摘要
为探究轿车-自行车事故中骑车人的骑行姿态对其头部损伤的影响规律,首先采用PC-Crash软件建立自行车、骑车人和轿车模型,进行4组不同背角范围的仿真并分析骑车人骑行姿态对头部损伤的影响。接着,从中国交通事故深入研究(CIDAS)数据库中挑选出79例轿车-自行车事故,用于分析实际案例中坐姿对头部动力学响应的影响。最后,通过多项式拟合,建立了在4个姿态分组下,头部碰撞速度、绕转距离和损伤程度与车速之间关系的数学模型。结果表明:骑车人头部的损伤程度随轿车碰撞速度的升高而增大,但随骑车人的背角的增大而减小。
In order to investigate the influence of the riding posture on the head injury of cyclist in ear-bicycle crash accident, firstly the models for bicycle, cyclist and ear are built by using software PC-Crash and simulations on four groups of different ranges of cyclist＇s back angle are conducted to analyze the effects of riding posture on the injury of cyclist. Then 79 eases of ear-bicycle crash accidents are selected from China in-depth accident study （CIDAS） database to analyze the effect of riding posture on the head dynamics response of cyclist in real eases. Finally by using polynomial fitting, the mathematical models of the relationship between the head impact velocity, wrap around distance and injury severity of cyclist and ear speed are established for four posture groups. The results show that the injury severity of cyclist increases with the rise of ear crash speed, but lowers with the increase of cyclist＇s back angle.
作者
胡林
程启寅
黄晶
陈强
张新
Hu Lin;Cheng Qiyin;Huang Jing;Chen Qiang;Zhang Xin(School of Automotive and Mechanical Engineering,Changsha University of Science and Technology,Changsha 410114;Changsha University of Science and Technology,Hunan Province Key Laboratory of Safety Design and Reliability Technology for Engineering Vehicle Changsha 410114;Hunan University,State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body,Changsha 410082;China Automotive Technology and Research Center,Tianjin 300162)
出处
《汽车工程》
EI
CSCD
北大核心
2018年第11期1294-1301,共8页
Automotive Engineering
基金
国家自然科学基金(51475048,51775178)、湖南省自然科学基金(2017JJ2034)和湖南省教育厅重点项目(17A004)资助.
