二次碰撞

含第二次碰撞的车对车碰撞事故模拟计算模型研究

A Study on Simulation Model for Car-to-car Crash and their Second Impact in Traffic Accidents

蒙特卡罗计算点通量的二次碰撞概率方法和重要抽样方法

Quadratic collision probabilistic method and importance sampling method of Monte Carlo calculation for flux at a point

假人模型中的有关头部伤害指标和大腿伤害指标的计算结果表明，列车碰撞及其乘员二次碰撞是导致乘客伤害的关键原因。

The numerical results of head injury criterion and leg injury criterion show that train crashworthiness and secondary collisions are the key reasons to result in passenger injury .

汽车在碰撞中利用乘员保护系统的约束作用避免或减缓乘员与车内结构二次碰撞对乘员造成的伤害。

Damage caused by the second collision of inside parts of car to the passengers during automobile collision may be avoided or lightened by means of the restraining system of passenger protection system .

汽车安全气囊乘员约束系统作为一种有效的被动安全保护设备，它可有效地降低乘员在碰撞中所承受的减速冲击和二次碰撞力，是乘员在汽车碰撞中重要、有效的保护措施。

As effective passive safety protection equipment , automobile airbag assistant restraint system can effectively reduce the impact force in a collision ; it is an important and effective protection measure for occupants during collisions .

“二次碰撞”是造成人体损伤的直接原因，但“一次碰撞”在很大程度上决定了“二次碰撞”的剧烈程度，因此“一次碰撞”对人体损伤有很大影响。

" Second impact " gives efficient cause for passenger injury , but " first impact " decides on exquisite degree of " second impact " to a large extent , so " first impact " has a large effect on passenger injury .

检验结果表明：在不考虑事故车辆发生二次或多次碰撞的前提下，该模型能够较准确地描述二维碰撞事故过程中车辆的运动轨迹。

The results indicate that the trajectory reconstruction model can describe the movement trajectory of vehicle in the course of two-dimension collision accidents exactly without considering the instances of twice or more times impacts .