Institute for Traffic Medicine, Department 4th, Institute of Surgery Research, Daping Hospital, Army Medical University (Third Military Medical University), Chongqing, China.
College of Vehicle Engineering, Chongqing Institute of Technology, Chongqing, China.
Sci Prog. 2020 Jan-Mar;103(1):36850419892462. doi: 10.1177/0036850419892462. Epub 2019 Dec 23.
There are a very limited number of reports studying on the dynamic response and injuries of pedestrian head in the scenarios with head hitting windshield. This study aims to investigate the significant factors that affect the dynamic response and injuries of pedestrian head through finite element-multi-body coupling simulations. Two finite element vehicle models and two multi-body pedestrian human models were used to build the coupling simulations. Orthogonal experimental design and analysis of variance were used for parameter combination and data analysis. This study demonstrated that the dynamic response of pedestrian head and HIC were strongly associated with collision speed and pedestrian orientation. Vehicle type had a significant influence on the dynamic response of pedestrian head and HIC, while there was no significant relationship between the dynamic response of pedestrian head and HIC and the size of pedestrian human models. Collision speed, pedestrian orientation, and vehicle type should be prioritized over the other collision parameters in the study of head injury mechanism and reconstruction of vehicle-pedestrian collisions in the scenarios with head hitting windshield.
目前针对头部撞击风挡情况下行人头部动态响应和损伤的研究报告非常有限。本研究旨在通过有限元-多体耦合仿真来研究影响行人头部动态响应和损伤的显著因素。使用两个有限元车辆模型和两个多体行人人体模型来建立耦合仿真。采用正交试验设计和方差分析进行参数组合和数据分析。本研究表明，行人头部的动态响应和 HIC 与碰撞速度和行人姿态密切相关。车型对行人头部的动态响应和 HIC 有显著影响，而行人人体模型的大小与行人头部的动态响应和 HIC 之间没有显著关系。在研究头部撞击风挡情况下的行人头部损伤机制和车辆-行人碰撞再现中，应优先考虑碰撞速度、行人姿态和车型等因素，而不是其他碰撞参数。
