• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2023, Vol. 59 ›› Issue (8): 196-203.doi: 10.3901/JME.2023.08.196

• 运载工程 • 上一篇    下一篇

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制动工况下多边形车轮对轮轨动态相互作用影响研究

郭欣茹, 杨云帆, 王超, 凌亮, 王开云, 翟婉明   

  1. 西南交通大学牵引动力国家重点实验室 成都 610031
  • 收稿日期:2022-01-25 修回日期:2022-10-25 出版日期:2023-04-20 发布日期:2023-06-16
  • 通讯作者: 凌亮,男,1986年出生,博士,副研究员。主要研究方向为车辆-轨道相互作用与行车安全控制。E-mail:liangling@swjtu.edu.cn
  • 作者简介:郭欣茹,女,1997年出生。主要研究方向为车辆系统动力学。E-mail:guoxinru325@163.com
  • 基金资助:
    国家自然科学基金资助项目(52072317,U19A20110,51825504)

Influence of Wheel/Rail Dynamic Interaction Induced by Polygonal Wheels under Braking Condition

GUO Xin-ru, YANG Yun-fan, WANG Chao, LING Liang, WANG Kai-yun, ZHAI Wan-ming   

  1. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031
  • Received:2022-01-25 Revised:2022-10-25 Online:2023-04-20 Published:2023-06-16

摘要: 车轮多边形是导致车辆和轨道系统异常振动的主要激励源,严重的车轮多边形将威胁车辆和轨道零部件的疲劳寿命。针对机车车辆系统异常振动问题,对存在多边形磨耗的车轮和机车振动特性进行了现场测试。测试结果表明,严重的高阶车轮多边形会导致机车轮对垂向和纵向剧烈振动。建立重载列车-轨道三维耦合系统动力学模型,研究不同制动工况和轮轨接触界面摩擦条件下多边形车轮对轮轨垂向和纵向动态相互作用的影响。研究结果表明,在重载列车制动过程中,车轮多边形不仅加剧了轮轨间垂向的冲击作用,还引发了显著的纵向轮轨相互作用;在轮轨低黏着接触状态下,严重的车轮多边形会加剧轮轨纵向动态相互作用以及接触面的磨耗和疲劳损伤。

关键词: 重载电力机车, 车轮多边形, 异常振动, 车辆-轨道耦合动力学, 制动, 轮轨动态相互作用

Abstract: Wheel polygonal wear is the main excitation source of abnormal vibration of vehicle and track system, which will threaten the fatigue life of vehicle and track parts. A field test of polygonal wheels and vibration characteristics of locomotive was done to solve the abnormal vibration of locomotive and rolling stock system. The test shows that serious wheel polygonal wear will lead to severe vertical and longitudinal vibration of the locomotive wheelset. Based on the field tests, a three-dimensional dynamic model of heavy-haul train-track coupling system was established to study the influence of polygonal wheels on vertical and longitudinal dynamic action between wheel and rail under different braking conditions and wheel/rail contact friction conditions. The results show that during the braking condition of heavy-haul train, the polygonal wear of wheels not only intensifies the vertical impact between wheel and rail, but causes significant longitudinal wheel/rail interaction; under the low adhesion condition between wheel and rail, the wheel polygonal wear will lead to the significant rise of longitudinal creepage and fluctuation of longitudinal creep force, which can increase the risk of wear or fatigue damage of wheel and rail.

Key words: heavy-haul electric locomotive, polygonal wear of wheels, abnormal vibration, vehicle-track coupled dynamics, braking, wheel/rail rolling contact behavior

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