Dynamic analysis of axle box bearings on the high-speed train caused by wheel-rail excitation

doi:10.1007/s10483-024-3097-7

Abstract

Abstract:

To explore the impact of wheel-rail excitation on the dynamic performance of axle box bearings, a dynamic model of the high-speed train including axle box bearings is developed. Subsequently, the dynamic response characteristics of the axle box bearing are examined. The investigation focuses on the acceleration characteristics of bearing vibration under excitation of track irregularities and wheel flats. In addition, experiments on both normal and faulty bearings are conducted separately, and the correctness of the model and some conclusions are verified. According to the research, track irregularity is unfavorable for bearing fault detection based on resonance demodulation. Under the same speed conditions, the acceleration peak of bearing is inversely proportional to the length of the wheel flat and directly proportional to its depth. The paper will contribute to a deeper understanding of the dynamic performance of axle box bearings.

Key words: high-speed train, track irregularity, wheel flat, dynamic simulation

2010 MSC Number:

74A05
74H15

Qiaoying MA, Shaopu YANG, Yongqiang LIU, Baosen WANG, Zechao LIU. Dynamic analysis of axle box bearings on the high-speed train caused by wheel-rail excitation. Applied Mathematics and Mechanics (English Edition), 2024, 45(3): 441-460.

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URL: https://www.amm.shu.edu.cn/EN/10.1007/s10483-024-3097-7

https://www.amm.shu.edu.cn/EN/Y2024/V45/I3/441

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[1]	Xiaohui GU, Yajia WANG, Pengfei LIU, Zechao LIU, Shaopu YANG. Dynamic modeling and simulation of irregular faults in axle box bearings of high-speed trains [J]. Applied Mathematics and Mechanics (English Edition), 2025, 46(10): 1883-1902.
[2]	Yongqiang LIU, Baosen WANG, Shaopu YANG, Yingying LIAO, Tao GUO. Characteristic analysis of mechanical thermal coupling model for bearing rotor system of high-speed train [J]. Applied Mathematics and Mechanics (English Edition), 2022, 43(9): 1381-1398.