Simulation on the form and kinematics law of contacting process for car/pedestrian collision

Pedestrian protection project is presently the key aim in the fields of traffic safety and vehicle passive safety, which is attached to great importance by numerous researchers at home and abroad. Based on PC-Crash program for simulation and reconstruction of road accident and in-line MADYMO program for multi-body system dynamics analysis, the kinematics law and characteristics of pedestrian in the contact process for vehicle-pedestrian collision are analyzed with modeling. By modeling vehicle and pedestrian, and selecting main factors influencing on contact phase for vehicle-pedestrian collision as independent variables for simulation tests, which include the shape and geometry of vehicle front-end, motion conditions of vehicle in collision process (constant speed, accelerating, decelerating etc), as well as size and initial motion conditions of pedestrian at the moment of pre-impact (standing, walking, jogging, running etc), the form characteristics and kinematics law of pedestrian as well as corresponding vehicle impact speed threshold in the contact phase of vehicle-pedestrian under different collision circumstances are in depth researched. The comparisons of simulation results with real world vehicle-pedestrian collisions under observation as well as crash tests results have shown that a perfect harmony and consistency of kinematics law of pedestrian. Kinematics law of pedestrian in the contact process for vehicle-pedestrian collision is in depth mined by applying simulation technique, which can not only offer fully and accurately basic data to analyze kinematics law and kinetics law of pedestrian under different collision forms, but also provide powerful theoretical and technical support for technology appraisal of traffic accidents. The results in this paper will be of an important value in China.