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Biomechanical evaluation of a lower-limb implant model under gait and stumbling conditions using finite element analysis. [PDF]
Sci RepNawel G +9 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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Simulation Research on the Time-Varying Meshing Stiffness and Vibration Response of Micro-Cracks in Gears under Variable Tooth Shape Parameters [PDF]
Applied Sciences (Switzerland), 2019 The gear is one of the important parts of a rotary gearbox. Once catastrophic gear failure occurs, it will cause a great threat to production and life safety.
Jianfeng Ma +2 more
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Dynamic Simulation of 2K-H Differential Gear Train with Time-Varying Meshing Stiffness [PDF]
Advanced Materials Research, 2011 Taking 2K-H differential gear train as study object, dynamic equation of torsion vibration was established with influence of time-varying meshing stiffness. The virtual-prototype with nonlinear meshing force was modeled using Virtual.Lab Motion software.
Hai Ping Liu +3 more
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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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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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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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Calculation of Time-Varying Mesh Stiffness Affected by Load Based on FEM
Volume 10: 2017 ASME International Power Transmission and Gearing Conference, 2017Time-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 +5 more
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