车体结构多目标拓扑优化设计探讨  

Multi-objective Study on Carbody Structure Topology Optimization

作　　者：沈安林[1] 肖守讷[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：《铁道机车车辆》2011年第3期5-7,共3页Railway Locomotive & Car

基　　金：973国家重点基础研究发展计划项目(2007cb714700);2010年中央高校基本科研业务专向资金资助项目(SWJTU09CX046)

摘　　要：车体概念设计阶段,为了得到合理的承载结构,运用组合应变能指标函数将静态多工况刚度问题和动态工况振动频率问题统一,采用线性加权方法将多目标问题转化为单目标问题,从而避免因单目标拓扑优化而不能满足车体结构性能要求的缺点;通过对车体结构实现多目标拓扑优化,得到较为清晰的承载结构,为车体承载结构设计提供思路。In order to get a reasonable carbody structure in the conceptual design phase,using compliance index function to solve the rigidity problem on multiple static load and the vibration frequency problem on dynamic load simultaneously,and employing linear weighted method to converse multi-objective problem to single-objective,therefore,this approach overcomes the shortcomings of single-objective optimization methods which can not meet the performance requirements of the carbody structure.A clear carbody load structure is obtained through multi-objective optimization and it can provide ideas for carbody load structure.

关 键 词：车体设计 拓扑优化 多目标 

分 类 号：U270.2[机械工程—车辆工程] U271.92[交通运输工程—载运工具运用工程]