高速列车承载结构对车体模态频率的影响  

Effects of high-speed train load bearing structure on the car-body's modal characteristics

作　　者：干宇文 张立民[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：《机械》2013年第11期26-28,共3页Machinery

摘　　要：运用Hypermesh软件建立了某型高速列车有限元模型,选定内侧地板、侧墙和车顶作为研究对象,分析了承载结构厚度尺寸的变化对车体一阶垂向弯曲、菱形和扭转变形固有频率的影响。结果表明,车顶厚度的变化对车体模态频率的影响最大,在车体设计时可通过修改车顶的参数来改进车体的模态特性。The finite element of the car-body has been built by means of Hypermesh. Select inside-floor, sidewall and roof as research target, analyse the effects of Load Bearing Structure＇s thickness on the Car-body＇s vertical bending, rhombic and torsion＇s natural frequency. Find out roof＇s thickness is the most significant factor that will influence car-body＇s modal characteristics, thus, by changing roof＇s thickness can optimize car-body＇s modal properties.

关 键 词：高速列车 承载结构 厚度 模态频率 

分 类 号：U260.17[机械工程—车辆工程]