基于环境激励的车辆系统工作模态试验分析  

Modal Testing and Analysis of the Vehicle System Based on Ambient Excitation

作　　者：陈林[1] 张立民[1] 段合朋[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

出　　处：《噪声与振动控制》2008年第6期81-84,共4页Noise and Vibration Control

基　　金：教育部新世纪优秀人才支持计划:NCET-06-0798

摘　　要：应用环境激励下模态试验参数识别的方法,在滚动振动试验台上对某高速轨检车进行工作模态试验,得到该车悬挂系统和车架结构的模态参数。试验结果表明,在试验条件下,用环境激励的方法能够得到铁道车辆悬挂系统和车体结构的各阶模态参数。通过对该车试验的结果分析,认为该轨检车的悬挂系统模态参数符合TB/T 3115-2005标准。但是车架第一阶弹性结构模态发生在频率等于8.668Hz处,建议提高该车车架结构的一阶弯曲刚度。With the method of modal test and parameter identification under ambient excitation, the operating modal test of a high-speed track inspection car was carried out＇on the rail-vehicle roller test-rig. The modal parameters of the suspension system and frame structure were obtained. The results imply that the proposed method is effective, and the modal parameters of the vehicle suspension system accord with the standard of TB/T 3115-2005. The first order frequency of the frame is 8. 668Hz. So, it is suggested that the first order bending stiffness should be raised.

关 键 词：振动与波 试验模态分析 参数识别 铁道车辆 高速列车 

分 类 号：U270.1[机械工程—车辆工程]