Results 261 to 270 of about 17,339 (289)

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
openaire   +2 more sources

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
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

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. This work examines a split gear pair to address the
Dongsheng Zhang, Shiyu Wang
openaire   +1 more source

Wind turbine planetary gearbox health diagnostic using time-varying meshing stiffness

Australian Journal of Mechanical Engineering, 2014
In wind turbine planetary gearbox, the ability to identify ring-planet-sun gears meshing stiffness from the real data of vibration responses makes it possible to determine the physical existed planet gear defects which are used for severity assessments. There are limitations for vibration based gear diagnostic methods.
S A Abouel-seoud, E S Dyab
openaire   +1 more source

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
openaire   +1 more source

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
openaire   +1 more source

An improved time-varying mesh stiffness model for helical gear pairs considering axial mesh force component

Mechanical Systems and Signal Processing, 2018
Abstract An improved time-varying mesh stiffness (TVMS) model of a helical gear pair is proposed, in which the total mesh stiffness contains not only the common transverse tooth bending stiffness, transverse tooth shear stiffness, transverse tooth radial compressive stiffness, transverse gear foundation stiffness and Hertzian contact stiffness, but ...
Qibin Wang, Bo Zhao, Yang Fu, Xianguang Kong, Hui Ma   +4 more
openaire   +1 more source

Time-varying mesh stiffness analysis of a single-roller enveloping hourglass worm gear

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2018
As a new type of transmission, the single-roller enveloping hourglass worm gear (SEHWG) is widely used in precision mechanical transmission systems. Time-varying mesh stiffness (TVMS) is one of the most important excitations, which has great influences on the dynamic characteristics of SEHWG systems.
Qibin Wang, Bo Zhao, Xianguang Kong, Hongbo Ma, Jiantao Chang   +4 more
openaire   +1 more source