汽车侧面碰撞中乘员约束系统的可靠性优化

在汽车侧面碰撞中，约束系统对降低乘员的伤害起到非常重要的作用.本文采用MADYMO仿真分析软件，建立某车型侧面碰撞的约束系统仿真模型；考虑了髋部推动块的压溃力、气囊起爆时间、气体质量流量和气袋排气孔面积对乘员损伤的影响，建立了乘员损伤指标的响应面模型；基于蒙特卡罗随机模拟，进行了侧面碰撞乘员约束系统的可靠性优化.结果表明，优化后的约束系统设计方案满足可靠性目标要求.

Reliability Optimization of Occupant Restraint System in Side Impact Tests

Restraint system is very important to the reduction of occupant injury risks in side impact tests. The restraint system model of the car driver side in side impact was built by using MADYMO simulation software. Considering the effect of the yielding force of pelvis energy absorber, airbag triggering time, inflator mass rate and ventilation hole size on dummy injury results, the response surfaces of occupant injury criteria were created and the reliability optimization of the occupant restraint system was carried out on the basis of Monte -Carlo stochastic simulation. The results have shown that the optimized restraint system scheme can meet the reliability design requirements.