车辆系统横向运动稳定性评判的数值仿真研究  

The Numerical Simulation Research on Judgment of Lateral Motion Stability of the Vehicle System

作　　者：贾璐[1] 曾京[1] 池茂儒[1] 

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：《铁道车辆》2011年第9期1-6,共6页Rolling Stock

基　　金：铁道部科技研究发展计划项目(2010J001-A);国家自然科学基金项目(51005189)

摘　　要：采用极限环法、构架加速度幅值法、构架和轮对加速度均方根值法对车辆系统的横向运动稳定性进行了评判。结果表明,采用构架加速度幅值法评判得到的临界速度高于采用极限环法得到的,而采用构架和轮对加速度均方根值法评判得到的临界速度在速度高时往往要低于采用极限环法得到的。对于TSI L 84—2008标准规定的构架加速度幅值评判方法,通过仿真分析,建议将其滤波频率3Hz～9Hz改为2Hz～9Hz,以覆盖低于3Hz的蛇行失稳频率,使评判结果更加准确。最后,还对高速车辆蛇行失稳后的脱轨安全性和运行平稳性进行了分析。The limit cycle method,frame acceleration magnitude method,frame and acceleration mean square root method are used to make the judgment of lateral motion stability.The result shows that the critical speed obtained through judgment with the frame acceleration magnitude method is higher than that obtained with the limit cycle method,and the critical speed obtained through judgment with the frame and acceleration mean square root method is often lower than that obtained with the limit cycle method at high speed.For the frame acceleration magnitude judgment method specified in TSI L 84-2008,through simulation analysis,the filtering frequency of 3 Hz^9 Hz is suggested to be changed into 2 Hz^9 Hz to cover the hunting instability frequency,so as to make the judgment result be more accurate.In the end,the derailment safety and ride comfort after the hunting instability of high speed cars are analyzed.

关 键 词：铁道车辆 横向运动稳定性 安全性 运行平稳性 仿真分析 

分 类 号：U270.11[机械工程—车辆工程]