A study on the effect of an abnormal worn rail on the lateral acceleration of a bogie frame

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Journal of Vibration and Shock ›› 2019, Vol. 38 ›› Issue (20) : 244-251.

WANG Chen1，WU Pingbo1，LUO Shihui1，XU Ziqiang2，MA Weihua1，DONG Xiaoqing2

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Abstract

For exploring the causes of altered bogie lateral accelerations of certain high speed trains, this paper aims at analyzing the relationship between the profile of worn rails and the dynamic behaviors of such high speed trains.A dynamic model was developed with actual measured wheel and rail profiles.The effect of the worn wheel/rail relationship on transverse vibration of the bogie frame was investigated.Simulation results indicated that the lateral acceleration of wheelsets and the bogie frame running on long-term unpolished rails was remarkably higher than those on rails with once and twice polishment.During the testing process, the equivalent conicity would increase with running distance for unpolished rails.The main reason for poor contact between wheel and rail was found to be gauge angle worn and the camber worn rail has not been polished for a long time.

Key words

High-Speed train / Bogie frame / Abnormal worn rail / Acceleration alarm / Field test

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WANG Chen1，WU Pingbo1，LUO Shihui1，XU Ziqiang2，MA Weihua1，DONG Xiaoqing2. A study on the effect of an abnormal worn rail on the lateral acceleration of a bogie frame[J]. Journal of Vibration and Shock, 2019, 38(20): 244-251

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