Abstract:The transmission system is an essential component of high-speed EMU, and its health state is closely related to the safety of train operation. Under the influence of complex wheel-rail excitation, it is difficult to analyze the characteristics of signals of transmission system. In order to explore the vibration characteristics of key components of EMU transmission system under different operating conditions, in this study, the dynamic model of rigid flexible coupling is established. The effect of helical gear, wheel/rail coupling, and taper rolling bearing are considered. the natural frequency and modal response characteristics of the system under different conditions are solved and analyzed. Finally, according to different conditions, the main influencing factors of time domain and frequency domain characteristics of key components are studied. The model was validated in comparison with experimental data. The results show that the support conditions of the system can effectively improve the vibration characteristics of the system. Without random interference, the system vibration is mainly gear meshing frequency. Under random interference, the system vibration has obvious resonance characteristics and high-frequency vibration characteristics.
杨柳1,2,杨绍普2,梁儒全1,杨月婷2. 动车传动系统的振动特征分析[J]. 振动与冲击, 2023, 42(20): 188-195.
YANG Liu 1,2,YANG Shaopu2,LIANG Ruquan1,YANG Yueting2 . Analysis of dynamic characteristics of an EMU transmission system. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(20): 188-195.
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