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VDI Wissensforum GmbH - International Conference on Gears 2023

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VDI Wissensforum GmbH (ed.)

International Conference on Gears 2023

Series: VDI-Berichte

Volume 2422 2023

Results in this title

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

„… smallest transmission error and evener load sharing is that the planets mesh with the sun gear in phase and …” „… impact of errors in the planetary gear drives on load sharing under different meshing phases [8].The aim …” „… different combinations of meshing phases on the transmission errors. This difference can be clearly …”

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

„… phase of the dynamic transmission error (1st order), which is printed in Figure 6. Especially in the …” „… therefore directly cou-pled to the phase angle of the transmission error. If the phase angle changes over …” „… phase angle of the dynamic transmission error, which changes over the speed due to dynamic effects. The …”

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

„… Experimental Investigation of Influence of Indexing Errors on Gear Rattling Ata Donmez, Ahmet …” „… is external excitations, variation of backlash boundaries due to certain manufacturing errors can …” „… significantly alter the rattling behavior. Among those, tooth indexing errors modify contact boundaries in a …”

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

„… is thus possible to set center distance changes and planet pin position errors. If the phase position …” „… displacement behavior the transmission error and the displacements of different components can be measured. The …” „… errors have the highest influence on the sun trajectory and the load sharing. The misalignments occurring …”

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

„… validation Considering planetary gear tooth numbers to apply the appropriate mesh phase between Sun-Planet …” „… , Lindley, United kingdom Abstract This paper showcases how optimizing the meshing phase during the …” „… concept phase of a planetary gear set can help reduce the transmitted vibrations to the rest of the system …”

D. Yamazaki, D. Iba, J. Chong Low, I. Moriwaki Cross-correlation analysis among tooth profile and helix deviations S. 1273-1278

„… fabricated by generation cutting, the effect of various errors during machining is periodically distributed …” „… of gear surfaces. This method enables a bird's-eye view of the phase differences between tooth helix …” „… network from correlation coefficients, and studied a method to evaluate the errors that a hobbing machine …”

J. Sanchez-Espiga, A. Diez-Ibarbia, M. Iglesias, A. Fernandez-del-Rincon, F. Viadero, J. Calvo-Irisarri, A. Fernandez-Sison Statistical study of the mesh load factor of planetary gear transmissions affected by inherent manufacturing errors S. 139-156

„… manufacturing errors Application of the Method of Monte Carlo to the gear manufacturing process in planetary …” „… gears with pinhole position and tooth thickness errors Dr. J. Sanchez-Espiga, Dr. A. Diez-Ibarbia, Dr. M …” „… manufacturing errors, more precisely, the tooth thickness and pinhole position errors. This study is performed …”

A. Yavuz Kanyilmaz, B. Karba, M. VARDAR Classifying plastic beveloid gear quality considering manufacturing errors S. 1159-1172

„… Classifying plastic beveloid gear quality considering manufacturing errors Mech. Eng. A. Yavuz …” „… ]. Possible manufacturing errors for plastic gear are investigated. AGMA 905-A17 standard tells us the unique …” „… ., conducted the sensitivity of tooth surface deviation to installation errors mentioned [9]. As a result of …”

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

„… Phasen der Entwicklung ist eine Voraussetzung für die Optimierung der Zahngeometrie. Mit einer …” „… normal velocities at two specific points during the rundown phase with experimental measurements, a …” „… is observed, with a maximum relative error of eigenfrequencies amounting to 0.29%. This …”

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

„… transmission error measurement using phase demodulation”. Proc. I.Mech.E., Part C, J.Mech.Eng.Sci. 210(C3 …” „… Assessing gear mesh misalignment in a parallel gear set by transmission error measurements M. Sc …” „… der TE Messung ab. Abstract Gear transmission error (TE) is the main contributor to gear vibration …”

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

„… the excitations from the gear transmission error, torque ripple and shaft unbalances the dynamic …” „… performed on standard computers. This is suitable in the design phase, where the NVH evaluation for a high …” „… goal was to verify the transmission error between both calculation approaches properly. Table 1: Gear …”

L. Bonaiti, M. Brambilla, P. Chiariotti, A. Cigada, C. Gorla, G. Boni, P. Codeluppi The effect of pinion axial positioning on noise and transmission error of face hobbed and face milled bevel gears S. 839-852

„… The effect of pinion axial positioning on noise and transmission error of face hobbed and face …” „… factors. One of them is the so-called Transmission Error (TE), which generates a dynamic excitation from …” „… the design phase, the TE is one of the first parameters the designer can act on in order to modify the …”

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

„… . First, a tooth pair in a theoretically error-free state should be investigated with LTCA (contact …” „… analysis under load), to determine the usual critical results such as transmission error, excitation force …” „… design phase. From experience we know that certain types of modifications are more stable against …”

B. Karba, N. Yildirim Backlash optimization via compatible gear couples on the assembly lines for planetary gearboxes S. 1147-1158

„… gear mesh performance. It is inevitable due to operational needs, manufacturing errors and installation …” „… smooth transmitting power. Gear engineers are responsible for determining backlashes in the design phase …” „… specific manufacturing and assembly errors have been validated both numerically and experimentally. Two …”

Y. Koch, E. Kirchner, J. Hirschmann Measuring Instantaneous Angular Speed using a Gear Wheel as Material Measure to detect Pitting Damage during an Endurance Test S. 81-96

„… magnet. The two signals of each sensor element are phase-shifted by 90° to calculate the rotation angle …” „… , 202386Data evaluation Fig. 4 shows the two sine-like raw signals of Sensor MR Z3. Due to the phase shift …” „… . Therefore, influence the frequency spectrum a phase and amplitude excitation similar to the GMF, which …”

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

„… the mesh load factor K in an early design phase. The modelling approach is validated via measurement …” „… , which considers mainly the relevant errors, the clearances and the stiffnesses of the involved parts. A …” „… planets, which is the result of planet pin error and planet bearing clearance. In addition to that up to 4 …”

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

„… (pitch VDI-Berichte Nr. 2422, 20231390error) and in tooth shape profile variations. Injection molded …” „… , combined with a certain level of accuracy of resulting in pitch error variation and local tooth shape …” „… variations plus the intrinsic run-out of a pinion and its mating gear results in a total transmission error …”

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

„… , rendering their operational behaviour highly complex. Throughout each meshing phase, cyclic loading …” „… measurement errors. 2. Materials and methods In line with previous work [11,13,25], this study focused on the …” „… the input phase, the MRAW camera recording data presenting a full 360° gear rotation (a reduced number …”

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

„… reduce the transmission error (static and dynamic). Proposed modifications have been implemented in a …” „… “transmission error”. The transmission error is caused by eccentricities, geometrical defects and deformations …” „… benefit. A stiff housing reduces the deformation under load and thus reduces the transmission error. A new …”

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

„… test stage. There were 3 phases for each stage. The total running time for an efficiency test was 14.25 …” „… hours as shown in the test profile (Fig. 3). VDI-Berichte Nr. 2422, 20231006The 3 phases of the …” „… 5.25 hours. During each of the running-in phase, applied torque were increased in steps from low to …”

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

„… , implement simulation approaches that can be applied in the early stage of a design phase to reduce the …” „… : Prediction of the worn profile and the maximal wear height using the MEGT model At this stage, the error on …” „… potential issue that could occur during the filling phase (thermal hesitation, weld lines in critical areas …”

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

„… gear errors. The damping was assumed to be proportional to the meshing stiffness of the tooth pairs …” „… gearbox. For this purpose, a transmission error model was used to optimize some gearbox geometric design …” „… it can be useful at the design phase and during the measurement or investigation of a real problem …”

W. Ramdane, C. Changenet, S. S. Ouali, C. Chevrel-Fraux, P. Casanova Thermal model of a planetary gear set using an isothermal approach S. 451-466

„… distribution of the gearbox’s components during heating and cooling phases. In addition, a thermocouple is …” „… transient thermal behavior during heating and cooling phase between the coldest fixed part and the warmer …” „… point measured. On one hand, for the cooling phase, it is obvious that all parts have similar …”

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

„… excitation, oblique tail shaft's length and transmission error amplitude on the torsional vibration were …” „… synchronous motor[15].Parameters Value Number of phases 3 Number of poles 4 Stator phase resistance ( ) 0.03 …” „… axis inductance respectively, 𝑅 is the stator phase resistance, is electric angular velocity, is the …”

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

„… extensive experimental prototype tests are required. In an early design phase, these detailed boundary …” „… the number of planets, positional errors and floating shaft systems. For the characterization of …” „… effect as early as the preliminary design phase of the gearbox since it affects the load carrying …”

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

„… tension of 0.03 N/m is used as surface tension model between the two phases. Fig. 3: FZG gearbox: on the …” „… losses at 10.5 m/s tend to lie in the upper range of the measurement error bar, while at 15.7 m/s and …” „… phase can be seen for each individual frame. In the test, the air/oil mixture can be observed as a …”

H. Yakaria Securing the Quality Chain by the Networking with the Gear Suppliers S. 1617-1630

„… Standardisierung eine entscheidende Rolle und umfasst alle Phasen vom Entwicklungsprozess über die Fertigung bis …” „… , real-time updates, and prompt responsiveness to errors or user requests. These requirements can be fulfilled …” „… storage and structure. This consistency minimizes data discrepancies and errors that may arise when using …”

G. Guimarães, L. Robatto, R. Rego, A. Faria, A. Borille, J. Mascheroni Surface integrity of 20MnCr5 pinion gears manufactured through laser powder bed fusion S. 1845-1858

„… incorporate significant microstructural changes due to phase transformation. The combination of these …” „… mechanism present during L-PBF. Especially for common gear steels, mechanisms related to phase …” „… transformation play a significant role on the RS formation. During cooldown, metastable phases such as austenite …”

C. Kunik, J. Kunert Wetting and oil flow analysis of planetary gearboxes using oil flow simulations S. 467-484

„… additional increase of calculation time results from the application of two-phase flow applications, e.g. the …” „… describe the phase transition. In combination with very fine grids, this quickly leads to a very high or …” „… . Furthermore, each particle can describe its own phase, which avoids an additional model for the phase …”

F. Concli, M. N. Mastrone Latest advancements in the lubrication simulations of geared systems: a technology ready for industrial applications S. 499-518

„… phases), the latter involves only one single phase fluid. Churning losses are predominant in dip …” „… interpolation causes numerical error and loss of accuracy. Klier et al. [46] applied the over-set mesh approach …” „… possible to keep the cavitation phenomenon into account by simply adding a source term mimic the phase …”

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

„… consist of two phases. (i) the number of cycles to the initialization of the root crack and (ii) the …” „… . Similarly, the monitoring of pitch error deviation using precise angular encoders would help separate the …” „… two phases in root lifetime. VDI-Berichte Nr. 2422, 2023 1313Fig. 6: Tooth root damage accumulation …”

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

„… must be considered in the design phase. 1. Introduction Modern plastic gears are used in a wide range …” „… Technical Meeting (2022). [7] Tsai, M.-H.; Tsai, Y.-C.: A method for calculating static transmission errors …”

L. Bonaiti, M. Monti, C. Gorla, M. Geitner, T. Tobie, K. Stahl The consequences of different methodologies for the elaboration of pulsator test results with respect to the load spectrum assessment of gears S. 33-52

„… [1,14–18], and must be addressed before using pulsator test data in the assessment phase. Hence, some …” „… , and ε is the error term. Under the assumption that the logarithm of the fatigue limit (V) and the …”

P. Romio Spur Gear Teeth Reconstruction via Direct Laser Deposition S. 1641-1664

„… order to rebuild a gear tooth and repair a gear using the optimized parameters found. The phase …” „… . For this specific case, a miss calculation led to the already mentioned problem, and so a human error …”

doi.org/10.51202/9783181024225

Maria M. Kubek, Zhong Li - Autonomous Systems 2018

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Maria M. Kubek (ed.), Zhong Li (ed.)

Autonomous Systems 2018

Series: Informatik/ Kommunikation

Volume 862 2018

Results in this title

P. Meesad, K. Rojanawan Time Series Imputation and Prediction Based on Machine Learning S. 48-61

„… amount of missing values due to human errors, data transmission errors, machine errors, or IoT sensor …” „… : stationarity, uncorrelated random error, and no outliers. Since the time series repeats itself, the future …” „… as human, machine, equipment, or sensor errors. To deal with the problems, researchers may choose to …”

M. Schaible Notes on the Design of a Statically Safe Microprocessor S. 18-30

„… cycle: Loop over the operations and enable the various functional units (see fig. 5). A decode phase is …” „… architecture is to relieve the CU from complex logic, the fetch phase is integrated into the IR. The opcodes …” „… approach the CU does not implement a distinct fetch phase. EOP−3 EOP−2 EOP−1 EOP0 EOPl−1. . . A B C …”

doi.org/10.51202/9783186862105

Aron Sommer - Backprojection Autofocus of Large Ships with Arbitrary Motion for Synthetic Aperture Radar

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Aron Sommer

Backprojection Autofocus of Large Ships with Arbitrary Motion for Synthetic Aperture Radar

Series: Informatik/ Kommunikation

Volume 867 2020

Results in this title

Basics of Backprojection Image Reconstruction S. 13-39

„… antenna position error γǫ = γ̂ − γ leads in general to a phase error φǫ, which smears the image in the …” „… , imperfections of several hardware components and phase noise ψǫ result in radar system timing errors [DL13 …” „… ]. These timing errors can be modeled by independent phase errors. The range-compressed data is phase …”

Introduction S. 1-12

„… shift, which is actually a quadratic phase error and thus the smearing. If the point moves linearly in …” „… non-parametric autofocus algorithms. The parametric techniques model the phase errors as a time-dependent …” „… coefficients of this mostly quadratic polynomial. This phase error function is then used to refocus the smeared …”

Autofocus of Large Ships with Arbitrary Motion S. 75-111

„… ] and the idea of estimating phase errors by maximizing image sharpness similar to Ash [Ash12]. In …” „… backprojection autofocus by Ash [Ash12] improves the focus by estimating phase errors based on maximizing image …” „… range errors rǫm(x̃i) can be approximated by phase errors φǫm in the following way: rǫm(x̃i) ≈ r ǫ m = c …”

Conclusions S. 112-116

„… and estimates pulse-by-pulse a phase error of each subimage separately by maximizing subimage …” „… sharpness. These estimated phase errors are forced to be smooth using an iterative Gauss- Newton …” „… regularization framework. The computed subimage phase errors are interpolated to all pixels by quadratic …”

A Appendix S. 117-118

„… : (−π,π] → R+ is the image sharpness cost function depending on the mth phase error φǫm. In Eq. (A.1), the …” „… ) are fixed and known. Only the phase error φǫm is variable. The image R C m is basically the phase …” „… phase error φǫm is used to simplify Eq. (A.1) in the following way: R(φǫm, xi)R ∗(φǫm, xi) = ( RCm(xi …”

Titelei/Inhaltsverzeichnis

„… backprojection – imaging of moving objects – phase errors – autofocus – regularization – spotmode – stripmap-mode …” „… , phase errors, autofocus, regularization, spotmode, stripmapmode. K U R Z FA S S U N G Radar-Luftbilder …” „… . . . . . . . . . . . . . . . . 41 3.2 Computational Costs . . . . . . . . . . . . . . . . . . . . . . 44 3.3 Exact Range Error …”

Optimization of Fast Factorized Backprojection S. 40-74

„… represented by the black circles evaluated at subimage boundary along line-of-sight. systematic phase errors …” „… of interest to the beam-center lines, the larger are the phase errors. These phase errors can be …” „… range errors, which result in a loss of accuracy. The range errors and thus the image accuracy can be …”

Bibliography S. 119-128

„… , D. C. Ghiglia, and C. V. Jakowatz Jr. “Speckle Processing Method for Synthetic Aperture Radar Phase …” „… . E. Mancill and J. M. Swiger. “A Mapdrift Autofocus Technique for Correcting Higher Order SAR Phase …” „… Errors.” In: 27th Annual Tri-Service Radar Symposium Record. 1981, pp. 391–400. [MM93] Antonio Martinez …”

doi.org/10.51202/9783186867100

VDI Wissensforum GmbH - International Conference on Gears 2022

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VDI Wissensforum GmbH (ed.)

International Conference on Gears 2022

Series: VDI-Berichte

Volume 2389 2022

Results in this title

C. Li, B. Peng, Y. Luo Research on indexing error of gear with few teeth in rolling process S. 445-456

„… produces overlapping areas. With the increase of the initial phase error, the damage of the formed tooth …” „… rolling tools The initial phase error of rolling tools directly affects the uniformity of indexing. Fig …” „… Research on Indexing Error of Gear with Few Teeth in Rolling Process Chengsheng Li, Bo Peng …”

J. Theling, M. Willecke, J. Brimmers, C. Brecher Influences on the Excitation Behavior of Lightweight Planetary Gearboxes S. 421-432

„… error curve is also phase-shifted by exactly one-third pitch after one-third revolution, see Figure 9 …” „… the influence on the transmission error was not determined. Therefore, the objective of this report is …” „… the carrierwalls Position deviation of the axes Pin hole error of the carrier Center distance …”

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

„… and the internal excitation due to static transmission error. The non-linear and chaotic behavior of …” „… the system's displacement response was investigated using time histories, FFT spectrum, phase portrait …” „… displacement of a component or transmission error was monitored. Due to the lumped parameter formulation used …”

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

„… properties of polymer gears, like efficiency, transmission error, operating temperature, achievable lifetime …” „… transmission error and vibration. The same wire cut pinion made out of 100Cr6 steel, flanks hardened to HRC 55 …” „… 000 min-1. This corresponds to a measurement error in tooth deformation of ±0.1 µm given a plastic …”

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

„… and systematic errors in gear micro geometry and gear flank face topography often lead to noise. This …” „… the lead angle deviation (? ) can influence the transmission error (TE). Referencing Fig. 4, the …” „… . Periodic signals can be decomposed via FFT-Analysis into frequencies, amplitudes and phases. Many modes can …”

R. Longato, M. Turci The effect of temperature on the SN curve for bending stress measured on a new test rig for plastic gears S. 1209-1222

„… control to favor gradual, uniform heating. This transient heating phase will be subsequently eliminated …” „… . As already stated, the first “clean-up” phase involves elimination of the transient zero torque …” „… measured during the complete test phase. Given the high number of temperature measurements, it is possible …”

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

„… to the minimum peak-to-peak transmission error (PPTE), and secondly the “worst-of-worst" (WOW) design …” „… peak-to-peak transmission error and subsequently lower excitations to the powertrain system. Introduction The …” „… Transmission Error (TE) is known as the key factor affecting the excitation behavior. The dynamic interaction …”

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

„… , 3, 9]. Loaded transmission error The meshing of two gears can be described as spring and damper …” „… transmission error (TE). Besides the described tooth deflection, which is load-dependent, the TE has a …” „… direction with a VDI-Berichte Nr. 2389, 2022 25590° phase shift and are sinusoidal oscillations. The …”

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

„… as the frequency content of the measured transmission error signals. 1. Introduction Spur gears are …” „… that represents the tooth modifications and manufacturing errors. A relative gear mesh displacement is …” „… at  1460 rpm and 60 Nm, obtained during the speed-down phase of the test. The corresponding FFT …”

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

„… , time-varying meshing stiffness, error excitation, and external random wind load, established a 5-MW wind power …” „… support mechanisms and floating structures, errors, and the system’s physical parameters that affected the …” „… diagram of the A phase current. The frequency domain diagram shows that the electric fundamental wave …”

P. H. O. Teixeira, J. Brimmers, T. Bergs Consideration of micro-interaction in the modeling of generating gear grinding processes S. 1517-1528

„… topography. In order to achieve the objective proposed, the current work will be divided into 3 phases. In …” „… Phase 1, an analysis of the grinding worm topography will be performed. Next, in Phase 2, a simulation …” „… measurements performed in Phase 1 as well as the kinematics of the generating gear grinding. Finally, in Phase …”

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

„… of the wear track in order to prevent systematic errors that would have happened due to the low …” „… intermittent parameter variations within one continuous test). When error bars are shown, they represent …” „… a single cross-section scan on a semi-cylinder (right). In order not to include geometrical errors …”

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

„… , boundary friction only occurs during the start-up phase [10]. The flank speeds are very low and there is an …” „… 2 Also called rotational path deviation, single-flank pitch deviation or transmission error …” „… measured in the relative angle, which are caused by geometric errors, such as inaccuracies during …”

Titelei/Inhaltsverzeichnis

„… error of gear with few teeth in rolling process 445C. Li, B. Peng, Y …” „… Materials Engineering IWT, Bremen, GermanyTooth profile error detection only using a small spot type of …” „… trains in the early design phases – Exploratory study of feasibility and possible approaches …”

S. A. Bohme, J. Keski-Rahkonen, T. Komssi A standardizable approach to tooth flank fracture S. 371-388

„… parameters. The acting stress tensor is a superposition of dynamicHertzian, shear, out-of-phase bending …” „… multiaxialfatigue tests under proportional and non-proportional stresses, it achieved an average fatigue error …” „… indexof -2.2% and a standard deviation of the fatigue error index of 15.9%.2 Material and MethodsSimilar …”

L. Bonaiti, F. Rosa, P. Mahendra Rao, C. Gorla, F. Concli Gear root bending strength: statistical treatment of single tooth bending fatigue tests results S. 15-30

„… anvils during the preliminary mounting phase. During the test, the pin is removed, and a minimum …” „… (3) where ??? is the error function. MLE is based on finding the distribution parameters, in this …”

doi.org/10.51202/9783181023891

VDI Wissensforum GmbH - International Conference on Gears 2017

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VDI Wissensforum GmbH (ed.)

International Conference on Gears 2017

Series: VDI-Berichte

Volume 2294 2017

Results in this title

K. Matsuo, Y. Suzuki, K. Fujiki Accuracy analysis of workpiece and tool in the hobbing process using Taguchi Method S. 1331-1342

„… right end run-out are in opposite phase), the effect on cumulative pitch error of the right and left …” „… 135 Right flank deg. 0 45 90 135 180 225 270 315 c mm -73.8 0 73.75 Error factor a b Phase difference …” „… than in grinding, it is more difficult to eliminate the pitch error and tooth space run-out that …”

H. Hansson, H. Alm, A. Eng, M. Olsson Beveloid gears in planetary gear trains for increased Grundström, power density and reduced backlash Stensson, S. 579-590

„… identical loads (not considering phase difference between the planets), Fig. 3. When an error is introduced …” „… general the uneven load distribution introduced due to manufacturing and assembly errors increases with …” „… order to neutralize manufacturing and assembly errors [5]. In order to evaluate the balancing system …”

T. Utakapan, B. Kohn, M. Fromberger, M. Otto, K. Stahl Evaluation of gear noise behaviour with application force level S. 695-706

„… undesired noise is one of the most important goals throughout the whole development phases of gearboxes …” „… Source Dimension Quasi-static Loaded Transmission Error Calculation / Assessment Displacement Tooth …” „… Error Calculation / Assessment Displacement Torsional Acceleration Assessment Acceleration …”

M. Shuai, M. Shuai, J. Guoguang, Z. Yidu, L. Chao, H. Haruo Research on multiple-split load sharing characteristics of 2-stage external meshing star gearing system S. 769-782

„… , the phase taken 0.25°. Tooth thickness, pitch section and bearing error are also take 6μm, Ks1p= Kps2 …” „… external gearing star gearing system in Aero-engine, and a meshing error analysis on the eccentricity …” „… error, gear thickness error, base pitch error, assembly error, and bearing manufacturing error of gear …”

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

„… planetary gears multi-degree-of-freedom modelling is built. Eigenmodes, dynamic transmission errors and …” „… the dynamic behaviour of the gears induced by the static transmission errors. These main excitation …” „… sources at each gear meshing result from tooth deflections and manufacturing errors. In the context of …”

T. Nagumo, M. Ishizuka, Y. Satou, S. Matsumura, H. Houjoh Estimation of loaded static transmission error using vibration measurement under operating conditions in a two-stage helical gear reducer S. 857-868

„… Estimation of loaded static transmission error using vibration measurement under operating …” „… transmission error (STE) waveform by vibration measurement under operating conditions was applied to a …” „… [1,2]. The loaded static transmission error (STE) is widely used for evaluating gear mesh excitation …”

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

„… misalignments on dynamic transmission errors (DTE) and dynamic responses are studied based on the proposed …” „… dynamic model. Keywords：mesh misalignment, planetary gear set, transmission error, dynamic factor 1 …” „… of manufacturing errors and assembly variations on dynamic load sharing factor [1]. Velex proposed a …”

X. Gou, L. Zhu, C. Qi Modelling of a gear-rotor system considered tooth contact temperature and its dynamic characteristics S. 1177-1184

„… friction, the backlash, the comprehensive transmission error and so on are considered. The flash …” „… time-varying stiffness including temperature stiffness, gear backlash and comprehensive transmission error are …” „… represent gear clearance. 2 . ( )e t is the time-varying comprehensive transmission error of the gear pair …”

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

„… . Traditionally the transmission error TE is used to judge the impact of a gear train on the noise behavior. It …” „… ) is chosen to exemplify the different influence factors affecting the transmission error. The noise …” „… influence factors at the transmission error and to check the correlation between TE and the noise of the …”

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

„… total pitch error of each planetary stage as well as the stiffness variation in the gear meshes (Figure …” „… mesh, plays an important role for the total pitch error. Finally, a proper micro geometry is useful to …” „… Production Already during the prototype development phase design for manufacturing was an attention point …”

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

„… thermodynamically-based diffusion and phase transformation models allow heat specific chemical compositions to be …” „… as thermal driving force for phase transformations, depends on the thermo-physical properties …” „… thermal conductivity λ, density ρ, and specific heat capacity cp which themselves depend on the phase ξ …”

M. Takahashi, T. Itagaki, N. Maeda, H. Takahashi Evaluation of developed micro-gear endurance test system and basic study on load-carrying characteristics of micro-spur-gears S. 243-252

„… tolerance. The first phase of this study used two types of module 0.2 mm test gears: gears made from …” „… the θz direction. Measurement and adjustment of assembly errors in the test gear can be performed …” „… measured assembly errors can be easily adjusted by using the 3dimensional Cartesian stage, θz stage and θY …”

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