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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

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

„… IntroductionThe helicopter transmission system will generate complex vibrations during operation. If the …” „… parameters of transmission system are not designed properly, it will lead to excessive vibration amplitude …” „… and serious alternating loads. Compared with the vibration in other directions of the transmission …”

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

„… market. Since electrical engine operation generate much less vibration, the noise in the passenger …” „… of excitation produced by the gear will be the key factor. Traditionally the transmission error is …” „… used to judge the impact of a gear train on the noise behavior. A high Transmission error results in a …”

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

„… design characteristics in modern transmissions. The most efficient way to achieve beneficial noise …” „… transmission error (LTE) is typically used as specific value to evaluate the effect of these flank forms on the …” „… continue to increase, the NVH performance of transmissions faces new challenges. Increasing speeds lead to …”

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

„… transmission and increase the vibration and noise of gear transmission. Therefore, a novel dynamic model is …” „… systemGear body deformationBearing stiffness and dampingThe reduced-order FEM ofgear transmissionGear body …” „… A Novel Dynamic Modeling Method of High-Speed Thin-Rimmed Gear Transmission Ph.D student Jiayu …”

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

„… Eigenmoden. Abstract Transmission noise plays a key role in electromobility design. The inability to mask …” „… and manufacturing. Transmission error has the greatest influence on gear noise. This is a result of …” „… optimizing the transmission error, it is possible to reduce the structural excitation and, consequently, the …”

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

„… transmission and housing and is capable to investigate arbitrarily excited vibrations. The different …” „… , Germany 1. Introduction and motivation NVH evaluations – Noise, vibration, and harshness – of …” „… transmissions are meanwhile state of the art and are requested for many applications. For the analysis of …”

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

„… Vibration reduction of planetary gear drive using mesh phasing: modelling and experimental …” „… concept phase of a planetary gear set can help reduce the transmitted vibrations to the rest of the system …” „… developed, including planetary gears, bearings, shafts, splines, and housing structure. The vibration level …”

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

„… gearbox design. It is known that the power transmission process leads to an internal vibration excitation …” „… subsequent transmission to the housing produces two decisive vibration outputs: the radiation of air-borne …” „… transmission process of the mating gear teeth induces all forced vibrations as an internal excitation component …”

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

„… characteristics of gear transmission system. Journal of Low Frequency Noise. Vibration and Active Control, Vol. 33 …” „… condition for vibration characteristics of a light-loaded spur gear pair was presented in [2]. It was …” „… observed that the induced vibrations of the model with non-linear damping are much greater than the model …”

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

„… meshing represents a significant source of vibration excitation in gear units and shapes their acoustic …” „… commercially available MBS software allow for the calculation of vibration response at various locations on …” „… . The gear unit with 6450 Nm nominal torque and transmission ratio of i = 13.47 represents the smallest …”

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

„… been built. The model has been correlated to measurement on the basis of vibration and acoustics …” „… reduce the transmission error (static and dynamic). Proposed modifications have been implemented in a …” „… volt; 130Nm at rear axle, 90% peak efficiency Transmission -7 speed automatic gear-box (450% range …”

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

„… vibrations as they house many rotating components. The gear transmission VDI-Berichte Nr. 2422, 2023 689error …” „… Numerical analysis of bevel gear transmission acoustic emission using a 3D gear contact force model …” „… run-up configurations and analyzed. The resulting gearbox housing vibrations, computed by the multibody …”

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

„… transmission of motion and the one actually achieved. It is proven that TE is the principal source of vibration …” „… The effect of working surface deviation on transmission error in helical gears Ph. D. Candidate …” „… . Abstract Transmission error (TE) of the gear system describes the difference between the perfect kinematic …”

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

„… Using Loaded Transmission Error, Journal of Sound and Vibration125(1), 71-83. [4] Özgüven H.N., (1989 …” „… variation during operation This variation of the spring characteristics in time and transmission errors are …” „… is another reason for the vibrations in the system and as a result of the additional dynamic forces …”

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

„… Optimization of product quality and manufacturing processes in real-time with vibration analysis …” „… based on vibration analysis is one effective method. This paper describes challenges in real-time …” „… transmission. To avoid unwanted noise, extreme precision is important in manufacturing transmission gears to …”

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

„… the global dynamic behaviour of transmissions including the internal displacements and stresses in …” „… vibrations after impact. Virlez & al. [19-20] used a model reduction combined with an advanced contact model …” „… approach and make it possible to clarify some of the characteristics of vibrations in gears with highly …”

N. Fujimura Application-oriented research on internal generating polishing S. 1863-1876

„… surfaces. (2) Possibility of transmission efficiency increase and better NVH (Noise Vibration and Harshness …” „… process enables significant noise, vibration and harshness improvements in EV transmissions, technical …” „… bessere NVH-Leistung (Noise Vibration and Harshness). Die Verbesserung der Lebensdauer ist die …”

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

„… vibration in a geared transmission system is the gear pair. Its mesh stiffness fluctuations excite the …” „… fluctuations, dynamic transmission error as well as gear noise level is found. Integer overlap ratio gears …” „… entire system. The generated vibration energy passes through the shafts and bearings to then reach the …”

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

„… der TE Messung ab. Abstract Gear transmission error (TE) is the main contributor to gear vibration …” „… Assessing gear mesh misalignment in a parallel gear set by transmission error measurements M. Sc …” „… desirable. This article demonstrates, based on two practical examples, how transmission error measurements …”

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

„… Systems (CMS) based on vibration sensors. However, these systems are only developing their full potential …” „… , speed and vibration sensors. The experiments are statistically designed by means of Design of …” „… data. Using machine learning approaches, the vibration signal data are analyzed. By means of anomaly …”

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

„… Design and analysis of compound stepped planetary gear drives for better transmission performances …” „… . The influences of the different combinations of tooth numbers on the transmission errors and load …” „… smallest transmission error and evener load sharing is that the planets mesh with the sun gear in phase and …”

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

„… proposed. For example, because measuring vibration with accelerometers is easy to install, many researchers …” „… have studied methods for collecting and analyzing vibration data from meshing gears [1]-[3]. However …” „… difficult.For this reason, sensors are installed on the surface of the case of transmissions or on other parts …”

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 …” „… under load and manufacturing errors imply a not constant transmission ratio. This aspect is also …”

C. Kirchhoff, P. Tenberge Optimization of the vibrational behavior of ZI crossed helical gears with a plastic wheel and a steel worm S. 1419-1434

„… extent, so that a transmission error also occurs periodically, which induces vibrations in the gearbox …” „… such secondary drives because they allow a high transmission ratio in a compactly built gearbox stage …” „… transmission behavior and the tooth stiffness of crossed-helical gears fully automatically with steel worm and …”

L. Braumann, H. Amri, V. S. Viteri, J. Ochoa LUBGEAR – Experimental Campaign for Aviation Gears in Loss-of- Lubrication S. 1063-1070

„… Zahnraddesign für beschichtete Zahnräder in LOL definiert. Abstract Transmission systems in the aviation …” „… necessary design adaptations for coated gears in LOL are discussed. Introduction Transmission systems for …” „… transmissions or geared turbofans must withstand considerable torques while operating at high rotational speeds …”

Titelei/Inhaltsverzeichnis

„… Power Transmission Research Laboratory, Departmentof Mechanical and Aerospace Engineering, The Ohio …” „… factor of planetary gear transmissions affected by inherent manufacturing errors 139J. Sanchez-Espiga, A …” „… mesh misalignment in a parallel gear set by transmission error measurements 291N. De Bie, W. Smet, T …”

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

„… fulfillment of the requested lifetime. But low vibration/noise behavior or low power loss may be as important …” „… wants the modifications as defined, e.g. especially for low-vibration gear sizing for EV applications …” „… waviness on the tooth flank is, or can be, the cause of vibration [4]. On the other hand, it has also been …”

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

„… displacement behavior the transmission error and the displacements of different components can be measured. The …” „… flank pressures and an increase in the total transmission error. Acknowledgement Funded by the Deutsche …” „… coaxial alignment of the input and output shafts as well as the comparatively high transmission ratio and …”

I. Gonzalez-Perez, A. Fuentes-Aznar Improvement of the transmission efficiency in electric vehicles by using double staggered helical gears with shortened teeth S. 1083-1090

„… Electric vehicles require transmissions with high efficiency, low levels of noise and vibration and high …” „… Improvement of the transmission efficiency in electric vehicles by using double staggered helical …” „… contacting tooth surfaces for all the geometries. Several two-stage gear transmissions are analyzed and …”

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

„… the gears meshing to the shaft, through the bearings to the housing. The vibration of the housing is …” „… results in angular and speed fluctuations called transmission error. Deviations originate in geometrical …” „… influenced by surrounding machines and vibrations, which interfere with the measurement. The shown evaluation …”

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

„… Challenges and possibilities of virtual development of e-axle transmissionsSPH-Simulation with …” „… on the transmission and the related cooling and lubrication system. In addition, cost pressure is …” „… . Optimizing the oil flow via transparent transmissions is costly and only leads to limited insights regarding …”

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

„… achieve less-noise gear train production is becoming more stringent. To minimize the gear vibrations, most …” „… various key aspects such as transmission error, bearing forces together with gear tooth stress levels, and …” „… ), efficiency, and transmission errors to draw optimal gear teeth under system deflections. For this, it is …”

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

„… main components of transmission should be inspected in each process of design, manufacturing …” „… precision gearboxes or transmissions by using the assembly/grouped methodologies and recording the operating …” „… such as runout caused by eccentric, thermal effects, deflections, vibration. Whereas, the constant …”

T. König, L. Cadau, L. Steidle, M. Kley, D. Cansu Güney, J. Albrecht, K. Weber A concept for comparison of new and aged lubricants in transmissions of electric vehicles and a method of oil aging on a test rig S. 1195-1206

„… A concept for comparison of new and aged lubricants in transmissions of electric vehicles and a …” „… environmentally friendly, there is the possibility to replace conventional transmission oils with sustainable …” „… instance, the typical map of an electric machine requires different transmission designs. [2, 3] In …”

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

„… variations plus the intrinsic run-out of a pinion and its mating gear results in a total transmission error …” „… . The total transmission is defined as the difference between the actual position of the output gear and …” „… variations in this transmission error are, the higher the local air wave pressure will change and the higher …”

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

„… Minimizing NVH and friction-induced power losses is becoming paramount in the design of geared transmissions …” „… , whereas the NVH level is measured by the loaded transmission error (LTE), directly available from the …” „… reliability in power VDI-Berichte Nr. 2422, 2023 853transmission. Nevertheless, the deployment of spiral bevel …”

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

„… calculation of gearboxes with a constant transmission ratio, a parameter radius ratio is developed. For this …” „… an optimal power transmission can be achieved regarding the technical properties. The procedure is …” „… correspond to a linear transmission function from gear 1 to gear 2. Another boundary condition is the integer …”

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

„… acquisition during test highlighted a relevant increase of the overall vibration field associated to the …” „… normative for civil helicopters, the failure of the lubrication system of a power transmission unit should …” „… order to effectively optimise the performance of the transmission, a mind-set change is required: the …”

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

„… integrated long-term measurement system. Values like speed, torque and vibration have been measured over …” „… components, vibration measuring tasks are running on the measuring device. The vibration measurement is …” „… constantly trending the VDI-Berichte Nr. 2422, 2023 647individual vibration behaviour of the gearbox …”

K. Suzuki, K. Sakai, K. Sakai, T. Hara Considerations on Lubrication of High-Speed Rotating Gear (First Report) S. 741-752

„… transmission and 4WD transfer case, and has started mass production of hybrid (hereafter HEV) gearbox in 2005 …” „… lubricationmethodMultispeed gear shifting Shifting gears mechanismVibration Damping ControlReduction of tooth …” „… impactvelocityVibration Mode ControlI/O DampingFig.1: Gearbox Performance Requirements and Elemental Technology Challenges …”

T. Schmidt, B. Neubauer, D. Merk White Etching Cracks (WECs) on gears of E-Axle applications S. 257-268

„… on a test rig and failed due to vibration noise after ca. 50% of lifetime, caused by six pittings …” „… compared to oils in manual transmissions in the last 20 years. High requirements for efficiency in …” „… was carried out due to low-viscosity transmission oils, which presented a high risk of inducing these …”

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

„… shape and vibration test for a new transmission helical gear composed of steel and aramid/phenol …” „… . IntroductionMetallic gears are widely used in power transmissions due to their high strength and reliability. They …” „… ( ) with the increase of the number of teeth. It should be mentioned that the effect of the transmission …”

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

„… Characteristics of Transmission Planetary Gear Sets: Model and Experiment. SAE Transactions 108, 1954–1963. [7 …” „… ] Singh A, Kahraman A, Ligata H (2008) Internal Gear Strains and Load Sharing in Planetary Transmissions …” „… gearboxes with respect to load distribution and noise and vibrations. In International Conference on Gears …”

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

„… properties. Due to high power density and good efficiency at high transmission ratios, planetary gearboxes …” „… . (2017). Vibration signal analysis for the lifetime-prediction and failure detection of future turbofan …” „… automotive transmissions, Berlin. [3] Hinterstoißer, M., 2014, Zur Optimierung des Wirkungsgrades von …”

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

„… as lightweight nature, ease of manufacturing, affordability, minimal noise and vibration, ability to …” „… Material 100Cr6 Delrin 500P Normal module, mm 0.8 Number of teeth 17 22 Helix angle,° 0 0 Transmission …”

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

„… transmissions, Mechanism and Machine Theory. 133 (2019) 195–210. https://doi.org/10.1016/j.mechmachtheory …” „… , Vibration-based plastic-gear crack detection system using a convolutional neural network - Robust evaluation and …”

doi.org/10.51202/9783181024225

VDI Wissensforum GmbH - International Conference on Gears 2022

No access

Select

VDI Wissensforum GmbH (ed.)

International Conference on Gears 2022

Series: VDI-Berichte

Volume 2389 2022

Results in this title

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

„… vibration and avoid the gear traveling wave resonance in high-speed transmission. Relevant comparisons …” „… transmission. Another path to reduce the noise and vibration is the methodology in damping ring design which is …” „… vibration and avoid the gear traveling wave resonance in high-speed transmission. Relevant comparisons …”

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

„… transmission system with the measured load as the input and determined that “the largest vibration is the gear …” „… , operating speed, and acceleration on the natural vibration characteristics of the cutting transmission …” „… excitation. The transmission system generated a transient-free vibration after being excited by an impact …”

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

„… gear transmission by finite elements: model and experiment”, ASME Journal of Vibration and Acoustics …” „… geared systems by transmission errors”, Journal of Sound and Vibration, 290(2006) pp.882-909. [14] Velex …” „… Influence of thin rimmed/-webbed gears on transmission dynamic behaviour – Approximate dynamic …”

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

„… ] Mohammadpour, M., Theodossiades, S., Rahnejat, H., Kelly, P.: Transmission efficiency and noise, vibration and …” „… 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 …”

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

„… Enhanced damage classification on transmissions by generating synthetic data withGenerative …” „… Condition monitoring of transmissions and drive systems is becoming an increasingly important part in many …” „… operating behaviour are required for electromechanical drive systems. Transmissions installed in drive …”

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

„… generation of gearboxes is mainly referred to the characteristic transmission process of the mating gear …” „… vibration quality. As a result, the complex circumstances in the gear mesh require specific considerations …” „… during power transmission cycles. 1. Introduction The noise characteristics of gearboxes are an …”

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

„… impacts of meshing gear pairs under vibration excitation and the gear transmission thus generates lower …” „… without torsional vibration excitation and with 1,500 rad/s2 modulation on the transmission input shaft. A …” „… ingncremental encoderSingle-stage transmissionMachi frameAir suspension elem nAcoustic sound liningi i i Fig. 5 …”

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

„… of Excitations in Geared Systems by Transmission Errors,” Journal of Sound and Vibration, 290(3), p …” „… Lokaditya Ryali, David Talbot, Gear and Power Transmission Research Laboratory The Ohio State University …” „… planetary gear system makes them susceptible to noise and vibration issues. An exhaustive and rich …”

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

„… point-contact. 2. Transmission error Soft gear noise and vibration during operation is very important factor in …” „… . Transmission error Soft gear noise and vibration during operation is very important factor in practical usage …” „… transmission error, wave form and the spectrum Fig.4 Improvement of geometrical gear dimension vibration …”

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

„… involute gear trains is based on an order analysis of the system vibrations and an associated method is to …” „… vibration and an associated method is to measure acoustic emissions. Furthermore, the temperature may be …” „… , 3, 9]. Loaded transmission error The meshing of two gears can be described as spring and damper …”

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

„… by transmission errors, Journal of Sound and Vibration, 290 (2006) pp. 882-909 [14] M. Kubur, A …” „… Transmission Research assistant Aiqiang Zhang, State Key Laboratory of Mechanical Transmissions, Chongqing …” „… , most components in aviation transmission, including casing and shafting, are designed as irregular …”

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

„… transmission error and vibration. The same wire cut pinion made out of 100Cr6 steel, flanks hardened to HRC 55 …” „… significantly higher transmission error and more vibrations compared to the spline contour. An increase in mould …” „… monitoring test rigs sensor data, like acoustic or mechanical vibrations are recorded and the corresponding …”

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

„… unwanted noise and vibration. It is especially sensitive on e-axle transmissions which rely on fewer …” „… Abstract Planetary gear systems continue to be the focus in new transmission developments and are the …” „… elements than conventional combustion engine transmissions. Internal generating gear grinding is one …”

K. Lubke, H. Rohr Quality inspection of common step gearings – Overview of different types and their assessment S. 959-968

„… based on the given transmission law. It must follow some design principles especially jerks must be …” „… transmission laws e.g. linear laws, modified sinoid laws or 5th grade polynomic laws. Due to the heavy weight …” „… theoretical cam surface, backlash of the followers in the tracks, determination of the actual transmission law …”

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

„… trained from training data extracted from plastic gears' raw vibration data using the Fourier …” „… and working accuracy. If plastic gear can replace metal gear in transmissions, the condition …” „… . Fig. 1: The prognostic framework 3. Experimental works 3.1. Vibration data acquisition The …”

F. Thurner Light into the black box: using AI software to identify unknown mechanisms of action and resolve acoustic/NVH problems – practical example of a passenger car powertrain S. 779-786

„… comfort in vehicles. The cause is often the gearing in the transmissions. Due to the large number of …” „… identify the causes of the problem, especially since they only occurred in some transmission boxes and all …” „… dynamometer or an operational vibration shape analysis also help to determine the best positions for airborne …”

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

„… evaluate the influence of speeds under consideration of the vibration characteristics of the system. 2 …” „… to exclude data transmission errors of the telemetry. The zero-torque offset value, derived from the …” „… above 6800 rpm for the 1st and 3rd mesh order with increased vibration amplitudes in the gear mesh …”

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

„… transmission with a variable ratio during flight is necessary. TU Munich, TU Wien and Zoerkler Gears work in …” „… / variable rotor speed” that consists of a transmission with variable ratio and a rotor system with rotor …” „… speed via change of the ratio of the transmission (variable rotor speed with constant turbine speed …”

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

„… Resonance C. Alper Celikay, Ata Donmez, Ahmet Kahraman, Gear and Power Transmission Research Laboratory The …” „… stiffness. If the vibration conditions are such that the dynamic mesh force amplitudes exceed the static …” „… conventional transmission applications. In view of the push towards higher speed gear sets for electrified …”

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

„… a giant cargo ship. The outstanding role of gear is that it participates in the power transmission …” „… targeted object for the analyzing process. Among of these methods, vibration analysis can be considered the …” „… technique, the data for the vibration-based method are simpler to be collected. Thanks to the accelerometers …”

A. L. Kapelevich, Y. V. Shekhtman Parametric study of hypocycloidal involute gears S. 433-444

„… the mating gears to the next, leading to a high transmission error variation, increased noise and …” „… vibration, or in some cases complete tooth disengagement. However, in internal gears with a low tooth …” „… . Transmission error is the angular difference between the actual position of the driven gear and its ideal …”

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

„… Gear design optimization for multi-mesh and multi-power flow transmissions under a broad torque …” „… transmission architectures are becoming more diverse to accommodate various types of new vehicle powertrains …” „… in the standards and gear handbooks, the design outcome to increase transmission performances at a …”

S. Oberle, V. Labriola, E. Melnikov, G. Gariglio High performance plastic gear solution in the engine environment S. 1033-1044

„… gears due to exposition to high temperatures, high vibrations (>30g), intensive dynamic load levels …” „… involving a very complex VDI-Berichte Nr. 2389, 20221034vibrational system. Vibrations created by the …” „… balancing of those forces is to reach the following benefits: - Lower vibrations transmitted by the ICE to …”

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

„… Practical application of asymmetric tooth root geometry for downsizing automotive transmission …” „… , Shizuoka, Japan Abstract Failure modes of automotive transmission gears can be largely divided into …” „… transmissions has been required in recent years from the standpoints of improving vehicle fuel economy and …”

B. Reetz, T. Munch, W. Kappeler Challenges for lead-free brass alloys in worm gears S. 1467-1488

„… loads, e.g. resulting from vibrations. The pitch angles of standard gears are too high for self-locking …” „… choice a worm gear set are - Low vibration - Low noise level - Insensitivity to load bumps - Power and …” „… situation the Fig. 23: Worm gear load capacity for different values of transmission ration [28] Fig. 22 …”

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

„… between NVH-performance of transmissions, gear quality /-costs, technology and process in gear …” „… currently experiencing a monumental shift towards electrification. Transmission for e-vehicles have usually …” „… about 1/3 of the gears of a classic 5 to 10 speed combustion transmission. Almost one decade ago, the …”

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

„… , which will reduce the flank accuracy, cause problems such as the increasing the side backlash, vibration …” „… , shock and working noise, and the decreasing transmission accuracy. As a result, it is necessary to …” „… and transmission performance. In summary, gear modification can significantly optimize the stress …”

K. Yanagisawa, A. Weinmann Weight and cost reduction potentials with high performance polymers for gears S. 1019-1032

„… smallest transmission error, and highest root safety. This circumstance allows more flexibility in the …” „… amount of devi-ation, and the deviation of rotational speed excites vibration of gear and causes noise …”

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

„… . This results in a stiffness discontinuity for the entire system of the tooth contact. The transmission …” „… . 3, right, blue graph). The absence of the bumps for the load free transmission error (black graph …” „… difference can lead to a worse convergence behaviour of the MBS solver and could result in phantom vibrations …”

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

„… Calvo–Irisarri, Dr.-Eng. Miryam B. Sánchez, Eng. Alfredo Fernández–Sisón, Gamesa Energy Transmission – SGRE ON …” „… related to noise and vibration lev-els. VDI-Berichte Nr. 2389, 2022 715The final design should ensure high …” „… 2019-110996RB-I00 “Simulation and control of transmission error of cylindric gears”, as well as the School of …”

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

„… Abstract In order to respond to a shortened development time of today's transmission systems, the …” „… into the development process. Particularly thanks to the many years of development of transmission …” „… address the complexity of today's transmission systems adequately. Some commercial program systems …”

F. Reinle, D. Mangherini, E. Morgano, A. Bongiovanni Combining improved gear efficiency and improved fatigue performance through mass finishing S. 609-620

„… transmissions containing a relatively low sulphur content. The kinematic viscosity is at 33.3 mm²/s at 40 °C and …” „… , derivation and vibration. Scattered light is based on angular measurements and can therefore carry out the …”

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

„… . Introduction and motivation Transmission components must be made lighter and more efficient [1, 2]. Spur gears …” „… ]. A high degree of efficiency in power transmission and, at the same time, a high power density of the …” „… to the practical needs [18]. The flash temperature method tends to be used in turbo transmission …”

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

„… pronounced vibration stress, which results in a fatigue fracture, i.e. damage that only occurs after several …” „… transmission with an integrated ball screw. Two exciter magnets represent the dynamic drive. One is located at …”

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

„… , Kelsen E., DeLuca, Samuel, Pelagalli, Ryan, Vibration and Operational Characteristics of a …” „… polymers for use in polymer gear transmissions, Polymer Testing. 93 (2021) 106994. [16] B. Černe, M …”

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

„… Isaac Hong, Zach Teaford, Ahmet Kahraman, Gear and Power Transmission Research Laboratory, Department …” „… bending fatigue failures are instantaneously catastrophic to gear drive power transmission systems. For …” „… critical to the safe operation of power transmission systems they are used in. Long life of these …”

J. Koenig, D. Kehle, K.-P. Heinzle Investigation of the failure mechanisms of plastic materials with and without fiber reinforcement S. 1269-1280

„… steel gears, such as lighter weight, less vibration, noise reduction and high resistance towards …” „… the Teeth of Plastic Gears. San Francisco : Internat. Power Transmission & Gearing Conference 1980 [17 …”

doi.org/10.51202/9783181023891

VDI Wissensforum GmbH - Schwingungen 2023

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Schwingungen 2023

Series: VDI-Berichte

Volume 2429 2023

Results in this title

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

„… transmission structure with the transmission shaft vibration and considers different mesh stiffness …” „… separate subsystem on the input drive shaft. Vibrations on the transmission housing caused by the rotation …” „… force sensor to generate the damped signal. Figure 9: Modeling of the vibrations at the transmission …”

C. Schulz, B. Kieß, H. Graneß Einfluss der Modellierungsstrategie des Zahnfußes auf den Drehwegfehler S. 57-70

„… gear dynamics, vibrations and acoustics, the gear transmission error (TE) is a reliable value to …” „… Modellierungsstrategie des Zahnfußes auf den DrehwegfehlerInfluence of the tooth root area on the static transmission …” „… therefore investigates the influence of the tooth root area on the static transmission error (STE) by …”

doi.org/10.51202/9783181024294

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Dritev 2022

Series: VDI-Berichte

Volume 2401 2022

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K. Lee, M. Song, S. Lim Multi-body Dynamics of a Vehicle Axle System Based on a Time-varying Gear Mesh Model for Investigating Hypoid Gear Noise and Vibration S. 185-196

„… . Penn-sylvania, June 8-10, 1987. [3] Cheng Y.; Lim T. C.: Vibration analysis of hypoid transmissions applying an …” „… Investigating Hypoid Gear Noise and Vibration M. Eng. Kibok Lee, Myeongeui Song, B. Eng. Seungeon Lim …” „… the automotive axle system to cover the practical gear mesh excitation mechanisms and the vibration …”

P. He, A. Eßer, S. Rinderknecht, M. Schmiedt A Degradation Model of a Wet Friction Clutch based on Theoretical and Experimental Analysis and the Application for a Condition Monitoring Method S. 303-320

„… analyzed the friction vibrations in the clutch. It is well known that the coefficient of friction (CoF …” „… vibration amplitude and system stability. However, the investigations are based on idealized experimental …” „… neg-ative correlation between the CoF-gradient and the vibration amplitude of the sliding speed of the …”

F. Lagier, N. Freund, K. Bause, S. Ott, A. Albers Simulation-based evaluation of high-speed PEEK gears in automotive powertrains and design of a validation environment for high-speed gears S. 223-240

„… high-revving traction engines and shiftable transmissions that enable downsizing of the electric motor. Such a …” „… increasing engine speed and despite the resulting need for a transmission. Further potential for saving …” „… automotive high-speed transmissions and present comparisons to reference drivelines. For this purpose …”

F. Pfister, N. Hetzel, K. Büttner Objectified Evaluation of Fundamental Driveability Maneuvers at Powertrain-in-the-Loop Testbeds for Electric Drive Units S. 61-72

„… 10 to 100 times faster. Additionally, the mechanical transmission path from the motor to the wheel is …” „… mechanical transmission from the motor to the tire is significantly stiffer. The longitudinal forces …” „… transmission via the tire to the road (tire physics). The brand-specific vehicle DNA can thus be defined …”

T. Skubacz, C. Burkhardt, S. Krischke Proof of Concept: Bistable Shift Element S. 241-252

„… powertrain parts. The shifting elements either realise different load paths, e.g. transmission paths, or …” „… transmission Rotating, quasi-static Torque transmission tests were carried out on an axle/gearbox test bench …” „… fluctuations and vibrations in the drive and the drive train. For this purpose, the electrodynamic testing …”

J. Merckling Use of Power-Dense Fuel-Efficient Tapered Roller Bearings in E-Drives under Low-Viscosity Oil and High-Speed Conditions S. 153-168

„… speeds compared to traditional axles and transmissions. Typically, ball bearings are used due to their …” „… initiative, The Timken Company began work on FE TRBs for electric vehicle (EV) transmissions. All the …” „… engine axles and transmission applications. Some of this experience is in sport or prestige cars that …”

M. Hein, S. Prinke, A. Damm, P. Fischer Testing of shift elements – Standardized Methods, State of the Art and Future Challenges S. 73-94

„… Synchronizers are key elements in modern Dual-Clutch (DCT) or Manual (MT) Transmissions. They enable the easy …” „… applications, such as powershifting in DCT or Automatic Transmission (AT), permanent slipping in …” „… a manual transmission and up to > 500.000 for a DCT or even more for CV. The load spectra applied to …”

G. Göppert, M. Adrian AI Approach to Wet Friction Torque Model Adaptation S. 321-334

„… friction effect depending on engine or exter-nal vibrations, transferred torque and slip is overlayed …” „… transmission control units. VDI-Berichte Nr. 2401, 2022324Future control units, on the other hand, will be much …”

doi.org/10.51202/9783181024010

VDI Wissensforum GmbH - SIMVEC Simulation und Erprobung in der Fahrzeugentwicklung 2016

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SIMVEC Simulation und Erprobung in der Fahrzeugentwicklung 2016

Series: VDI-Berichte

Volume 2279 2016

Results in this title

K. Pfeiffer, R. Merl NVH Kalibration auf einem Powertrain-In-The-Loop Prüfstand S. 833-848

„… sources of vibration and noise in a powertrain are many, including the combustion engine, transmission …” „… vibration excitation for transmission rattle evaluation. All test cell components are covered with high …” „… perfect for powertrain and transmission noise investigations. It has deficits for powertrain vibration …”

F. Schneider, V. Saxena, A. Moser System Simulation and Verification of an Innovative Active Torsional Vibrational Absorber for Engine Cylinder Deactivation, Down Speeding & Best Comfort S. 481-490

„… , Dipl. Ing. A. Moser, BorgWarner Transmission Systems, Ketsch Summary Vehicle powertrains are …” „… same drive train. In this paper we present our highly innovative active torsional vibration absorber …” „… development raise new challenges for torsional vibration damping. Dual mass flywheels (DMF), located between …”

H. Baum, E. Pasquini Druckschwingungsanalyse von Leitungssystemen mit viskoelastischem Materialverhalten der Rohrwand – Modellsynthese und messtechnische Ermittlung der Modellparameter S. 467-480

„… viscoelastic material properties into account are required. Since the pressure vibration simulation is …” „… ] Tao, Z.; Seybert, A. F.: A Review of Current Techniques for Measuring Muffler Transmission Loss, 03 …”

doi.org/10.51202/9783181022795

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