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四、汽车与汽车的对称正面碰撞汽车与汽车的对称正面碰撞是指两汽车的纵向对称平面相重合的正面碰撞.汽车与汽车的碰撞比汽车与屏壁的碰撞复杂得多,这是因为两汽车接触的分界面并非静止不动,而是向着某辆汽车移动.此外,汽车的塌陷变形的大小不仅取决于本辆汽车的结构参数和运动状态,而且还取决于另一辆汽车的结构参数和运动状态. 如前所述,在不考虑滚动阻力、空气阻力等外力影响的情况下,可把两辆汽车看作一个封闭系统,在碰撞时这个系统应遵守动量守恒原理,即
4. Symmetrical frontal collision of automobile and automobile Symmetrical frontal collision of automobile and automobile refers to the frontal collision that the vertical symmetrical planes of two cars coincide with each other.The collision between automobile and automobile is much more complicated than the collision between automobile and screen wall, The interface of vehicle contact is not static, but moves toward a vehicle.In addition, the size of the collapse of the vehicle depends not only on the structural parameters of the vehicle and the state of motion, but also on the structural parameters of another vehicle As mentioned above, the two vehicles can be regarded as a closed system without considering the influence of rolling resistance, air resistance and other external forces, and the system should observe the principle of momentum conservation