某轿车保险杠横梁结构抗撞性优化

摘要

针对某轿车在进行车速为56 km/h的正面40％偏置碰撞试验中,前保险杠横梁断裂、乘员舱侵入过大问题,主要从抗弯性能和材料等方面对前保险杠横梁提出改进方案,并利用有限元仿真方法对保险杠横梁改进方案进行仿真计算.试制改进方案样件进行了车速为56 km/h的正面40％偏置碰撞试验,试验结果表明,改进方案解决了原保险杠横梁断裂问题,提高了保险杠横梁的耐撞性能.%In the frontal 56 km/h 40% offset impact test, the front bumper beam ruptures and the extra impact energy passes to the passenger compartment which make the greater intrusion to the passenger compartment. To solve such problems, an improvement plan of the front bumper beam is given according to the performance of bending-resistance and material. Computation of the front bumper beam was performed with the FE simulation, and then the complete vehicle 56 km/h 40% offset deformable barrier impact test with the improved structures was carried out. As a result, the optimized bumper beam eliminated the cause of bumper beam rupture, and obviously improved its crashworthiness.