关键词: 侧面柱碰撞；约束系统参数；乘员保护；优化方法

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