基于摩擦系数优化的车人碰撞事故再现研究

The Friction Biomechanics Characteristic Analysis for the Car-pedestrian Collision Traffic Accidents

行人摩擦生物力学特性对车人碰撞事故再现结果有直接的影响,但由于人体结构的复杂性和交通事故的突发性特点,导致行人与汽车、道路的接触特性很难通过试验的方式获取,本文探讨了基于仿真试验的车人碰撞事故行人摩擦生物力学特性分析方法,并通过蒙特卡罗方法验证摩擦特性的可靠性.将该特性应用于车人碰撞类型的交通事故过程再现进行验证,仿真结果表明:所得到的摩擦特性精度高、可靠性高,能够满足车人碰撞交通事故再现对行人摩擦特性精度要求,为交通事故中所涉及的行人摩擦生物力学特性分析提供了新的途径.

The characteristics of pedestrian- friction -biomechanics （PFI） have direct influence on the result of those traffic accidents in which car - pedestrian collision was involved. Because of the complexity of body constitution and emergency of traffic accident, it is difficult to acquire the contact characteristics of the pedestrian and the automobile as well as the pedestrian and the path by means of experimentation. The friction biomechanics characteristic of the car - pedestrian collision traffic accident based on simulation test was discussed and its validity was testified by Monte Carlo method. The characteristic is applied to the traffic accidents with car - pedestrian collision for confirmation. The simulation results showed that the friction characteristics have high precision and reliability and can meet the requirement to friction biomechanics characteristic in the car- pedestrian collision traffic accidents. The friction characteristic provided a new pathway for the friction biomechanics characteristic of pedestrian in traffic accidents.