CAJ | 학술논문

对比分析25％小偏置正面碰撞车体结构变形与正面全宽和40％偏置碰撞车体结构变形异同点。针对小偏置碰撞车体结构变形特点提出车体前端结构优化措施，优化措施包括结构改进与材料加强两个方面。对优化后的整车模型进行25％小偏置碰撞虚拟实验，结果表明车体结构优化效果显著，乘员舱侵入量明显减小。进行了正面全宽和40％偏置碰撞工况下的减速度波形验证，证明改进整车模型刚度配置合理，不会影响乘员约束系统的匹配。
대비분석25％소편치정면팽당차체결구변형여정면전관화40％편치팽당차체결구변형이동점。침대소편치팽당차체결구변형특점제출차체전단결구우화조시，우화조시포괄결구개진여재료가강량개방면。대우화후적정차모형진행25％소편치팽당허의실험，결과표명차체결구우화효과현저，승원창침입량명현감소。진행료정면전관화40％편치팽당공황하적감속도파형험증，증명개진정차모형강도배치합리，불회영향승원약속계통적필배。
Comparing with the full frontal crash and the 40% offset crash,the differences and simi-larities 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 over-lap crash virtual experiments.And the results show that the performance of the vehicle structure is im-proved significantly and the intrusion of the passenger compartment decreases obviously.Through ver-ifying 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.