汽车正面碰撞后排小体位假人伤害研究及优化  

Optimization and Analysis of Injury Prevention for Small-Sized Rear-Seat Dummies in Frontal Car Collisions

作　　者：彭旭东 肖森 刘宸甫 刘闯 何耀昕 PENG Xudong;XIAO Sen;LIU Chenfu;LIU Chuang;HE Yaoxin(School of Mechanical Engineering,Hebei University of Technology,Tianjin 300401,China;Hubei Hangte Equipment Manufacturing,Jingmen 448000,Hubei,China;Great Wall Motor Company Limited,Baoding 071000,Hebei,China)

机构地区：[1]河北工业大学机械工程学院,天津300401 [2]湖北航特装备制造股份有限公司,湖北荆门448000 [3]长城汽车股份有限公司,河北保定071000

出　　处：《汽车工程学报》2024年第2期275-286,共12页Chinese Journal of Automotive Engineering

基　　金：国家自然科学基金项目(52175084,52175085);河北省自然科学基金项目(E2020202017)。

摘　　要：提出了一种相应的伤害优化方案,基于C-NACP正面碰撞工况搭建碰撞分析模型,同时通过与正面100%重叠刚性壁障碰撞试验的HybridⅡ5th女性假人试验数据进行对比来验证模型的可靠性。基于对标结果进行优化设计,对比分析不同优化方案对乘员安全性的影响趋势。确定优化方案,即增加碰撞锁止锁舌、线性预紧器配置,增加座椅刚度,调整安全带限力值。与原始方案相比,在碰撞过程中后排女性假人总体得分提升84%。根据C-NCAP星级评定规程,此后排女性假人得分高于94%,成绩优秀,验证了方案的有效性,可为后排小体位假人伤害的优化研究提供参考。Current research show that female passengers have a lower capacity for injury compared with males when subjected to the same level of harm.Additionally,safety protection for rear-seat passengers is less effective than for those in the front,posing a greater safety risk for smaller individuals in the rear seats during collisions.This study proposes a corresponding injury optimization solution.Firstly,a collision analysis model was constructed based on the C-NACP frontal collision conditions.The reliability of the model was verified through a comparison with data from a frontal collision test,which involved a 100%overlap with a rigid barrier using the Hybrid III 5th female dummy.Subsequently,optimization designs were conducted based on benchmark results,comparing and analyzing the impact of different optimization configurations on passenger safety.Finally,an optimization plan was determined,which included adding collision locking tongues,configuring linear pre-tensioners,increasing seat stiffness,and adjusting seat belt force limit values.In comparison to the original design,the overall score for the rear-seat female dummy during the collision process improved by 84%.According to the C-NCAP star rating criteria,the score for the rear-seat female dummy now exceeds 94%,indicating an excellent performance and validating the effectiveness of the optimization.The methods in this study provide a reference for research on injury optimization for small-sized rear-seat dummies.

关 键 词：正面碰撞 后排女性乘员 乘员约束系统 乘员防护 

分 类 号：U467.14[机械工程—车辆工程]