低地板电动城市客车车身拓扑优化与结构分析

摘要

基于某新型低地板纯电动城市客车的概念设计初始要求，建立该客车车身的有限元模型，采用变密度法，利用拓扑优化技术对多工况下的客车车身结构进行优化，并对优化的结构进行分析验证。结果表明，结构的刚度和强度均满足设计要求。%Based on the requirements of initial concept design for a new low floor electric city bus, the authors es-tablish a finite element model of the bus body, adopt the variable density method,use the topology optimization tech-niques to optimize body structure under multi-load cases, and verify the optimized structure analysis. The results show that the stiffness and strength of the bus body structure all meet the design requirements.