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.
出处
《汽车安全与节能学报》
CAS
CSCD
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)
