Analysis on the Influence of Wheel Flat on Wheel-Rail Contact Creep Characteristics of High-speed Train

Hongbing WANG; Guofang LI; Yuanjie HU; Yi ZHANG; Wangcai DING

doi:10.13890/j.issn.1000-128x.2021.04.102

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Analysis on the Influence of Wheel Flat on Wheel-Rail Contact Creep Characteristics of High-speed Train

Railway Rolling Stock | 更新时间：2021-12-09

- Analysis on the Influence of Wheel Flat on Wheel-Rail Contact Creep Characteristics of High-speed Train
- Electric Drive for Locomotives Issue 4, Pages: 26-33(2021)
- 作者机构：
  
  1.兰州交通大学　机电工程学院，甘肃　兰州　730070
  2.中国铁路兰州局集团有限公司　嘉峪关车辆段，甘肃　嘉峪关　735100
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128x.2021.04.102
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Hongbing WANG, Guofang LI, Yuanjie HU, et al. Analysis on the Influence of Wheel Flat on Wheel-Rail Contact Creep Characteristics of High-speed Train. [J]. Electric Drive for Locomotives (4):26-33(2021)
DOI：

Hongbing WANG, Guofang LI, Yuanjie HU, et al. Analysis on the Influence of Wheel Flat on Wheel-Rail Contact Creep Characteristics of High-speed Train. [J]. Electric Drive for Locomotives (4):26-33(2021) DOI： 10.13890/j.issn.1000-128x.2021.04.102.

摘要

为了研究车轮扁疤对高速列车轮轨接触蠕滑特性的影响，基于多体动力学理论和滚动接触简化理论，建立考虑轮对柔性的刚柔耦合车辆动力学模型，分析车轮扁疤参数变化对高速列车轮轨力和蠕滑力等特性的影响，并结合轮重减载率和轮轨垂向力指标得到车轮扁疤长度的安全限值。结果表明：考虑轮对柔性能更好地反映轮轨接触状态；在轮轨滚动接触过程中，车轮扁疤过长会导致轮对发生跳轨现象，严重时导致车辆脱轨，应及时根据扁疤长度限值镟修轮对；结合轮重减载率和轮轨垂向力制定车轮扁疤长度安全限值为27 mm，该限值可以更有效地保障高速列车安全运行。

Abstract

In order to study the effect of wheel flat on the wheel-rail contact creep characteristics of high-speed trains, based on the multibody dynamics theory and rolling contact simplification theory, a rigid- flexible coupling dynamic model considering the flexibility of the wheelset was established. The influence of wheel flat parameters on the characteristics of high-speed train wheel-rail force and creep force was analyzed, and the safety limit of wheel flat length was obtained by combining the wheel load reduction rate and the wheel-rail vertical force index. The results showed that: by considering the flexibility of the wheelset, the contact state of the wheel and rail can be better reflected; during the rolling contact of the wheel and rail, the overlong flat of the wheel would cause the wheelset to jump and lead to derail when it was serious, so the wheelset should be timely repaired according to the limit value of flat length. Combined with wheel load reduction rate and wheel rail vertical force, the safety limit of wheel flat length was 27 mm, which could more effectively guarantee the safe operation of high-speed trains.

关键词

高速列车刚柔耦合车轮扁疤轮轨接触蠕滑力

Keywords

high speed trainrigid and flexible couplingwheel flatwheel/rail contactcreep force

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