基于汽车-自行车碰撞事故重建的骑车人动力学响应和损伤研究

发布时间：2018-05-26 08:38

本文选题：事故重建 + 自行车骑车人　；参考：《汽车工程》2015年02期

【摘要】：首先从深入调查的交通事故数据库中挑选出与轿车碰撞的自行车事故案例24例,运用轿车-自行车/骑车人碰撞的多体动力学模型进行了事故重建。然后在此基础上分析了典型碰撞形态下自行车骑车人的动态响应过程和骑车人头部碰撞条件(如头部碰撞速度、碰撞时间和碰撞角度)与车辆碰撞速度的关系,并进一步研究了骑车人身体各部位损伤分布和头部损伤与下肢骨折风险。结果表明:自行车骑车人头部绕转距离(WAD)、碰撞速度、碰撞时间、碰撞角度和骑车人的抛出距离与车辆碰撞速度之间存在较强的相关性;车辆碰撞速度和抛出距离对骑车人损伤有明显影响;骑车人头部AIS 2+、AIS 3+损伤风险和下肢骨折风险与车辆碰撞速度显著相关。
[Abstract]:First, 24 cases of bicycle accidents that collided with cars were selected from the database of traffic accidents investigated in depth, and the accident reconstruction was carried out by using the multi-body dynamics model of passenger car / bicycle / cyclists collision. Then, the dynamic response process of cyclists and the relationship between the collision conditions (such as head collision velocity, collision time and impact angle) and vehicle collision velocity are analyzed. The distribution of injuries and the risk of head injury and lower limb fracture in cyclists were further studied. The results show that there is a strong correlation between the collision velocity, collision time, collision angle and the ejection distance of the cyclists. The impact speed and ejection distance of vehicle have obvious influence on the injury of cyclists, and the risk of head AIS _ 2 / AIS _ 3 injury and fracture of lower extremities are significantly correlated with the vehicle impact velocity.
【作者单位】：湖南大学汽车车身先进设计制造国家重点实验室;娄底职业技术学院;查尔摩斯理工大学应用力学系;
【基金】：湖南省科技计划项目(2014SK3213) 国家863计划项目(2006AA110101) 国家自然科学基金(51205119) 湖南大学汽车车身先进设计制造国家重点实验室自主研究课题(61075004)资助
【分类号】：U491.31

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