关键词: 汽车安全性, 25%小偏置正面碰撞, 车体结构评价, 结构改进

Abstract:

Comparing with the full frontal crash and the 40% offset crash,the differences and similarities of the vehicle structure deformation in the 25% small overlap frontal crash were  analyzed.Based on the deformation characteristics of the vehicle structure in the small overlap frontal crash,the optimization measures of the vehicle front end structure were proposed,which included improving structures and strengthening materials.The optimized vehicle model was tested in the 25% small overlap crash virtual experiments.And the results show that the performance of the vehicle structure is improved significantly and the intrusion of the passenger compartment decreases obviously.Through verifying the deceleration pulses in the full frontal crash and the 40% offset frontal crash,the stiffness of the improved vehicle model is proved to be properly configured and has no effect on the match of the occupant restraint system.

Key words: vehicle safety, 25% small overlap frontal crash, vehicle structural rating, structural improvement