汽车工程学报2025，Vol.15Issue(5)：674-686,13.DOI:10.3969/j.issn.2095-1469.2025.05.04
基于主被动融合低速工况下的行人头部碰撞特征研究
Research on Pedestrian Head Impact Characteristics Under Low-Speed Active-Passive Fusion Conditions
摘要
Abstract
With the continuous improvement of automotive electrification and intelligence,intelligent driver assistance systems have been widely utilized.The integration of automatic emergency braking(AEB)can effectively reduce vehicle-to-pedestrian impact speeds in real traffic crashes.In emerging AEB-VRU active-passive fusion scenarios,pedestrian collision dynamics and their biomechanical injury responses also change.So far,researchers still lack a clear understanding of pedestrian-vehicle collisions in these fusion scenarios.Therefore,the paper first analyzes the current passive and active assessment workflows.It then builds a THUMS-vehicle finite-element collision model in LS-DYNA,and develops a method to measure and evaluate the kinetic parameters of pedestrian head impacts.Using boundary conditions extracted from the simulations,the paper performs a correlation analysis of head impact kinematics in the main active-passive fusion scenarios.The results show that the pedestrian head-impact angle decreases with the increase of vehicle speed.A compact SUV with a higher height of the bonnet leading edge reference line produces larger head-impact angles than a sedan.Considering the influence of pedestrian posture,a child experiences a larger head-impact angle than an adult.When the vehicle brakes,the head-impact angle decreases as the vehicle's pitch angle under braking increases.Through the analysis of the relationship between head kinematics and head injury,the reliability of the kinematic findings for vehicle-pedestrian collision was further verified.关键词
主被动融合/THUMS假人/碰撞速度与角度/头型伤害指数HIC15Key words
active passive fusion/THUMS dummy/collision velocity and angle/head injury criterion HIC15分类
交通工程引用本文复制引用
陈香,黄皓,曾董,高婕,凌越,叶彬,龙永程,刘煜..基于主被动融合低速工况下的行人头部碰撞特征研究[J].汽车工程学报,2025,15(5):674-686,13.基金项目
重庆市自然科学基金博士"直通车"项目(CSTB2023NSCQ-BSX0011) （CSTB2023NSCQ-BSX0011）
