扭曲线路下A型地铁车辆安全性分析  

Safety Analysis of Type A Metro Vehicle on Twisted Line

作　　者：侯龙刚 梁树林[1] 池茂儒[1] 王欢声 HOU Longgang;LIANG Shulin;CHI Maoru;WANG Huansheng(State Key Laboratory of Traction Power,Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]西南交通大学牵引动力国家重点实验室,四川成都610031

出　　处：《机械》2021年第10期38-45,共8页Machinery

基　　金：国家重点研发计划项目(2018YFB1201701);科技部常规性科技援助项目(KY201701001)。

摘　　要：为了研究轨道扭曲对A型地铁车辆动力性能的影响规律,本文利用多体动力学软件对标准120 km/h速度级A型地铁车辆进行动力学建模。基于多体动力学原理和轮轨接触理论,运用SIMPACK和MATLAB软件联合仿真,对不同参数下车辆临界速度和系统模态进行分析。在轨道扭曲线路条件下,对考虑不同轮轨匹配的车辆脱轨安全性进行校核;另外,为防止车辆运行中出现爬轨安全性问题,计算了轮重减载率和转向架回转阻尼系数以校核车辆爬轨安全性。计算结果表明:新轮状态下,轮轨黏着系数越高车辆运行稳定性越好,车辆参数对系统振动模态影响明显;扭曲线路工况下,车辆安全性能校核结果良好,且其校核方法为轨道车辆在此类恶劣线路下的安全性能校核提供了依据。In order to study the influence of the twisted line on the dynamic performance of Type A metro vehicle,in this paper,the multi-body dynamics software is used to model the standard 120 km/h speed class Type A metro vehicle.On the principle of multi-body dynamics and wheel-rail contact theory,the SIMPACK and MATLAB software are used for joint simulation to analyze the critical speed and system mode of the vehicle under different parameters.Under the condition of twisted line,the derailment safety of vehicles considering different wheel-rail matching is checked;in addition,in order to ensure the safety of rail climbing during vehicle operation,the wheel load reduction rate and the bogie turning damping coefficient are calculated to check the safety of rail climbing.The calculation results show that with the new wheels,the vehicle running stability gets better as the wheel-rail adhesion coefficient increases,and the vehicle parameters have a significant impact on the system vibration mode;the vehicle safety performance check result is good under the twisted line condition,and the check method provides a basis for the safety performance check of rail vehicles under the lines with severe conditions.

关 键 词：地铁车辆 轨道扭曲 多体动力学 SIMPACK 轮轨匹配 

分 类 号：U270.1[机械工程—车辆工程]