Abstract: The high chest injury and excessive shoulder force of the front driver in side pole collisions have always been a difficult point in the development of vehicle safety performance. To solve the issues of excessive chest injury and shoulder force on the driver in side pole collisions, it is necessary to study the key constraint system parameters that affect the shoulder force and upper chest injury of driver in the vehicle and provide the optimal constraint system parameter matching scheme. Article uses finite element analysis method and studies the influence of various key factors such as side airbag stiffness, package type, ignition time, and pelvic push block on the chest injury and shoulder force of WorldSID dummy based on the simulation analysis and vehicle test of a new energy vehicle's side pole collision. Optimization method and optimal solutions were proposed to reduce the driver's shoulder force and upper chest injury under side pole conditions. The results show that a reasonable constraint system parameterized matching can effectively reduce the dummy's shoulder force to within 3 kN and the upper chest injury to within 28 mm, providing rational suggestions and guidance for solving the problems of high upper chest injury and excessive shoulder force in the driver under side pole collision conditions.

Key words: side pole crash; restrain system parameter; occupant protection; optimization method

摘要： 侧面柱碰撞工况中前排主驾上胸压大和肩部力超标一直是整车安全性能开发的难点， 为解决柱碰中主驾胸压大和肩部力超标问题，需要对影响车内乘员肩部力和上胸压伤害的关 键约束系统参数进行研究，提供最优的约束系统参数匹配方案。文章基于某新能源车型侧面 柱碰撞仿真分析与整车试验，采用有限元分析的方法，研究了侧气囊刚度、包型、点火时间 和骨盆推动块等多种关键因素对 WorldSID 假人胸部伤害及肩部力的影响，提出了降低侧柱工 况主驾肩部力和上胸压的优化方法和最优方案，结果表明合理的约束系统参数化匹配可有效 降低假人肩部力至 3 kN 以内，上胸压降低至 28 mm 以内，为侧面柱碰工况主驾上胸压大和 肩部力超标问题的解决提供了合理化建议与指导。

关键词: 侧面柱碰撞；约束系统参数；乘员保护；优化方法