轿车铝合金发动机罩板的轻量化设计与可制造性分析  

Lightweight Design and Formability Analysis of Saloon Car Aluminum-alloy Engine Hood

作　　者：朱平[1] 孟瑾[1] 喻明[1] 冯奇[2] 周庆伟[2] 

机构地区：[1]上海交通大学机械系统与振动国家重点实验室,上海200240 [2]上海汽车集团股份有限公司,上海200041

出　　处：《中国公路学报》2011年第3期113-120,共8页China Journal of Highway and Transport

基　　金：上海市科学技术委员会科研重点项目(08DZ1150303)

摘　　要：为了将铝合金零件的综合力学性能纳入初始设计范畴,提出了一套结构优化设计方法。通过建立某款轿车发动机罩板的有限元模型,选择铝合金材料替换原有钢材料,以罩板综合性能为约束,结合优化设计方法,考虑板材的成形性因素,基于原始钢结构空间布局进行全新设计。结果表明:铝合金罩板在满足结构性能要求和可制造性的前提下可实现减轻质量47.1%,为初始设计阶段的铝合金罩板轻量化设计提供了一套可借鉴的方法。In order to integrate overall mechanical property into initial design of aluminum-alloy structure,a new structural optimal design method was provided.Through establishing finite element model of engine hood of a saloon car,a new design based on layout of original steel structure space was proposed.In the design,original steel materials were replaced by aluminum-alloy.Overall property of hood was regarded as constraint.Optimal design methods and formability factors of material were considered.Results show that new aluminum-alloy engine hood matches both the structural performance and formability requirement with weight reduction of 47.1%.The method provides a referable way for lightweight design of aluminum-alloy engine hood in initial design phase.

关 键 词：汽车工程 发动机罩板 有限元法 轻量化 铝合金 刚度 抗凹性 

分 类 号：U463.83[机械工程—车辆工程]