车轮踏面外形及轮径差对车辆动力学性能的影响  

Influence of Wheel Tread Profile and Rolling Diameter Difference on Dynamic Performance of Vehicles

作　　者：李艳[1] 张卫华[1] 池茂儒[1] 周文祥[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：《铁道学报》2010年第1期104-108,共5页Journal of the China Railway Society

基　　金：国家自然科学基金资助项目(50823004);国家重点基础研究发展计划(973计划)项目(2007CB714701)

摘　　要：车轮踏面磨耗导致车轮外形改变,使其滚动圆直径产生偏差,对车辆系统的动力学特性影响较大。为了对其影响程度进行表征,依据某动车组车型建立多体系统动力学模型,分析不同磨耗程度下的稳定性、平稳性及安全性指标,研究踏面凹形磨耗对列车运行的影响。动力学仿真分析发现,随着车轮外形和轮径变化的加剧,产生轮轨接触的非对称现象,导致车辆稳定性受到极大影响,平稳性变差。因此,为了保证车辆运行的稳定性及安全性,应设法避免使用外形严重磨耗的车轮。Wheel tread wear leads to change of the wheel profile and rolling diameter, which influences the dynamic behaviors of railway vehicles seriously. To characterize the extent of influence, a dynamic model of a certain EMU is built. Researches on the influence of hollow-worn wheels have been done by analyzing the stability, ride quality and safety index under different wear conditions. The simulation results are obtained： Along with intensification of changing of wheel profiles and rolling diameters, unsymmetrical wheel-rail contact occurs and dramatically influences the stability and riding quality of vehicles. Therefore, use of seriously worn wheels should be avoided in order to ensure good dynamic characteristics and running performance of vehicle systems.

关 键 词：踏面 轮径 稳定性 平稳性 

分 类 号：U260.331.1[机械工程—车辆工程] U270.331[交通运输工程—载运工具运用工程]