基于Euro-NCAP评价规程行人柔性腿型碰撞试验  

Tests of pedestrian flexible legform base on Euro-NCAP assessment protocol

作　　者：刘卫国[1] 吕晓江[1] 谷先广[2] 卢冬梅[1] 周大永[1] 孙立志[1] 

机构地区：[1]浙江吉利汽车研究院有限公司浙江省汽车安全技术研究重点实验室 [2]合肥工业大学机械与汽车工程学院

出　　处：《汽车安全与节能学报》2015年第2期128-133,共6页Journal of Automotive Safety and Energy

基　　金：国家自然科学基金资助项目(51405123);浙江省汽车安全技术研究重点实验室项目(2009E10013)

摘　　要：为了减少行人小腿碰撞伤害,参考2014年版的欧盟新车评价规程(Euro-NCAP),对某车型进行柔性腿型(Flex-PLI)碰撞试验;评估了行人小腿碰撞得分,以此来分析影响胫骨伤害及膝部伤害的关键因素。结果表明:车辆前端与胫骨接触位置结构刚度对胫骨弯矩值影响较大;膝部韧带伸长量与膝关节上部及下部相对运动有关。因此设计时,应避免因车辆前端结构刚度过强导致胫骨弯矩超标准;应通过调整膝关节上部及下部侵入量来改善膝部韧带伸长量。这些结论,可为改进车辆前端设计提供参考。Flexible legform impactor （Flex-PLI） impact tests were done for a type of vehicle base on the European New Car Assessment Program （Euro-NCAP） to reduce the impact injure onto pedestrian lower legform. The key factors influencing the tibia injury and knee injury were analyzed based on the scores by the Euro-NCAP assessment. The results show that vehicle front contact with tibia position stiffness has a great influence on bending moment, and knee ligament elongation is associated with upper and lower relative motion of knee joint. So that, the front-end structure design should avoid tibia bending moment being exceed the standard caused by the great stiffness of vehicle front structure; and the design should adjust the knee when upper and lower amount of intrusion to improve knee ligament elongation. These conclusions will provide practice in front-end structure design for new vehicles.

关 键 词：汽车安全 行人保护 碰撞试验 柔性腿型(Flex—PLI) 欧盟新车评价规程(Euro—NCAP) 

分 类 号：U491.61[交通运输工程—交通运输规划与管理]