汽车儿童安全座椅碰撞性能仿真分析与评价

摘要

根据欧洲儿童乘员约束系统法规（ ECER44）的要求，建立提篮式儿童安全座椅有限元模型和1．5岁假人有限元模型，构造安全带约束系统，获得儿童安全座椅碰撞性能仿真分析有限元模型。应用有限元软件LS-DYNA仿真分析正碰过程，得到碰撞过程中假人运动形态、假人头部和胸部的加速度。仿真分析结果与对应的实验结果一致，验证了儿童安全座椅碰撞有限元模型的正确性。%According to requirements of the European child occupant restraint system regulations ( ECER44 ) , it builds the child safety seats collision performance simulation finite element model with the establishment of bas -ket-type child safety seats and 1 .5-year-old dummy finite element model .Based on the finite element analysis software LS-DYNA simulation of the frontal-impact process , it obtains the dummy movement patterns , the dummy's head and chest acceleration during the collision course .The simulation analysis of consistency with the experi-mental results shows that the impact of child safety seats finite element model is correct .