摘要
针对国内某款混合动力电动汽车(HEV)的结构特点,建立了车辆后碰撞有限元仿真模型,利用有限元理论分析和优化车辆的安全性能方案,对比新能源车和原型车的弯曲模态、扭转模态和扭转刚度,并通过控制动力电池箱的X向位移和后排座椅靠背上部的Z向挂钩位移,对现有的结构方案和整车后碰撞安全性进行优化和改进.结果表明,该HEV的弯曲和扭转模态、扭转刚度等接近或达到常规车辆标准.实车后碰撞试验证明,改进的安全结构完全可以满足设计要求.
According to the structural characteristics of a domestic hybrid electric vehicle（HEV）,a simulation model to describe the rear-end collision is established based on the finite element analysis to analyze and optimize the safety of the vehicle.Then,the bending mode,the torsional mode and the torsional stiffness of the HEV are calculated and compared with those of the prototype vehicle.Moreover,by controlling the displacements in both the X direction of power battery box and the Z direction of hook at the upper backrest of back row seat,the existing structure and safety of the whole-vehicle rear-end collision are optimized and redesigned.The results show that the HEV comes up to the standard of conventional vehicles in terms of bending mode,torsional mode and torsional stiffness,etc.The rear-end collision test of a real vehicle proves that the improved security structure meets the design requirements well.
出处
《华南理工大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2011年第11期138-143,共6页
Journal of South China University of Technology(Natural Science Edition)
基金
国家军品配套科研项目(JPPT-115-5-1805)
浙江省公益技术应用研究项目(2011C31SA300038)
关键词
混合动力电动汽车
后碰撞试验
安全性
有限元分析
试验研究
hybrid electric vehicle
rear-end collision test
safety
finite element analysis
experimental investigation
