Research on wheel/rail coupled vibration of metro cars

ZHOU Zuobin; WU Xingwen; CHI Maoru

doi:10.13890/j.issn.1000-128X.2022.02.023

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Research on wheel/rail coupled vibration of metro cars

Structure Design and Simulation | 更新时间：2024-08-02

- Research on wheel/rail coupled vibration of metro cars
- Electric drive for locomotives Issue 2, Pages: 163-170(2022)
- 作者机构：
  
  1.西南交通大学机械工程学院，四川成都　610031
  2.西南交通大学牵引动力国家重点实验室，四川成都;610031
- 作者简介：
- 基金信息：
- DOI：10.13890/j.issn.1000-128X.2022.02.023
  CLC： U231;U211.5
- Published：10 March 2022，
  
  Received：25 October 2021，
  
  Revised：25 November 2021，
- 稿件说明：
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ZHOU Zuobin, WU Xingwen, CHI Maoru. Research on wheel/rail coupled vibration of metro cars. [J]. Electric drive for locomotives (2):163-170(2022)
DOI：

ZHOU Zuobin, WU Xingwen, CHI Maoru. Research on wheel/rail coupled vibration of metro cars. [J]. Electric drive for locomotives (2):163-170(2022) DOI： 10.13890/j.issn.1000-128X.2022.02.023.

摘要

轮轨耦合振动模态是系统固有属性，掌握轮轨间的耦合振动特征对减少车轮不圆磨耗和钢轨波磨有必然性和现实性。文章建立了详细的地铁车辆轨道耦合动力学模型，利用扫频分析方法，研究了车辆和轨道参数对轮轨耦合振动特性的影响。结果表明，车辆和轨道间的轮轨耦合振动主要表现为轮轨间P2耦合振动和由转向架轮对间钢轨局部变形引起的高频轮轨耦合振动，如轮对间钢轨的1阶、2阶和3阶弯曲振动等。轮轨P2耦合共振频率主要在30~100 Hz，钢轨受扣件刚度和簧下质量影响最为显著，随着扣件刚度的增加，轮轨P2耦合共振幅值和频率均增加。钢轨“Pinned-Pinned”振动和转向架轮对间钢轨的3阶弯曲模态是影响轮轨高频耦合振动的主要因素。当振动频率小于1 000 Hz时，轮对间钢轨的3阶弯曲是轮轨高频振动的主要驱动力，其主要受轴距、扣件阻尼和轨枕间距影响较为显著。

Abstract

The wheel/rail coupled vibration modal is an inherent property of the wheel/rail system

and mastering the coupling vibration characteristics between wheel and rail is inevitable and practical to reduce wheel out of round wear and rail corrugation. In this study

a comprehensive coupled vehicle/track dynamic model was established to investigate the influence of vehicle and track parameters on the wheel/rail coupled vibration by using sweep frequency analysis method. The results show that: The wheel rail coupling vibration between vehicle and track is mainly manifested in P2 coupling vibration between wheel/rail and high-frequency wheel rail coupling vibration caused by local deformation of rail between bogie wheel sets

such as first-order

second-order and third-order bending vibration of rail between wheel sets. The P2 rail/wheel coupled vibration frequency ranges from 30 Hz to 100 Hz

depending on the support stiffness and unsprung mass

and with the increase of fastener stiffness

the resonance amplitude and frequency of wheel rail P2 coupling increase. For the high frequency range

the wheel rail high-frequency coupled vibration is mainly dominated by the 3rd rail bending mode of rail between wheel sets and Pinned-Pinned vibration. When the vibration frequency is less than 1 000 Hz

the third-order bending of rail between wheel sets is the main driving force of wheel rail high-frequency vibration

which is mainly related to the wheel base

damping of rail fastener system

and sleeper spacing.

关键词

轮轨P2耦合共振扫频分析轮轨高频耦合振动轨枕间距钢轨地铁车辆

Keywords

wheel/rail P2-coupled vibrationsweep frequency analysishigh frequency vibration of wheel/rail coupledsleeper spacingtrackmetro vehicles

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