摘要
建立了整车侧撞有限元模型。通过与碰撞试验结果对比验证了该模型的可靠性。考虑汽车侧围结构的碰撞安全性,由整车侧撞有限元模型导出了侧围子结构模型。采用响应面法进行了车身侧围结构仿真优化。仿真结果表明:基于响应面法的子结构模型可将汽车侧撞安全性优化时间缩短至传统整车模型方法的五分之一。优化后的胸部损伤指标明显降低,满足侧撞乘员保护要求。
A finite element model of a full-scale vehicle in side impact was developed. The validity of the model was evaluated through a comparison with crash test results. Considering crash safety of the car side structure, a sub-structure model of the car side assembly was derived based on the side impact finite element model Simulation and optimization of the car side structure were carried out using response surface method （RSM）. The results of the simulation demonstrate that the duration of sub-structure model optimization using response surface method can be reduced to one fifth, comparing with traditional method using full scale model The injury related parameter thorax-trauma-index （TTI） was optimized to lower level and meet the requirement of occupant protection from side impact.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2009年第12期3850-3854,共5页
Journal of System Simulation
基金
国家自然科学基金(10472031)
科技部863项目(2006AA110101)
关键词
子结构模型
响应面法
侧撞安全性
优化
sub-structure model
response surface method
side impact safety
optimization
