摘要
高速动车组底架作为列车的重要组成部分,其性能对列车运行安全具有重要的作用,对底架及其零部件进行轻量化设计可以提升列车运行速度以及运行性能。文章以某型号高速动车组底架斜隔墙结构为研究对象,通过HyperMesh对整车进行了有限元建模,根据EN 12663:2010标准对车体进行了静强度计算。通过分析Von Mises应力云图得到了斜隔墙结构最危险工况。以车体底架斜隔墙部位的结构性能提升为目的,选取最危险工况,使用Workbench软件对其进行了拓扑优化。为了进一步降低该部位的应力,基于响应面法对斜隔墙周围的板件进行了灵敏度分析,选择灵敏度较高的板件进行了尺寸优化计算。结果表明,优化后结构的最大应力位置为斜隔墙下端,在分析的4个工况中,优化后该位置的应力较原结构应力均有降低,满足材料性能要求;优化后结构的质量比原结构质量降低了24.96%,达到了降低局部应力同时实现轻量化的目的。
As an important part of the train,the performance of the high-speed EMUs chassis plays a critical role in the safe operation of the train.The lightweight design of the chassis and its components can improve the running speed and performance of the train.This paper takes the inclined partition wall structure of the chassis of a certain type of high-speed EMU as the research object,the finite element model of the whole vehicle is established by HyperMesh,and the static strength of the carbody is calculated according to EN 12663:2010.By analyzing Von Mises stress nephogram,the most dangerous working conditions of inclined partition wall structure are obtained.To improve the structural performance of the inclined partition wall of the chassis,the most dangerous working conditions are selected,and the topology optimization is carried out by using Workbench software.To further reduce the stress in this part,the sensitivity analysis of the plates around the inclined partition wall is carried out based on the response surface method,and the plates with higher sensitivity are selected for size optimization calculation.The results indicate that the position of the maximum stress of the optimized structure is the lower end of the inclined partition wall,and the optimized structure stress is reduced compared with the original structure stress under the four analyzed working conditions,which meets the requirements of material properties;The mass of the optimized structure is reduced by 24.96%compared with the original structure,which achieves the purpose of reducing local stress and lightweight.
作者
王贺瑶
王剑
WANG Heyao;WANG Jian(School of Locomotive and Rolling Stock Engineering,Dalian Jiaotong University,Dalian 116000,China)
出处
《铁道车辆》
2025年第3期52-60,共9页
Rolling Stock
关键词
高速动车组
斜隔墙
拓扑优化
响应面法
灵敏度
轻量化
high-speed EMU
inclined partition wall
topology optimization
response surface methodology
sensitivity
lightweight
作者简介
第一作者:王贺瑶(2000-),男,硕士研究生。E-mail:15041970815@163.com;通信作者:王剑(1976-),男,博士,教授。E-mail:wangjian_126@163.com。
