle radius as a fundamental shape parameter of large gears S. 1207-1214

„… ) represent a challenge in measurement technology due to high demands on tolerances, cf. Table 1. As the size …” „… addition, the size and mass of large gears lead to a higher logistical effort compared to small gears …” „… coordinate acquisition with a frequency-modulated interferometric sensor [4]. Alternative measurement …”

X. Tian, Y. Wu, J. Han, L. Xia Online estimate and compensation of the gear machining error based on electronic gearbox cross-coupling controller S. 1835-XXVIII

„… model and the gear processing technology. Second, the online compensation architecture for the five-axis …” „… higher accuracies are obtained for the helical gear, processed by the proposed method. Key words …” „… . They achieved higher control accuracy for the proposed CCC method compared to the conventional one …”

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

„… co-simulation module for the second and third order of the meshing frequency are higher (Fig. 10). Although …” „… , methods like the modal reduction of FEM-models were already introduced [1]. However, the modelling of …” „… simulate the vibrational behaviour of integral systems. In order to model a flexible bevel gear stage …”

T. Sturmlinger, A. Comak, A. Albers, S. Gerdhenrichs, R. H. Schmitt Methodical analysis and selection of auto identification systems in the gear box manufacturing S. 1509-1520

„… technologies radio-frequency identification (RFID), Data Matrix Code (DMC) and a track & trace fingerprint …” „… describe existing necessary models, methods and technology that are used in this contribution or …” „… and production process is in focus. ALBERS ET AL. show in [2] how to model those interdependencies …”

J. Lohmiller, J. Hoffmeister, J. Hermes Conventional high-strength nodular graphite iron as a substitute for austempered ductile iron (ADI) S. 877-892

„… Conventional high-strength nodular graphite iron as a substitute for austempered ductile iron …” „… increasing requirements, high-strength nodular graphite irons are in great demand. In order to fully exploit …” „… accompanied by the absence of microporosities or other casting defects in order to achieve high fatigue …”

K. Landet, J. Perret-Liaudet, E. Rigaud, J. Y. Guerder, M. Fraces Experimental study of railway gearbox whining noise S. 79-90

„… operating speeds and 8 applied torques following railway standards (high speed regime, ride around city …” „… system Bruel & Kjaer Lan-XI recorder. The sample frequency is limited to 16 kHz to buffer all data …” „… with the static transmission error and mesh stiffness fluctuation. Indeed, the frequency content …”

M. Zapf, J. Klose, F. Zanger, V. Schulze Analysis of process forces and surface topography when manufacturing case-hardened gears by double flanked hard skiving S. 1647-1658

„… Abstract Due to its kinematics, gear skiving offers high potential for hard finish machining of internal …” „… carbide tools and the chip formation. Process forces are high due to the hardness of the workpiece and …” „… transmission components with high power density. To increase load capacity, gears are case-hardened and then …”

F. Lubos, Z. Roth Bionic tooth root: fatigue testing and potential on gear units S. 47-56

„… , including the remaining protuberance, make it possible to reach approximately 10-15% higher root fillet …” „… many times higher than the nominal stress. In this context the stress distribution is not so much …” „… natural frequency of the housing. The peak of the sound power no longer occurs. 4. Conclusion and …”

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Schwingungen 2023

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2429 2023

Results in this title

S. Keller, A. Fidlin Thermomechanical Investigation of a Friction Oscillator under High-frequency Excitation S. 171-184

„… bearing under high-frequency excitation on the dynamical andtribological behavior. This model should give …” „… Zielgrößen.Thermomechanical Investigation of a Friction Oscillatorunder High-frequency ExcitationThermomechanische Betrachtung …” „… publication of Thomsen [1] deals with quenching friction-induced oscillationsusing high-frequency excitation …”

T. Koenig, F. Wagner, L. Kopp, V. Murali, S. B. Lokesh, M. Kley Simulation model to generate condition data of healthy and faulty transmissions S. 185-200

„… acquisition [10]. Model-based simulation for data generation becomes crucial in such scenarios. This approach …” „… ] Thus, a model-based approach is a valuable tool for understanding the system behavior and making …” „… signals for defined operating conditions. This paper emphasizes the use of a model-based simulation …”

Titelei/Inhaltsverzeichnis S. I-X

„… Technologie, KarlsruheThermomechanical Investigation of a Friction Oscillator under High-frequency Excitation …” „… IISimulation model to generate condition data of healthy and faulty transmissions 185T. Koenig, F. Wagner, L …” „… Kältekompressorantriebsstrang 43F. May, TÜV SÜD Schweiz AG, Winterthur, Schweiz VibroakustikEinfluss der Modellierungsstrategie …”

A. Balger, O. Zaleski, S. Keuchel Blocked Forces Messungen für die Optimierung von Maschinenschwingungen und Akustik ohne Prototyp S. 71-84

„… ] “High frequency source characterization of an e-motor using component-based TPA” - SIA conference 2021 …” „… vollständige Komponenten-TPA-Model kann auch zur Auralisierung des Gesamt-geräuschs genutzt werden. Für …” „… - https://blogs.sw.siemens.com/simcenter/simcenter-testlab-neo-2306-cad-frf/ (Stand: 21.09.2023) [4] “Frequency Response Function testing: retrieve the optimal …”

A. Schneider, A. B. Gowri, O. Enge-Rosenblatt Systematische Erfassung und Analyse von Schwingungsdaten für industrielle Anwendungen mit Hilfe von KI-Workflows S. 319-XII

„… AGGREGATIONDatenselektionMerkmalsextraktionModelltrainingModellentwurfModellevaluierungModelloptimierungIn-Stream-InferenzModelldeploymentDashboardsBild 2: Übersicht über die Phasen des KI-Workflows für Training und …” „… Python-Bibliothek: SampleLoader, FeatureExtractor, ModelTrainer, ModelEvaluator, ModelOptimizer.Ergänzt werden diese …” „… KI-Workflows wird zunächst der gesamte Ablauf des Modellent-wurfs (neben der Modellanwendung/Inferenz) in die …”

doi.org/10.51202/9783181024294

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Dritev 2023

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2420 2023

Results in this title

D. Schweigert, B. Morhard, F. Oberneder, L. Pointner-Gabriel, M. Otto, K. Stahl Speed4E: Simulative and Experimental Results on the Vibration Behavior of a High-Speed Planetary Gearbox S. 441-458

„… response of high quality. The high natural frequency of the sensors of approx. 45 kHz enables the detection …” „… Speed4E: Simulative and Experimental Results on the Vibration Behavior of a High-Speed Planetary …” „… advantages. Reaching an acceptable NVH behavior gets more challenging with higher speed, especially for the …”

P. Geradts, M. Kasten, A. Landvogt Psychoacoustic optimization of the NVH behavior of an eDrive power train – Application of a Targeted Micro Geometry Scatter on Helical Gears to break-up the regularity of the transmission error excita... S. 459-470

„… diagram illustrates, for instance, that the input stage gears generate relatively high frequency …” „… reduc-tion of approximately 30% in the amplitude of the tooth meshing frequency. A higher mitigation …” „… frequency components associated with the tooth meshing rates were reduced while simultaneously increasing …”

C. Mohr Acoustic Optimization of Electric Powertrains from a Vehicle Level Perspective S. 471-XVI

„… tonal noises at a higher frequency. For this reason, it is important to obtain a reliable estimate …” „… background noise. There is a high level of agreement between the simulated and actual vehicle interior noise …” „… optimizing the acoustics of electrified powertrains, so that the tonal noises occurring at higher frequencies …”

N. Missal, S. Schwertel Innovative cold metal forming processes for a sustainable future – Moving forward with helical gear drive components in a resourceand energy-efficient way S. 295-306

„… quality of IT8-9 [5]. During axial forming as an incremental process by using frequency modulation, high …” „… the disad-vantages of high material waste, high tool wear, energy inefficiency, required assembly …” „… frequency-modulated or recursive movement of the forming tool. The forming process consists of a forward stroke, which …”

A. Kappes, S. Frei, P. Noone, Stephan Rinderknecht Development and Design of a Range Extended four-speed Two-Drive-Powertrain S. 253-280

„… frequent stops for charging. Two examples of such a BEV that have achieved high efficiencies with small …” „… a succeeding model. It can be assumed that the limited range, espe-cially in cold conditions was one …” „… larger battery. One example of a state-of-the-art C-segment vehicle with a high electric range in the …”

J. Bonifacio, V. Warth, S. Scharr Optimizing sustainable high-performance e-drives S. 349-358

„… design of a high-performance oil-cooled PMSM-based e-drive system considering these requirements is …” „… high torque density at least means targeting a low system weight to improve the CO2-footprint …” „… . Optimizing sustainable high-performance e-drivesDr.-Ing. Joao Bonifacio, Dr.-Ing. Viktor Warth, Stephan …”

S. Yan, P. Piecha, N. Hetzel Virtual Generation of Load Profiles and Spectra for Designing Electrified Vehicles – The influence of software and driving scenarios on powertrain design S. 377-390

„… environment models and, on this basis, enables high flexibility and control over all test scenar-ios …” „… . Model-Based Approach To be able to generate conclusive load data for subsequent development processes, a …” „… holistic model-based approach can be used. This approach includes driver, vehicle, road, traffic and …”

H. Sandquist, E. Barrientos, S. Klacar Systemized Modular Approach for Electric Drive Unit Family Development S. 89-106

„… designed by leading semiconductor vendor High frequency switching dynamic, and efficiency optimized HW …” „… the modular approach, the High Pressure Die Casting aluminum housings were designed in a modular way …” „… , and sells high performance electric drive units for fully electric vehicles, addressing the whole …”

B. James Demonstration of a Cloud-based Gearbox Digital Twin – Using telematics data for reliability predictions S. 165-182

„… at least. For sure, the ‘design twin’ exists – a simulation model of the gearbox that informs about …” „… real-time simulation which matches the gearbox model used by the design engineers. Fatigue data is converted …” „… . Being a long-term user of Romax, the OEM had a confirmed model of the gearbox which could be used for …”

J. Jung, A. Helm Manufacturing technologies for reduced AC copper losses in hairpin stators – Increasing the efficiency of electric traction machines S. 131-142

„… Table 1. After that, the curves diverge with increasing frequency. The higher the frequency, the more …” „… reduced copper losses. Secondly, better thermal behaviour and thus higher continuous output. Third-ly …” „… , large copper cross-sections pose a challenge: as the electrical frequency increas-es, eddy currents are …”

doi.org/10.51202/9783181024201

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LAND.TECHNIK AgEng 2019

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2361 2019

Results in this title

G. Pasch, G. Jacobs, G. Hopfner, J. Berroth Multi-Domain Simulation for the Assessment of the NVH Behaviour of a Tractor with Hydrostatic-Mechanical Power Split Transmission S. 19-28

„… , noise transmission and sound radiation up to higher frequency ranges (2-5 kHz) can be found in the …” „… frequency range up to 1 kHz, which indicates a high relevance of the noise transmission paths and the …” „… result, a high model quality can be ensured despite high complexity [14, 15]. As described above, the …”

A. M. Moanţă, C. Bartolein, T. Riedel, S. Estel, C. Federle Generation of Digital Terrain Models from GNSS Data – Correction signal and working width-based evaluation S. 471-478

„… . Even though a high recording frequency allows an efficient identification of possible elevation …” „… Generation of Digital Terrain Models from GNSS Data Correction signal and working width-based …” „… .: 2814905115) aims to derive slope gradient information from Digital Terrain Models (DTM) and automatically …”

M. Sax, R. Latsch, T. Anken, V. Moser, P. Krummenacher Automated site-specific overseeding of grassland S. 165-228

„… automatic control system can react with a much higher frequency than a human managing all the different …” „… . The use of model-free reinforcement learning (RL) enables us to find the optimal parameter …” „… to actions so as to maximize the expected reward . Q-learning is an off-policy model-free …”

M. Bouten, T. Meinel, W. Kath-Petersen Development and utilization of a new application system for precise fertilizer placement in corn S. 513-520

„… km/h. In addition, the system showed a high operating performance and easy usage. These final results …” „… system of corn under field conditions, Fußfeder determined the highest root density to be in the first 20 …” „… slight linear negative correlation between the application frequency and the average duration of a …”

M. J. Darr, M. M. Qasaimeh, C. J. Murphy, B. R. Covington, V. Fuchs, T. Schaefer, F. Pardina, B. Reddy, J. Petri, T. Fuege, J. Hinze High Definition Yield Maps for Precision Ag Decision Support S. 327-334

„… against the predicted yield values in the high definition yield map (Fig. 5). The average 1sigma model …” „… of this approach. Fig. 5: Example evaluation of high definition yield map model error based …” „… frequency of image sampling was high enough to provide a 98th percentile success rate on providing a high …”

M. Hinrichs, P. Pickel, R. Isermann Model-Based Chiptuning Detection of Diesel Engines S. 1-8

„… , a simplified model for the mean high-pressure temperature T is used. A regression with only 3 input …” „… pressure sensor is sampled with a significantly higher frequency than in series operation. Instead of a …” „… Model-Based Chiptuning Detection of Diesel Engines M.Sc. Michael Hinrichs, Prof. Dr. Peter …”

C. Campanella, K. Huber, G. Monacelli, L. Ungaretti, M. D’Orazio, G. Scotto di vetta, M. Peruzzini, F. Grandi Ergonomic and compact armrest of agricultural tractors – Innovative methods to design an ergonomic armrest S. 243-252

„… heart beats) and the LF/HF ratio (low frequency / high frequency). Moreover, eye activity in terms of …” „… spatial distribution, number of fixations, as well as the blink rate or blinking frequency …” „… by the new armrest design are: - Higher comfort index for all users, and in particular for taller …”

S. Igl, G. Grommer, M. Auer, K. Grad Power Trains, Electric Drives and Mobile Hydraulics S. 135-144

„… specific tractor weight in kg/kW [4]. VDI-Berichte Nr. 2361, 2019 137 As a consequence, the high …” „… the pressure on the soil. However, caterpillar drives also have disadvantages, such as high cost …” „… intensity and reduced comfort, in particular the base weight of track tractors is significantly higher and …”

M. Piechnick Multi-domain simulation of agricultural system solutions S. 281-288

„… method, different domains are modelled and simulated with different model-specific tools. All …” „… of modelling editors, post-processing features, high performant solvers and especially the …” „… mechanical components, joints and forces were modelled in a rigid-body-simulator (RecurDyn). The models of …”

J. G. Wiecha, H. Bernhardt, T. Bogel, T. Herlitzius Reducing draft force on mounted implements by an electrified traction roller – Traction assistance on a slurry-injecting grubber S. 495-502

„… . In the case of loamy soils and clay, a high draft force is needed for slurry deposition into the …” „… manufactures would not stock all tractor models with additional generators. Therefore, the development of such …” „… because of its high weight of around 500 kg. Behind the roller, a set of seven furrow grubber with …”

S. Braun, M. Trapp, C. Nass, M. Gerbershagen, S. Schweitzer, R. Falcao, M. Schweitzer, N. Wire Growing Smart Farming Services – How to get the best out of farming data S. 335-340

„… creation of new business models, most manufacturers of agricultural equipment do not know which data they …” „… of the notation. Introduction With the creation of new business models based on insights …” „… data catalogs (e.g., [1]) or canonical data models. The result is an overwhelming collection of data …”

L. Levato, C. De Marco, P. Tamamidis, G. Monacelli, S. Panunzio Development of a compact After-Treatment System for agricultural tractors S. 295-304

„… mixing volume must be big enough to guarantee high conversion efficiency. However, because of the new …” „… anymore compliant with market requirements, especially for small and medium tractors. To achieve a high …” „… and a regeneration frequency as much aggressive as a DPF with benefits for cost and fuel saving …”

A. Biswas, E. Eising SoilReader: A new in-situ multi-depth, multi-constituent, on-the-go precision soil analyzer S. 355-376

„… modelling, it will be considered later before implementing the models in the software. Moderate to high …” „… high-resolution. This information helps to optimize use of land resources when planning the next land management …” „… , integrated, and self-contained design, with high efficiency and rugged production makes SoilReader highly …”

doi.org/10.51202/9783181023617

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Systemorientierte Impedanzsimulation eines Hochvolt-Bordnetzes am Beispiel Kraftfahrzeug

Sören Schörle

Series: Elektrotechnik

Volume 416 2017

Results in this title

Literaturverzeichnis S. 139-146

„… ] PRABHAKARAN, S. ; SULLIVAN, C. R.: Impedance-analyzer measurements of high-frequency power passives …” „… . ; MATTAVELLI, P. ; BOROYEVICH, D.: EMI modeling of half-bridge inverter using a generalized terminal model. In …” „… . ; BOROYEVICH, D.: EMI Modeling of Half-Bridge Inverter Using a generalized Terminal Model. In: IEEE. [33 …”

Titelei/Inhaltsverzeichnis S. I-XII

„… possible resonances by modelling and simulating the system in a frequency range XII Abstract between 1kHz …” „… Resonanzen zu identifizieren. Abstract High-voltage powernets are being increasingly implemented in …” „… and 10MHz, without having a complete build-up system available. The models are created by using as …”

doi.org/10.51202/9783186416216

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ELIV 2019

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2357 2019

Results in this title

P. Gesner, F. Kirschbaum, F. Landenberger, J. Scheiffele, L. Morawietz, B. Bäker Modeling and identification of electrochemical energy storage for drive train development – Review and evaluation S. 101-114

„… parameters of those models are usually estimated by rudimentary least square methods in the frequency and …” „… electric battery behavior within vehicles aims to define a frequency spectrum for the models. A reduction …” „… of high-frequency components is the low-pass behavior of electrochemical cells. Impedance …”

A. Kashyap, A. Gendron-Hansen, D. Sdrulla, B. Odekirk The Transition of EV Applications from Silicon to Silicon Carbide – Helping the power electronics design community overcome reliability challenges for EV applications that use silicon carbide S. 177-188

„… performances and higher reliability. The switching frequency for these applications is in the range of 20 to …” „… recovery time on the power losses at high frequency SiC electrical and thermal properties lead to a …” „… adoption is much higher than historical rates. Initiatives such as the EV30@30 campaign set the benchmark …”

G. Mabire Trucks as the drivers of connectivity-based innovation – What the passenger car sector can learn from the experience already gained in trucks today S. 275-282

„… solutions involve either direct high frequency communication to a gantry when the vehicle is driving …” „… that commercial vehicles have higher fitment rates of connectivity related functions. This is partly …” „… offer efficiency benefits, the key profitability parameter for fleets. High fitment rates are the …”

P. Engel, A. Geraldy, J. Wolter Using Cloud-Based Electronic Horizons to Enable Distributed Driving Functions S. 255-268

„… synchronized. At CAN, some message types are delivered with higher frequency than used by the electronic …” „… Tracking uses high frequent measurement data (odometer and other vehicle sensors) to estimate the progress …” „… road segments (links) from the server-based map matching (cf. section 3.1) to learn a prediction model …”

M. Brunner, H. Adlkofer Hardware matters: how one chip can impact the security of a connected vehicle S. 455-468

„… traditional business model is upon radical change: (i) CO2-neutral mobility requires alternate drive systems …” „… enabling new use cases to the driver and also opening up new business models. (iii) New mobility concepts …” „… the air updates helping to reduce costly recalls. It also allows to create new business models like …”

M. Kleinkes, W. Pohlmann, C. Wilks Boost Safety & Styling for vehicle lighting – Individualization and new Functionalities S. 551-566

„… usually must be mounted outside of the lamp housing. Due to the high-frequency data transmission to the …” „… . Abstract High Definition Solid State Lightsources (HDSSL) will boost new functionalities such as light on …” „… highly attractive to customers and boost safety & styling significantly. 2. Introduction High …”

doi.org/10.51202/9783181023570

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Drivetrain for Vehicles 2016

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2276 2016

Results in this title

Y. Takeda, M. Kawaminami, M. Tsuchida, H. Takekawa Gear Whine Noise Reduction Technology of New Model Transmission for FF-Hybrid Vehicle S. 435-450

„… frequency gear whine noise is caused by higher motor revolution. It is therefore a difficult engineering …” „… shows the improvement effect by structure change. Frequency [Hz] Contribution high low Sun gear …” „… Gear Whine Noise Reduction Technology of New Model Transmission for FF-Hybrid Vehicle Yasunori …”

C. Fouret Fatigue Strength of pendulum components in dual mass flywheel VDI 2016 S. 271-280

„… interact and can be highly stressed. So these parts have to be designed with high robustness and high …” „… fatigue strength. An original simulation workflow has been developed in VALEO to model that critical …” „… situation. DMF 1D model and pendulum 3D model are validated through independent bench tests. A great …”

M. Jordan, P. Tenberge Optimized Start-Stop-Control of a P2-Hybrid – Identification of critical parameters for comfort and timing S. 421-434

„… give an overview over the model scope and assumptions the model is based on. The modelling technique …” „… employed for the physical model is the so called acausal modelling using bond graphs to represent the …” „… the disconnect clutch to the crankshaft are also modelled with high fidelity to accurately predict the …”

M. Maisch, M. Homm, U. Keller The Highly Efficient 9GH-TRONIC Plug-In Hybrid Transmission by Mercedes-Benz S. 339-352

„… there is no increase in resonance frequency at higher speeds. 2.5 Mechatronic control system …” „… electrified passenger car and SUV model series. 9G-TRONIC, the nine-speed automatic transmission, is …” „… powerhead are its high range of functions and very high efficiency. With the powerful electrical drive …”

S. Fujimoto, N. Shiomura, K. Sato, Y. Kawahara The Trend and Future of Torque Converter for CVT S. 869-878

„… makes unit bigger, heavier and higher cost. Hence, as Figure 7 shows, early model of TC for CVT had …” „… application of high tensile steel, aluminum and CFRP. For the transmission, while the expansion of …” „… the TC for CVT, it seeks higher torque ratio and larger capacity with balancing system efficiency and …”

A. Albers, S. Ott, N. Bursac, S. Rapp Product Generation Engineering – efficient and effective to innovative drivetrain solutions S. 17-32

„… assemblies or extending their application domain [Albers et al. 2015c]. Using the Kano Model [Kano et al …” „… actual market conditions, restrictions and needs [Bailom 1996]. Figure 1 shows the model of product life …” „… improvements of already used technology. VDI-Berichte 2276, 201618 Fig. 1: Left: model of product life …”

A. Kooy, D. Eireiner, T. Krause, C. Herbers, B. Vögtle Torsional Damping Systems for all relevant Powertrains – Extending current Damping Technologies S. 257-270

„… Antriebsstränge angepasst werden. Abstract Effective damper systems are needed in order to drive at high …” „… driving the driver will lose direct contact with the powertrain, requiring an even higher degree of …” „… experience [1, 2]. Fig. 1: Development trends leading to higher torsional isolation demands In the …”

M. Kraft, W. Pflieger, S. Henzler, C. Nizzola, S. Rinderknecht Simulation-based study of drivetrain electrification to improve driving dynamics S. 177-192

„… . Kirschbaum, “Particle Swarm Optimization for Automotive Model-Based Calibration,” in 6th IFAC Symposium …” „… that P4 architecture with a two-speedtransmission shows the highest potential for lap time improvement …” „… center of gravity is shifted to vehicle’s center, thereby higher cornering speeds are possible. In …”

A. Albers, U. Reichert, S. Ott, A. Radimersky Software supported development of a Battery Electric Vehicle powertrain considering the efficiency S. 321-338

„… class respective sport cars. Customers of these cars are willing to pay the high costs [6]. Tesla Model …” „… modelling, e.g. gearing, the possible gearbox-topologies can be transferred into a simulation model that …” „… electronics and the electric machine. This leads to a higher efficiency of the whole drive system. To find …”

S. Heller, S. Heppel The new BMW hybrid powertrain with eight speed hybrid module S. 353-368

„… transmission as displayed in figure 1. Further necessary components are the high-voltage battery and the power …” „… transmission kit from the active hybrid fleet was redesigned according to the requirements on higher …” „… optimized for a high performance with minimum installation space requirement. The permanently excited …”

B. Kohn, M. Otto, K. Stahl Noise Reduction Potential of Waveform Flank Modifications – Topological Waveform and Waveform-like Modifications Provide Promising Optimization Perspective S. 451-468

„… acceleration measurements. High frequency sampling with 104 kHz and processing allow evaluation up to the …” „… competing goals in terms of high load carrying capacity as well as low noise excitation levels. Often …” „… microgeometries that grant high load carrying capacity. Modifications of the waveform geometries are conducted …”

doi.org/10.51202/9783181022764

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AUTOREG 2017

VDI Wissensforum GmbH (ed.)

Series: VDI-Berichte

Volume 2292 2017

Results in this title

S. Gantenbein, M. Weiss, E. Ivers-Tiffée Elektrochemische Charakterisierung und physikalische Modellierung von Lithium-Ionen Batterien S. 157-170

„… spectroscopy measurements in the high and middle frequency range and a corresponding DRT-analysis. Using an …” „… , high-resolution electrochemical characterization in the time and in the frequency domain of the battery is …” „… processes (PCT,A/C, PSEI,A) taking place in the high and middle frequency range (approx. 10 kHz – 1 Hz) are …”

M. Grotjahn, B. Luck, M. Feldt Nichtlineare adaptive Regelung und Störkraftkompensation für elektrische Gaspfadaktoren S. 337-352

„… input-output-linearization. This powerful control method is rarely spread in practice due to its high sensitivity to model …” „… forwarding in section 4. 2.1 Modelling of electrical gas path actuators The overall model consists of an …” „… can be modelled as a function only of joint velocities. A widespread detailed model is the friction …”

K. Abdelgawad, S. Henning, P. Biemelt, S. Gausemeier, A. Trächter Networked Driving Simulation for Future Autonomous and Cooperative Vehicle Systems – Development of a Modular Platform for Networked Driving Simulation Based on High-Level Architecture S. 539-550

„… of a Modular Platform for Networked Driving Simulation Based on High-Level Architecture M.Eng …” „… of a modular platform for networked driving simulation based on the IEEE standard High …” „… . A simulation model of an autonomous driving system was utilized and a group of test persons was …”

B. C. Heinrich, D. Fassbender, H.-J. Wuensche Autonomous Cooperative Multi-Convoy Control for Off-Road-Scenarios S. 365-376

„… length. Communicating all estimates to all followers at a high frequency would alleviate the problem but …” „… a lower frequency and predict the system’s behavior between updates. Let x denote the state of the …” „… over the platoon is minimized. By using the local measurements (which are available at a higher …”

doi.org/10.51202/9783181022924

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Design and Optimization of Oil-Cooled Medium-Frequency Transformers with Foil Winding and Toroidal Core for High Power Applications

Siqi Lin

Series: Berichte aus dem IAL

Volume 05/2024 2024

doi.org/10.51202/9783959009454

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