汽车追尾碰撞保险杠结构的力学特性

针对交通事故中汽车的碰撞问题,运用动量守恒定理和能量守恒定律着重研究了汽车追尾碰撞情况下,汽车碰撞前部主要的结构吸能的优化方法。基于非线性ANSYS/LS-DYNA有限元软件,分析了在车辆的前纵梁部分薄壁梁表面开矩形吸能孔的可行性,取得了优化的薄壁梁的有限元模型,并利用得到的优化模型进行了保险杠碰撞的力学分析。

Mechanical Characteristics of the Vehicle Bumper in Rear Collision

Aiming at vehicle crash in traffic accident ,this paper analyses the optimization method of structure energy absorption of vehicle front past in vehicle rear collision based on the non-linear finite element software ANSYS/ LS-DYNA, several key factors have been analyzed in the model-building process, and the feasibility of energy absorption through retangle hole in the surface of thin-wall structure is analysed. The optimized finite element model is got and used to analyse mechanical characteristics for vehicle bumper.