Results 241 to 250 of about 16,116 (280)
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Time-varying mesh stiffness calculation of cracked spur gears
Engineering Failure Analysis, 2014Abstract 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 +3 more
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Improved time-varying mesh stiffness model of cracked spur gears
Engineering Failure Analysis, 2015Abstract 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 +4 more
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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 +4 more
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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 +4 more
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Effect of Backlash on Transmission Error and Time Varying Mesh Stiffness
2021Gears 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, 2017As 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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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, 2014Time-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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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 +3 more
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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 +3 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, 2014A 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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Contact characterization and time-varying meshing stiffness calculation of elliptical gears
The Journal of Strain Analysis for Engineering DesignThe investigation of tooth contact characteristics in elliptical gears holds significant importance for gear transmission analysis. This study focuses on elliptical gear pairs, establishing precise tooth surface equations through gear hobbing principles to develop a digital model.
Yongping Liu +5 more
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