交通事故抛物地面碰撞力学参数的确定

Determination on Mechanics Parameters of Colliding on Roadway for Throwing Object of Traffic Accident

基于抛物与地面碰撞的广义抛物运动模型 ,本文提出广义抛物抛距方程中因抛体碰撞地面引起的角度损失和速度损失的两个重要力学参数的确定方法。以汽车前照灯罩碎块为例 ,借助高速数字摄像机记录抛体以抛物线以及落地后弹跳和滑动 滚动的运动轨迹。通过抛物对两种地面的碰撞力学特性试验数据的分析 ,经数理统计方法处理获得两个力学参数。

Based on the generalized modeling on trajectory of throwing object colliding with grounds, this paper presents the method to determine two mechanics parameters of velocity loss and of angle loss caused by splinter object falling and then rebounding on ground Trajectory of throwing off object, which is composed of parabolic, springing and rolling movements, are taken by means of a digital high?speed video camera and splinter of headlamp is taken under the consideration as an example By analyzing experimental data of characteristics of throwing objects colliding on two kinds of roadways, two mechanics parameters of generalized parabolic formula are determined by statistical mathematics