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汽车安全与节能学报 ›› 2015, Vol. 6 ›› Issue (02): 164-170.DOI: 10.3969/j.issn.1674-8484.2015.02.009

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Euro-NCAP 大腿伤害评价及性能提升

刘珍海,刘松梅,乔磊磊,李 宁,岳国辉,陈现岭   

  1. 长城汽车股份有限公司技术中心,河北省汽车工程技术研究中心,保定 071000,中国
  • 收稿日期:2014-11-15 出版日期:2015-06-25 发布日期:2015-07-08
  • 作者简介:刘珍海(1985 -),男(满),河北,工程师。E-mail: mecl2005@163.com

Femur injury assessing and performance improving according to the Euro-NCAP frontal impacting tests

LIU Zhenhai, LIU Songmei, QIAO Leilei, LI Ning, YUE Guohui, CHEN Xianling   

  1. Great Wall Motors Technology Center, Hebei Auto Engineering Technology Research Center, Baoding 071000, China
  • Received:2014-11-15 Online:2015-06-25 Published:2015-07-08

摘要:

为避免对大腿伤害的修正评价罚分,该文研究了大腿修正评价,归纳了Knee Mapping 方法
的评价流程。对某款车型的评价,是基于欧洲新车评价规程(Euro NCAP)中规定的正面碰撞试验中
对假人大腿伤害的评价方法;设计了大腿伤害评价流程。针对可能造成大腿伤害的硬点——潜在风
险点,用Knee mapping 有限元方法,进行仿真优化分析。结果表明:通过仪表板内部结构预留足够
的变形空间,并在组合开关下护罩内部,设计溃缩吸能结构,有效地降低了大腿伤害值。因此,优
化后的方案,可满足Knee Mapping 大腿受力要求,使得大腿部位免于罚分。

关键词: 汽车工程, 被动安全, 大腿伤害, 主观评价, Knee mapping 测试, 变形空间, 溃缩吸能结构

Abstract:

Femur injurie modifier assessments were investigated and Knee Mapping assessment procedure
was summarized to avoid over-modifiers due to femur injuries. The performances of a vehicle were assessed
according to the assessment method for femur protection in the front offset impact test in the Euro New Car
Assessment Program (Euro NCAP), and an evaluation process of femur injury was designed. Simulation
optimize analysis was done by a Knee Mapping Finite Element method for femur injuries at some potential hard
points (possible injuring femur). The results show that the femur injuries are efficiently reduced by providing
sufficient deformation space in the internal structure of instrument panel, and by designing energy absorbing
structure with foam and metal sheet behind the cover. Therefore, the optimized method satisfies the femur force
requirements of Knee Mapping and can avoid femur over-modifiers.

Key words: automotive engineering, passive safety, femur injuries, modifiers, knee mapping test, deformation space, energy absorbing structure