基于SIMPACK的扁疤车轮轮轨冲击力学特性分析

摘要/Abstract

摘要： 为研究高速列车车轮多处扁疤引起的动力学问题，建立了CRH2型动车组的车辆-轨道动力学模型及车轮扁疤模型。采用变轮径扁疤模拟法，分析单处和两处扁疤的车轮引起的轮轨冲击响应，确定车轮两处扁疤时的扁疤长度、车速及扁疤间夹角变化对轮轨冲击的影响，进而确定CRH2型动车组安全运行时车轮扁疤限值，为高速动车组列车的行车安全提供了依据。

关键词: 高速列车, 轮轨冲击, 车轮扁疤限值, 动车组

Abstract: In order to study the dynamics issues of high-speed train wheels with multiple flats, a dynamics model of CRH2 EMU and wheel flat model was developed. The simulation method that changed wheel radius to simulate wheel flats was applied. By analyzing the wheel-rail impact response caused by single flat and two flats, the effects of wheel/rail impact caused by the changes of flat lengths, train speeds and phase angles of multiple flats were determined, and the wheel flat limit was determined under CRH2 EMU safely running. These provide a basis for safe running of high-speed trains.

Key words: high-speed train, wheel/rail impact, wheel flat limit； electric multiple unit(EMU)

中图分类号:

U271.91

秦玉冬;胡明;杨柳青;周迅. 基于SIMPACK的扁疤车轮轮轨冲击力学特性分析[J]. 中国机械工程.

QIN Yudong;HU Ming;YANG Liuqing;ZHOU Xun. Mechanics Characteristics Analysis of Wheel/Rail Impact Induced by Wheel Flats Based on SIMPACK[J]. China Mechanical Engineering.

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