衝撃入力時の車両運動モデルに関する基礎的検討

抄録

A traffic accident is one of the most important social problems. Many active or passive safety systems for vehicles have been developed to reduce damage of traffic accidents. It is serious to avoid collision with other objects, reduce external force applied to vehicles when a traffic accident occurs, and regulate vehicle locomotion after a traffic accident such as pileup. In this study, a novel passive model was proposed in order to regulate vehicle locomotion after impact. The proposed model has a free extra mass and two spring-mass systems placed at the forward and backward end on the vehicle, called damper mass and collision masses respectively. The damper mass repeatedly collides against collision masses during vehicle locomotion after impact. Whole kinetic energy is dissipated by inelastic collision and friction, which reduces the vehicle velocity. The effect of the proposed model on the vehicle locomotion when several physical parameters were changed was verified via numerical simulations.