Effects of the windshield inclination angle on head/brain injuries in car-to-pedestrian collisions using computational biomechanics models  

作　　者：Fang Wang Mingliang Wang Lin Hu Ke Peng Jiajie Yin Danqi Wang Liangliang Shi Zhou Zhou 

机构地区：[1]School of Automotive and Mechanical Engineering,Changsha University of Science and Technology,Changsha 410114,Hunan,China [2]Hunan Province Key Laboratory of Safety Design and Reliability Technology for Engineering Vehicle,Changsha University of Science and Technology,Changsha 410114,Hunan,China [3]State Key Laboratory of Vehicle NVH and Safety Technology,China Automotive Engineering Research Institute Co.,Ltd.,Chongqing 401122,China [4]Division of Neuronic Engineering,KTH Ro y al Institute of Technology,Stockholm 14152,Sweden

出　　处：《Transportation Safety and Environment》2024年第2期1-12,共12页交通安全与环境（英文）

基　　金：supported by the National Natural Science Funds for Distinguished Young Sc holar(Gr ant No.52325211);National Natural Science Foundation of China(Grants No.52172399 and 52372348);Science and Technology Innovative Research Team in Higher Educational Institutions of Hunan Pro vince,Natural Science Foundation of Changsha(Grant No.KQ2208235);Chongqing Ph.D.‘Through Train’Scientific Research Project(Grant No.s1202100000528).

摘　　要：Car-to-pedestrian collision(CPC)accidents occur frequently,and pedestrians often suffer serious head/brain injuries.One major cause is the primary impact with the windshield.Here,we use an umerical sim ulation method to study the influence of the windshield in-clination angle of a passenger car on pedestrian head/brain injury due to CPC accidents.The range of the windshield inclination angle was set at 24°-50°,with an interval of 2°.The results show that the windshield angle significantly affects the pedestrian kine-matics and exerts different effects on the head injury when evaluating with various head injury criteria.Regarding the head peak linear/rotational acceleration and acceleration-based head injury criterion(HIC)/rotational injury criterion(RIC),the predictions at the secondary impact stage have no clear relationship with the windshield angle(R^(2)=0.04,0.07,0.03 and 0.26,respectively)and their distributions are scattered.In the primary impact,the peak linear acceleration and HIC show a weak trend of first decreasing and then increasing with the increasing of the windshield angle,and the rotational acceleration and RIC tend to remain relatively con-stant.Regarding the cum ulative strain dama ge measure(CSDM)criterion,the predictions at the primary impact are slightly lower than those at the secondary impact,and the trend of first decreasing and then increasing with the increase in the windshield angle is observed at both impact stages.When the windshield inclination angle is approximately 32°-40°,the head injury severity in both impact phases is generally lower than that predicted at other windshield angles.

关 键 词：car-to-pedestrian collision(CPC) head/brain injury head injury criterion(HIC) windshield inclination angle computa-tional biomechanics model(CPCBM) 

分 类 号：U467.14[机械工程—车辆工程] U492.8[交通运输工程—载运工具运用工程]