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<p>Based on the dynamic performance of train traction system under complex wheel-rail interaction, the effect of grinder viscosity on train traction vibration and wheel wear is studied in this paper. Firstly, a three-body wheel-rail creep model containing the grinder effect was constructed to reveal the viscosity increasing effect of the grinder under different adhesion conditions, especially under the condition of low adhesion. The stability characteristics of the traction system under dynamic conditions are systematically discussed by establishing a four-rigid-body and five-degree-of-freedom simplified vibration analysis model, which includes vehicle body, frame, wheelset and traction motor. It is found that the periodic viscous vibration of the train traction system is closely related to the initial creepage of the wheel, and optimizing the particle size ratio of the grinding mill can effectively enhance the stability of the traction system and restrain the occurrence of the viscous vibration. In addition, the effect of stick-slip vibration on wheel wear is deeply analyzed. It is pointed out that such vibration will lead to 14-order polygonal wear of wheelsets, and the effect of grinders can effectively reduce this uneven wear phenomenon, promote the uniformity of wheel wear, and improve the overall durability and operation safety of wheel-rail system. This study not only provides a new perspective for understanding the mechanism of wheel-rail adhesion controlled by grinders, but also provides scientific basis and theoretical guidance for designing efficient and stable train traction system and mitigating wheel wear.</p>

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Modeling of three-body creep curve and research on wheel polygon wear of rail vehicle

  • 期刊论文

  • 发表日期：

    2026年2月3日

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  • Yuhang Zhang,
  • Kai Zhou,
  • Jinsong Zhou,
  • Chongyi Chang,
  • Dao Gong,
  • Xiaoyu Li,
  • Yiyang Song

摘要

Based on the dynamic performance of train traction system under complex wheel-rail interaction, the effect of grinder viscosity on train traction vibration and wheel wear is studied in this paper. Firstly, a three-body wheel-rail creep model containing the grinder effect was constructed to reveal the viscosity increasing effect of the grinder under different adhesion conditions, especially under the condition of low adhesion. The stability characteristics of the traction system under dynamic conditions are systematically discussed by establishing a four-rigid-body and five-degree-of-freedom simplified vibration analysis model, which includes vehicle body, frame, wheelset and traction motor. It is found that the periodic viscous vibration of the train traction system is closely related to the initial creepage of the wheel, and optimizing the particle size ratio of the grinding mill can effectively enhance the stability of the traction system and restrain the occurrence of the viscous vibration. In addition, the effect of stick-slip vibration on wheel wear is deeply analyzed. It is pointed out that such vibration will lead to 14-order polygonal wear of wheelsets, and the effect of grinders can effectively reduce this uneven wear phenomenon, promote the uniformity of wheel wear, and improve the overall durability and operation safety of wheel-rail system. This study not only provides a new perspective for understanding the mechanism of wheel-rail adhesion controlled by grinders, but also provides scientific basis and theoretical guidance for designing efficient and stable train traction system and mitigating wheel wear.