基于试验数据的aPLI腿型和Flex-PLI柔性腿差异性分析  

Differential Analysis of aPLI Legform and Flex-PLI Flexible Legform Based on Experimental Data

作　　者：李晶 崔义忠 Li Jing;Cui Yizhong(Automotive Safety Testing Research Laboratory,Shanghai Motor Vehicle Testing Research Center,shanghai 200135,China)

机构地区：[1]上海机动车检测研究中心汽车安全检测研究实验室,上海200135

出　　处：《机电工程技术》2025年第1期146-151,共6页Mechanical & Electrical Engineering Technology

摘　　要：行人作为弱势道路使用者,在交通事故中伤残的比例极高。交通事故中行人下肢的损伤是致残的重要原因,因此对行人下肢的保护能力是评价车辆行人保护性能的重要考核标准。当前评估车辆对行人下肢的保护能力使用的腿型冲击器主要是aPLI腿型和Flex-PLI柔性腿,两种腿型对相同型号同一试验位置的运动姿态响应和损伤响应存在差异,因此基于腿型冲击试验的数据深入分析两种腿型的运动响应和损伤响应的差异性。研究发现,在整个冲击过程中,aPLI腿型在初始阶段保持竖直状态,中后阶段呈现“C”形的运动姿态,Flex-PLI柔性腿始终保持竖直状态;aPLI腿型的大腿和MCL损伤峰值,峰值时间以及曲线走势方面与Flex-PLI柔性腿差异较大,aPLI腿型的小腿在损伤峰值方面与Flex-PLI柔性腿差异较大,在峰值时间和曲线走势方面基本保持一致。As vulnerable road users,pedestrians have a high proportion of disability in traffic accidents.The lower limb injury of pedestrians in traffic accidents is an important cause of disability,so the lower limb protection ability of pedestrians is an important assessment standard to evaluate the pedestrian protection performance of vehicles.The leg impactors currently used to evaluate the vehicle\s ability to protect pedestrians\lower limbs are mainly aPLI legform and Flex PLI flexible legform,there are differences in the motion posture response and injury response of two leg types to the same model and test position.Based on the data analysis of legform impact test two legs motion response and damage response.It is found that,during the entire impact process,the aPLI maintains a vertical position in the initial stage and exhibits a“C”-shaped motion posture in the middle and later stages,while the Flex-PLI always maintains a vertical position;the peak values,peak times,and curve trends of femur and MCL in aPLI are significantly different from those in Flex-PLI,while the peak values of tibia in aPLI are significantly different from those in Flex-PLI,and are basically consistent in peak times and curve trends.

关 键 词：aPLI腿型 Flex-PLI柔性腿 运动响应 损伤 差异性 

分 类 号：TP249[自动化与计算机技术—检测技术与自动化装置]