Results 221 to 230 of about 2,188 (260)

Effect of Backlash on Transmission Error and Time Varying Mesh Stiffness

2021
Gears suffer by unavoidable time-varying mesh stiffness. Noise and vibrations amplitudes show the transmission error occurred within the components of power transmission error. The Gear Trax software has been used to model the gear with different amounts of backlash (from 0 mm to 1 mm by 0.2 mm increments) so that this gives a backlash due to the ...
Getachew A. Ambaye, Hirpa G. Lemu
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Influences of friction and mesh misalignment on time-varying mesh stiffness of helical gears

Journal of Mechanical Science and Technology, 2017
As one of the most important excitation sources of vibration, time-varying mesh stiffness of helical gear pairs need accurately calculated. Compared with spur gears, friction in helical gears is significant. This work for the first time presents an improved calculation method for the mesh stiffness of helical gears with effect of friction incorporated.
Lin Han, Lixin Xu, Houjun Qi
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Time-varying mesh stiffness calculation of cracked spur gears

Engineering Failure Analysis, 2014
Abstract Considering the misalignment of gear root circle and base circle and accurate transition curve, an improved mesh stiffness model for a healthy gear pair is proposed and validated by the finite element method (FEM). Based on the improved method, three mesh stiffness calculation methods (method 1: straight lines for crack path and limiting ...
Hui Ma, Rongze Song, Xu Pang, Bangchun Wen   +3 more
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Improved time-varying mesh stiffness model of cracked spur gears

Engineering Failure Analysis, 2015
Abstract Based on our previous work (Ma et al., 2014, Engineering Failure Analysis , 44, 179–194), this paper presents an improved analytical model (IAM) for the time-varying mesh stiffness (TVMS) calculation of cracked spur gears. In the improved analytical model, the calculation error of TVMS under double-tooth engagement due to repeatedly ...
Hui Ma, Xu Pang, Ranjiao Feng, Jin Zeng, Bangchun Wen   +4 more
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Parametric vibration of split gears induced by time-varying mesh stiffness

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2014
Time-varying mesh stiffness is a significant excitation source within gear systems. Split gear (or laminated gear, phase gear) is an interesting design using equally phased gear-slices, which can remarkably reduce the mesh stiffness fluctuation like helical gears but completely avoid the axial force.
Dongsheng Zhang, Shiyu Wang
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Calculation of Time-Varying Mesh Stiffness Affected by Load Based on FEM

Volume 10: 2017 ASME International Power Transmission and Gearing Conference, 2017
Time-varying mesh stiffness (TVMS) is a key component of gear transmission system for gear dynamic response. When the machine starts working, stop working or goes into an unstable working condition, the load will be varying. In order to investigate the impact of different loads on TVMS, a numerical method based on FEM is proposed in this paper to study
Qian Cheng, Yimin Shao, Jing Liu, Lei Yin, Minggang Du, Yang Yang   +5 more
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Parametric Instability in Planetary Gears With Frequency-Modulated Time-Varying Mesh Stiffness

Volume 8: 26th Conference on Mechanical Vibration and Noise, 2014
A rotational model of planetary gears is developed which incorporates mesh stiffness variation and input speed fluctuations. Gear mesh stiffness is approximated by rectangle wave and different harmonic orders are considered. Because of speed fluctuations, the mesh stiffness is frequency modulated.
Xinghui Qiu, Qinkai Han, Fulei Chu
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A general contact stiffness model for elastic bodies and its application in time-varying mesh stiffness of gear drive

Mathematics and Mechanics of Solids, 2022
As a critical element of time-varying mesh stiffness (TVMS), contact stiffness of a gear drive has been defined based on simplified Hertzian contact stiffness or semi-empirical nonlinear Hertzian contact stiffness in previous works. This study proposes a general contact stiffness model for elastic bodies through piecewise linear interpolation of ...
Hongbing Wang, Changjiang Zhou, Yunyan Lv, Bo Hu   +3 more
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An improved analytical method for calculating time-varying mesh stiffness of helical gears

Meccanica, 2017
A “slice method” is adopted to calculate the time-varying mesh stiffness (TVMS) of helical gear pairs, where the tooth is divided into many individual sliced spur gears along the tooth width, and the TVMS of helical gear pairs is obtained by accumulating the TVMS of the sliced spur gear pairs.
Mengjiao Feng, Hui Ma, Zhanwei Li, Qibin Wang, Bangchun Wen   +4 more
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Time-Varying Mesh Stiffness Calculation of Spiral Bevel Gear with Spalling Defect

Mechanism and Machine Theory, 2023
Zhanwei Li, Juntao Zhang, Hansheng Song, Rupeng Zhu, Hui Ma   +4 more
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