某微车正面碰撞模拟仿真与优化

Simulation and optimization for one mini-bus frontal crashworthiness

近几年我国微型客车行业得到了很大发展,随着我国正面碰撞法规—CMVDR的颁布,为了通过法规规定,各个车企纷纷加大研发力度。微型客车的发展不仅仅是数量的增加,更应该把重点放在提高汽车的安全性能方面,尤其是放在提高微型客车的正面碰撞安全性能。在此背景下,对国内某款微型客车为研究对象,对其与正面刚性墙碰撞的过程进行了有限元模拟仿真。通过对比计算机模拟结果与实车试验结果,验证此模型准确性,同时针对车身薄弱环节提出改进方案,并且进行前后方案对比,最终确定改进方案。

In recent years mini-bus industry is developed greatly in China,with the issue of our na-tional frontal crash laws-CMVDR 294,every mini-bus company engages more effort in developing and re-searching in order to satisfy the regulations.As we know the development of mini bus is not merely the in-crease of the number,what we should do is to lay a stress on the safety of the bus,especially the safety per-formance improving in frontal crash.It akes a domestic mini-car as research object,and then FEM simula-tion for the bus in frontal crash against rigid wall is carried out.The results of computer simulation and practical car experiment are compared to rectify the validity of the model.At the same time,improvement scheme is put forward specific to vulnerable spot of the bus and ultimately the improvement scheme will be determined after comparing the previous scheme to the later one.