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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 104
Edited by: J. Pombo
Paper 309

Nonlinear Dynamics of a Gear Transmission System under Parametric and Self-Excited Excitation on a High-Speed Train

G.H. Huang1, W.H. Zhang1, Y.P. Fu1, S.L. Liang2 and X.Y. Wang2

1State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu, Sichuan, China
2CNR, Changchun Railway Passenger Vehicles Co., Ltd., Changchun, Jilin, China

Full Bibliographic Reference for this paper
G.H. Huang, W.H. Zhang, Y.P. Fu, S.L. Liang, X.Y. Wang, "Nonlinear Dynamics of a Gear Transmission System under Parametric and Self-Excited Excitation on a High-Speed Train", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 309, 2014. doi:10.4203/ccp.104.309
Keywords: gear transmission system, parametric vibration, self-excited vibration, stick-slip vibration, dynamics, high-speed train.

Gear vibration is one kind of parametric vibration, meanwhile, the vibration of a gear transmission system under slippage is also a self-excited torsional vibration. In order to study the torsional vibration of the gear transmission system under slippage in a high-speed train, a parametric vibration model of the gear transmission system was developed where the time-varying stiffness and the transmission error were considered. In the model, time-varying mesh stiffness of meshing teeth pairs was calculated using finite element analysis and expanded using the technique of Fourier series. Based on this model, the nonlinear characteristic of self-excited torsional vibration caused by the wheel-rail creep ratio was analyzed. Further, a multi-body dynamics model of the motor car including the driving system was established. Results show that when the wheel-rail creep ratio is in excess of the best value, selfexcited vibration occurs and the gear transmission system exhibits the phenomenon of a limited cycle at the same time. The self-excited vibration has no effect on the change of the main frequencies of the gear transmission system, but causes a strong vibration of the gear transmission system. The gear angular acceleration, gear meshing force and the acceleration of the gearbox will dramatically increase when the stick-slip oscillation happens, this should be avoided in the train operation.

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