高速列车弹性车体垂向振动与悬挂参数设计  

The Vertical Vibration and Suspension Parameters Design of Flexible Car Body for High-speed Railway Vehicles

作　　者：曹辉[1,2] 张卫华[1] 缪炳荣[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031 [2]西南科技大学制造科学与工程学院,绵阳621010

出　　处：《机械科学与技术》2015年第5期775-779,共5页Mechanical Science and Technology for Aerospace Engineering

基　　金：国家科技支撑计划项目(2009BAG12A01);国家高速铁路基础研究联合基金项目(U1234208)资助

摘　　要：高速铁道客车车体受轨道激扰力的作用产生弹性振动,影响客车运行平稳性。为了分析车体弹性振动与车体悬挂参数关系,基于刚柔耦合动力学原理,建立了客车垂向动力学模型,根据共振理论及模态叠加原理计算了系统固有频率和响应功率谱,分析了车辆系统悬挂参数和运行参数对振动的影响。仿真发现弹性车体振动响应大于刚性车体,车体一阶垂弯振动对弹性振动的贡献最大。在满足结构条件下,适当降低一、二系悬挂垂向阻尼、一系悬挂垂向刚度可减小车体弹性共振,系统各个部件自振频率控制、车体垂向悬挂阻尼控制可实现整车模态及局部有害模态控制。The flexible car body vibration disturbed by the track irregularity influenced vehicle stability. A vertical dynamics model for railway passenger carriages is established based on the principle of rigid-flexible coupled dynamics. The modal frequencies and power spectrum density( PSD) of the system response are calculated based on the resonance and modal superposition theory. The influence of the vehicle suspension parameters and running parameters on the vibration are analyzed. The numerical simulation results show that the elastic car body model vibration is larger than the rigid one. The first-order bending vibration has the most important role for the elastic vibration. The adequate vertical suspension damping and primary suspension stiffness can be adopted to reduce the car body elastic vibration in the structure design. The system components vibration frequency control and the car body suspension damping control can achieve the global car modal and local harmful modal control.

关 键 词：高速铁道客车 弹性车体 垂向振动 悬挂参数 模态 

分 类 号：U270.1[机械工程—车辆工程]