同济大学学报（自然科学版）2017，Vol.45Issue(3)：391-397,7.DOI:10.11908/j.issn.0253-374x.2017.03.013
基于等效静态载荷法的车身碰撞拓扑优化
Topology Optimization of Automotive Body Crashworthiness Design with Equivalent Static Loads Method
摘要
Abstract
The crashworthiness topology optimization of body in white (BIW) under frontal impact loading was carried out by using the equivalent static loads method (ESL).Inertia relief was introduced as boundary conditions;strain energy was adopted as strain energy and relative displacement was employed as the compliance index of the components and parts.A series of comparative studies were executed to discuss the effects of different boundary conditions and various optimization objectives.The results show that if an inertia relief is used as a boundary condition,the ESL-based topology optimization results have a tendency to distribute more material on the impact occurred position,while the single point constraint (SPC) boundary conditions tend to concentrate more materials on the contrived SPC restrained positions.In addition,minimizing relative displacements is suitable for the ESL-based topology optimization,but maximizing relative displacements should be transformed into constraints to perform the optimization.关键词
车身结构/拓扑优化/碰撞分析/正碰工况/等效静态载荷法Key words
automotive body structure/topology optimization/crashworthiness design/frontal impact/equivalent static loads method(ESL)分类
交通工程引用本文复制引用
高云凯,田林雳..基于等效静态载荷法的车身碰撞拓扑优化[J].同济大学学报（自然科学版）,2017,45(3):391-397,7.基金项目
国家自然科学基金(51575399) （51575399）
“十三五”国家科技支撑计划(2016YFB010600) （2016YFB010600）
