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汽车安全与节能学报

汽车安全与节能学报 ›› 2015, Vol. 6 ›› Issue (02): 128-133.DOI: 10.3969/j.issn.1674-8484.2015.02.003

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基于Euro-NCAP 评价规程行人柔性腿型碰撞试验

刘卫国1，吕晓江1，谷先广2，卢冬梅1，周大永1，孙立志1   

  1. 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，杭州 311228，中国；
    2. 合肥工业大学 机械与汽车工程学院，合肥 230009，中国；
  • 收稿日期:2014-07-15 出版日期:2015-06-25 发布日期:2015-07-08
  • 作者简介:第一作者 / First author ： 刘卫国(1978—)，男( 汉)，山东，总工程师。E-mail: lwg@rd.geely.com 第二作者 / Second author ： 吕晓江工程师。E-mail: lvxiaojiang@rd.geely.com
  • 基金资助:

    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）

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

LIU Weiguo1, L Xiaojiang1, GU Xianguang2, LU Dongmei1, ZHOU Dayong1, SUN Lizhi1   

  1. 1. Geely Automobile Research Institute, Zhejiang Key Laboratory of Automobile Safety Technology, Hangzhou 311228, China;
    2. Hefei University of Technology, School of Mechanical and Automotive Engineering, Hefei 230009, China
  • Received:2014-07-15 Online:2015-06-25 Published:2015-07-08

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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。

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）

Abstract:

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.