动车组车体车门设计及模态性能改进  

Research on Door Design and Modal Performance Promotion for EMU Bodwork

作　　者：张军[1] 王建华[1] 兆文忠[1] 

机构地区：[1]大连交通大学交通运输工程学院,辽宁大连116028

出　　处：《大连交通大学学报》2017年第3期17-21,共5页Journal of Dalian Jiaotong University

基　　金：中国铁路总公司科技计划资助项目(2014J004-O);牵引动力国家重点实验室开放课题资助项目(TPL1402)

摘　　要：车体模态频率是影响车体性能的重要动力学参数,车体模态计算和分析是设计过程中的重要内容.建立了城际动车组铝合金车体有限单元模型,用有限单元法计算了车体模态,分析了车门位置、车门高度、车门宽度、中间车门与窗口之间的距离对车体模态频率的影响.研究表明:车门位置、高度均对车体模态有较大影响,两端车门向车体两端移动可以提高车体一阶垂弯模态频率,降低中间车门高度可以明显提高车体一阶扭转模态频率.通过重新布置车门位置、修改车门尺寸及门框结构,在保证车体重量不变的情况下使车体模态频率得到了较大提高.A finite element model of a EMU bodwork is established,and the bodywork modals are extracted by using finite element method. The changes of modal frequencies along with the door position,door height,door width and distances between doors and windows are analyzed. The results show that the door position and door height have significant effect on the bodwork modal frequencies. The first order bending mode frequency can be increased by moving the end doors to the vehicle ends,and the first order torsion mode frequency can be improved by reducing the height of the middle door. The modal frequencies of bodywork are well improved by making over the door position,door height and door structure,etc,and meanwhile the bodywork weight is not added.

关 键 词：动车组 铝合金车体 有限元法 车门 模态频率 

分 类 号：U266[机械工程—车辆工程]