基于HAM和分步优化法的电动车车身轻量化  

Lightweight of electric car body based on HAM and stepwise optimization

作　　者：涂小春[1] 胡朝辉[1] 顾继超[1] 

机构地区：[1]湖南大学汽车车身先进设计制造国家重点实验室,长沙410082

出　　处：《现代制造工程》2016年第8期44-48,共5页Modern Manufacturing Engineering

基　　金：湖南省自然科学基金资助项目(13JJB003);国家863高技术研究发展计划项目(2AA111802)

摘　　要：针对某款电动车在概念设计阶段车身轻量化系数偏高问题,首先建立车身梁单元参数化模型,运用基于混合近似模型的自适应全局优化(HAM)方法结合分步优化策略,以车身质量最小为目标,对截面尺寸规格进行优化来提高车身扭转刚度。对优化后的有限元模型进行仿真分析,结果表明,优化后车身轻量化系数明显降低。Aiming at the lightweight coefficient of a electric car body on the high side in conceptual phase, a beam model was established. And then the minimal mass as the objective, beam-section specification was optimized and car body torsional stiffness was improved by using Hybrid and Adaptive Metamodel based Global Optimization （HAM） and stepwise optimization strategy. The lightweight coefficient of the optimized car body was decreased obviously according to analyzing of finite element simulation.

关 键 词：概念车身 混合元模型 分步优化 截面规格优化 

分 类 号：U461[机械工程—车辆工程] TP391.9[交通运输工程—载运工具运用工程]