基于材料特性的车辆碰撞事故抛落物运动学研究

Scatter object's characteristics on throwing objects of vehicle collision has important effects on the motion law of throwing objects. Generlized kinetics model was developed to use vehicle crash formed scatters in the vehicle crasht reconstruction. The collision scatter simulation tests were carried out at the same initial velocity of vehicle collision. Scatters movements of the collision scatter after landing are consit of those of elasticity and plasticity and the plastic. In test conditions, the similarities and differences of the kinetic characteristics for the material properties of the three kinds of collision scatters was analyzed, and changes of the kinetic characteristics were involved in scatter throwing speed, height and the angle. Simulation tests show that the large effect of material properties of scattes on nonlinear trajectory of the vehicle collision scatter with throwing angle. It is shown that generlized kinetics model would provide the theoretical basis for anslyzing traffic accident.