高速列车车下设备模态匹配研究  

Modes matching between suspended devices and car body for a high-speed railway vehicle

作　　者：宫岛[1] 周劲松[1] 孙文静[1] 陈虹[1] 

机构地区：[1]同济大学,上海201804

出　　处：《振动与冲击》2014年第8期180-185,共6页Journal of Vibration and Shock

基　　金：国家"十二五"科技支撑计划资助项目(2011BAG10B01-A03);中国博士后科学基金资助项目(2013M541538)

摘　　要：建立了整备状态车体有限元模型及包含车体弹性的高速列车车辆刚柔耦合动力学模型，分析了车下设备吊挂方式对车体整备状态模态参数的影响，提出车下设备隔振橡胶件参数设计方法，并研究了整备状态下车体与车下设备悬挂模态参数的匹配关系。结果表明，车下设备采用弹性吊挂时，车体整备状态下的模态频率显著提升；合理设置车下设备隔振悬挂参数可有效降低车体弹性振动，算例中，当橡胶件的静挠度设置为8-9 mm时，设备浮沉频率可与车体垂向一阶弯曲频率避开，侧滚频率可与车体菱形变形模态频率避开，有源设备高频振动减振效果理想，车辆可以获得优良的运行平稳性，同时车下设备自身振动亦不剧烈。FE models of fully-equipped car bodies and a high-speed railway vehicle rigid-flexible coupled model including the flexibility of car body were built,the influences of suspended forms of devices on modal parameters of fully-equipped car bodies were analyzed,the design procedures of rubber isolator parameters of suspended devices were proposed,and the matching relations between car body modes and suspended equipment modal parameters were investigated.The results showed that car body modal frequencies can be promoted obviously with devices of elastic suspension;reasonable suspension parameters of devices can effectively suppress car body flexible vibration.The examples here showed that when the static deflection of a rubber isolator is 8-9 mm,the bounce and roll frequencies of the device can be far from the first vertical bending and the diagonal distortion frequencies of the car body,respectively;the devices having vibration sources can achieve a good effect of vibration reduction in a high frequency range,the vehicle can obtain a good ride quality and the suspended device vibration is not strong.

关 键 词：高速列车 车下设备 隔振设计 模态匹配 

分 类 号：U270.1[机械工程—车辆工程]