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汽车安全与节能学报

汽车安全与节能学报 ›› 2014, Vol. 5 ›› Issue (03): 289-293.DOI: 10.3969/j.issn.1674-8484.2014.03.011

• 汽车安全 • 上一篇    下一篇

泡沫与塑料静态压溃分析及在行人小腿碰撞中验证

吕晓江1，孙立志1，朱麟凯1，周大永1,2，刘卫国1,2   

  1. 1. 浙江吉利汽车研究院有限公司，杭州 311228，中国；2. 浙江省汽车安全控制技术重点实验室，杭州 311228，中国
  • 收稿日期:2014-05-30 出版日期:2014-09-25 发布日期:2014-10-08
  • 通讯作者: 刘卫国，总工程师。E-mail: lwg@rd.geely.com
  • 作者简介:吕晓江(1982 － )，男( 汉)，河北，工程师。E-mail: lvxiaojiang@rd.geely.com
  • 基金资助:

    浙江省汽车安全技术研究重点实验室项目（2009E10013）

Static crushing analysis and test validation for foam and plastic in pedestrian lower legform impact

LV Xiaojiang , SUN Lizhi , ZHU Linkai , ZHOU Dayong , LIU Weiguo   

  1. 1. Geely Automobile Research Institute, Hangzhou 311228, China;
    2. Zhejiang Key Laboratory of Automobile Safety Technology, Hangzhou 311228, China
  • Received:2014-05-30 Online:2014-09-25 Published:2014-10-08

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摘要： 研究了行人保护小腿碰撞时，车辆前端材料的吸能性能。先对3 种不同密度的泡沫和1 种塑料，
进行静态压溃性能试验。在此基础上，选择吸能较好的30 g/dm3 的泡沫和这种塑料，在某款运动
型多功能车(SUV) 车上，测量了行人保护小腿碰撞试验中样件的吸能性能。结果表明：静态压溃试验
中，该种塑料的整体性能优于泡沫，塑料试验的峰值载荷、平均载荷、总吸能为泡沫试验的4 倍以上，
塑料试验的质量比吸能也高于泡沫的。因此，在相同吸能空间条件下，采用塑料作为车辆前端吸能材
料，能够降低行人小腿胫骨加速度及膝部弯曲角，因而，有利于改善行人小腿碰撞安全性。

关键词: 汽车安全, 行人保护}, 小腿碰撞, 泡沫, 塑料, 静态压溃试验

Abstract: Energy absorption performance of vehicle front-end material was studied when pedestrian legform
impacts the vehicle. On foams of three different densities and one kind of plastic, static crushing performance
experiment was carried out. On this basis, the density of 30 g/dm3 foam and the plastic were chosen which have
better energy absorption. In a certain kind of sport utility vehicle (SUV) car, energy absorption performance of
the pedestrian protection test samples was measured. The results show that at the static crushing experiments,
overall performance of this kind of plastic is better than that of the foam. The plastic peak load, average load,
total energy absorption are increased more than 4 times the foam, and the energy absorption per mass is also
higher than the foam. Therefore, under the condition of the same energy absorption space, using plastic as the
vehicle front-end energy absorption material can reduce the pedestrian leg tibia acceleration and knee bend
angle, in favor of the pedestrian lower legform impact safety performance.

Key words: automotive safety, pedestrian protection, lower legform impact, foam, plastic, static crushing tests

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