现代制造工程Issue(2)：44-51,8.DOI:10.16731/j.cnki.1671-3133.2017.02.009
汽车车身耐撞框架结构设计研究
Research on crashworthy frame structures design of vehicle body
摘要
Abstract
To solve the issue on topology optimization of crashworthy frame structures design of vehicle body,a crashworthy topology optimization method based on energy controlled behavior in Hybrid Cellular Automaton(HCA) was proposed.Applied LS-DYNA explicit FEM,Hybrid Cellular Automaton (HCA) was taken as computational model and the local change in the design variable was determined by local control rules.In topology domain two connected subdomains were defined:a flexible subdomain and a stiff subdomain with constraint of different design dimensions,mass fraction and energy controlled behavior.Then the topology optimization on single load case and multiple load case were designed to verify the feasibility and accuracy of this approach.Finally,a bumper-like design was taken as an example and the crashworthy was proved to be increased,which promised a high engineering practicability.关键词
耐撞性/拓扑优化/能量控制/混合元胞自动机Key words
crashworthy/topology optimization/energy controlled/Hybrid Cellular Automaton (HCA)分类
交通工程引用本文复制引用
谭纯,陈涛,杨枫..汽车车身耐撞框架结构设计研究[J].现代制造工程,2017,(2):44-51,8.基金项目
国家高技术研究发展计划(863计划)项目(2012AA111802) （863计划）
