概念设计阶段基于混合元模型的纯电动铝合金汽车车身轻量化优化设计
Lightweight Optimization Design of Aluminum Electric Vehicle Body Based on HAM in Concept Design Phase of Development

在汽车车身概念设计阶段，针对轻量化设计及优化白车身刚度问题，建立了某款纯电动铝合金汽车车身骨架基于真实接头的简化力学模型。运用灵敏度分析筛选出灵敏度较大部件，然后利用元模型的优化方法（hybrid and adaptive meta-modeling method，HAM）对灵敏度较大部件进行截面厚度优化，使优化目标车身质量得到了降低，同时改善了车身的模态和刚度，根据研究的数据制造了电动车车身。
In the concept design phase of vehicle body development, based on actual joints, a simplified model of aluminum electric vehicle skeleton was built for lightweight design and stiffness optimization. The components with high sensitivity were selected through sensitivity analysis, and then their sectional thickness were optimized with hybrid and adaptive meta-modeling method (HAM). As a result, the optimization target of body weight has been reduced, while the mode and stiffness of the vehicle body were also improved. The electric vehicle body was produced with the obtained data