Numerical simulation of airbag - unfolding can be a powerful tool in the development of a sir ( supplemental inflatable restraint ) system leading to an optimized design and to reduction of development time 汽车安全气囊作为一种辅助的乘员约束系统，在汽车发生碰撞时保护车内乘员的效用已越来越得到肯定。
