Mechanism of self-excited torsional vibration of locomotive driving system
Mechanism of self-excited torsional vibration of locomotive driving system
Jianxin LIU1(), Huaiyun ZHAO2, Wanming ZHAI1
1. Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, China; 2. Institute of Systems Engineering, China Academy of Engineering Physics, Mianyang 621900, China
A single wheelset drive model and 2-DOFs torsional vibration model were established to investigate the self-excited torsional vibration of a locomotive driving system. The simulation results indicate that the self-excited torsional vibration occurs when the steady slip velocity is located at the descending slope of the adhesion coefficient curve. The principle of energy conservation was used to analyze the mechanism of the self-excited vibration. The factors affecting on the amplitude of the self-excited vibration are studied.
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