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为研究厢式客车与行人碰撞后行人运动形态及其损伤机制,根据国家车辆事故深度调查体系(NAIS)中的一个真实案例,利用Madymo仿真软件,建立厢式客车的前部结构模型和中国50百分位的假人模型。在此基础上进行计算机模拟试验,以人体损伤指标为评价标准,研究不同车速和行人朝向对碰撞后的行人运动形态及损伤的影响。结果表明:车速和行人朝向是影响行人损伤程度的主要因素,行人朝向对碰撞后的行人运动形态影响较大;此外,行人先与厢式客车碰撞一侧的小腿损伤值明显大于后碰一侧,行人与地面二次碰撞造成的头部损伤是导致行人死亡的主要原因。
In order to study the pedestrian movement pattern and its damage mechanism after collision between van and pedestrian, according to a real case of National Vehicle Accident Depth Investigation System (NAIS), using Madymo simulation software, the front structure model of van and China 50 Dummy dummy model. Based on this, the computer simulation test was conducted to evaluate the impact of different vehicle speeds and pedestrian orientation on the pedestrian movement morphology and damage after the collision. The results show that the vehicle speed and pedestrian orientation are the main factors affecting the degree of pedestrian damage. Pedestrian orientation has a great influence on the pedestrian movement after the collision. In addition, The head injury caused by the secondary collision between pedestrians and the ground is the main reason leading to the death of pedestrians.