材料性能对汽车碰撞散落物运动特性的影响

为研究汽车碰撞散落物的材料性能对其运动特性的影响,进一步完善交通事故再现中汽车碰撞散落物的运动行为理论模型,建立汽车碰撞散落物的运动学仿真模型,通过仿真试验,模拟了在散落初始条件相同的情况下,汽车碰撞弹性、弹塑性、塑性散落体的运动,分析了在试验条件一定时,3种材料巨能的汽车碰撞散落体的运动特性的异同及其随散落速度、散落高度、散落角度的变化关系.模拟试验结果分析表明:存在散落角度的汽车碰撞散落体其非线性运动轨迹受材料性能影响较大.

Effect of Material Nature on Dynamic Characteristic of Debris in Vehicle Crash

In order to investigate the influence of material nature on debris's dynamic characteristic and complete the dynamic model furthermore for accident reconstruction,the dynamic simulated model of debris yielded in vehicle crash was set up.The dynamic characteristic and the relation between thrown distance and velocity,height,angle were analyzed by simulating test for elastic,elastic-plastic,plastic debris in condition of testing conditions is certain.The result is shown that material nature has strong effect on non-linear geometric locus of debris with thrown angle in vehicle crash.