全铝车身纯电动客车车顶骨架的轻量化设计  

Lightweight Design of Roof Frame of Pure Electric Bus

作　　者：陈洮 何锋[1] 蒋雪生 周雍 Chen Tao;He Feng;Jiang Xuesheng;Zhou Yong(School of Mechanical Engineering,Guizhou University,Guiyang City,Guizhou Province 550025,China;Guizhou Changjiang River Co.,Ltd.,Guiyang City,Guizhou Province 550025,China)

机构地区：[1]贵州大学机械工程学院,贵州省贵阳市550025 [2]贵州长江有限公司,贵州省贵阳市550025

出　　处：《农业装备与车辆工程》2022年第10期52-55,108,共5页Agricultural Equipment & Vehicle Engineering

基　　金：贵州省科技计划项目“全铝车身纯电动客车关键技术研究”(黔科合支撑[2019]2158号)。

摘　　要：为了减少原全铝车身纯电动客车车顶骨架刚强度冗余,以某全铝城市客车车身为研究对象,基于拓扑优化理论对车顶骨架结构进行优化。建立全铝客车骨架有限元模型,选取形变较大的车顶骨架进行2种典型工况下的拓扑优化,依据拓扑结果对车顶骨架再设计,通过尺寸优化降低刚强度冗余,完成车顶骨架轻量化。结果表明,优化后的车顶骨架刚强度性能达标,质量显著降低。In order to reduce the stiffness and strength redundancy of the original all-aluminum pure electric bus roof frame, an allaluminum city bus body was taken as the research object, and the roof frame structure was optimized based on topology optimization theory. The finite element model of all-aluminum bus skeleton was established, and the roof skeleton with large deformation was selected to carry out topology optimization under two typical working conditions. According to the topology results, the roof skeleton was redesigned, and the stiffness and strength redundancy were reduced through size optimization, and the light weight of the roof skeleton was completed. The results show that the stiffness and strength of the optimized roof frame reach the standard and the mass is significantly reduced.

关 键 词：车顶骨架 拓扑优化 尺寸优化 轻量化 

分 类 号：U463.822[机械工程—车辆工程] U469.72[交通运输工程—载运工具运用工程]