高速列车-轨道动态耦合振动响应分析  

Dynamic Coupling Vibration Response Analysis of High-Speed Train-Track

作　　者：聂宇[1] 张金敏[1] 

机构地区：[1]兰州交通大学机电工程学院,甘肃兰州730070

出　　处：《兰州交通大学学报》2013年第4期132-138,共7页Journal of Lanzhou Jiaotong University

摘　　要：利用多体系统运动学理论以及多体动力学软件SIMPACK精确的建立国内某主型动车与轨道系统的耦合动力学模型,通过在SIMPACK软件中仿真车辆在不同速度下的运动状态,对该型车的垂动加速度,横向振动加速度、轮轨垂向力、轮轨横向力、车体垂向位移、车体横向位移等数据进行分析,得到振动响应随速度的变化.进一步分析根轨迹值得出自然阻尼与振动频率的分布曲线图,判断车辆振动与速度的关系以及在该速度下车辆是否失稳,为轨道、车辆结构设计提供一定的参考.The multi-body system kinematics theory and multi-body dynamics software SIMPACK are used to establish the track system dynamics model of one main type of motor vehicle in China. The motion state of the vehicle at different speeds is simulated by SIMPACK software to analyze the data of the vertical dy- namic acceleration, lateral acceleration, wheel-rail vertical force, the wheel-rail lateral force, the body verti- cal displacement and the bodywork horizontal displacement of the car, and to obtain the vibration response with the change of speed. Moreover, the root locus worth is further analyzed to obtain the natural damping and vibration frequency distribution curve, so as to determine the relationship of the vibration and to judge whether the vehicle is instable at the speed in order to provide some references for the design of the track and the vehicle structure.

关 键 词：车辆 速度 振动 频率 

分 类 号：U270.1[机械工程—车辆工程]