Research on the Dynamic Cause of Rail Corrugation in the Braking Section of High-Speed Railways Under Multiple Vibration Inducements

Cui, Xiaolu; Li, Tong; Bao, Pengyu; Wen, Xiaoxia; Yang, Zongchao

doi:10.1007/s42417-022-00559-z

Cited by 3 publications

(1 citation statement)

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“…They claimed that polygonation was easily induced by friction self-excited vibration caused by saturation of wheel-rail creep force on a straight path. Cui, et al [11] studied the dynamic cause of rail corrugation by the theories of self-excitation. Wu, et al [12] investigated the effect of disc brake units on the polygonal wear generation of high-speed railway wheels by friction self-excited vibration.…”

Section: Introductionmentioning

confidence: 99%

Polygonal Wear Mechanism of High-Speed Train Wheels Based on Lateral Friction Self-Excited Vibration

Dong

Cao

2022

Machines

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This work details research on the formation mechanism of wheel polygonalization in high-speed trains and its effect factors by numerical modeling in order to prevent the increasingly prevalent problem of wheel polygonal wear. The lateral self-excited vibration model of a wheel was developed using the LuGre friction model and self-excited vibration theory. The properties of wheel self-excited vibration and the crucial condition of Hopf bifurcation were investigated; the process of wheel polygonal wear was simulated and the results were validated using field tracking data. The results demonstrated that periodic self-excited vibration generated by Hopf bifurcation is a required condition for polygonal wheel attrition at a given speed. The wheel’s polygonal wear has the following characteristics: “Constant speed—Self-excited—Fixed frequency—Divisible.” The order of the polygon is determined by the ratio of the wheel lateral self-excited vibration frequency to its rotational frequency. Wheel polygonal wear was caused by the vertical dynamic force of the wheel rail. The findings of the study can serve as a theoretical foundation for the prediction and reduction of wheel polygonal wear.

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Section: Introductionmentioning

confidence: 99%