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汽车安全与节能学报

汽车安全与节能学报 ›› 2012, Vol. 3 ›› Issue (4): 326-331.DOI: 10.3969/j.issn.1674-8484.2012.04.005

• 汽车安全 • 上一篇    下一篇

汽车碰撞中锥形晶胞薄壁金属管吸能特性的仿真研究

邹 猛1, 2，魏灿刚1，许述财2，赵振家1，张金换2   

  1. 1. 吉林大学 工程仿生教育部重点实验室，长春 130022 ；
    2. 清华大学 汽车安全与节能国家重点实验室，北京 100084
  • 出版日期:2012-12-25 发布日期:2013-01-05
  • 作者简介:邹猛（1978—），男（汉），副教授。E-mail: zoumeng@jlu.edu.cn
  • 基金资助:

    汽车安全与节能国家重点实验室开放基金（KF11211）；高等学校博士学科点专项科研基金资助项目
    (20110061120050) ；吉林省科技发展计划项目（201101024）；中国博士后科学基金（2012M520676）

Energy absorption characteristic simulation of cone thin-walled metal tube research in the automotive collision

ZOU Meng 1,2, WEI Cangang1, XU Shucai2, ZHAO Zhenjia1, ZHANG Jinhuan2   

  1. 1. Key Laboratory for Bionics Engineering of Education Ministry, Jilin University, Changchun 130022, China;
    2. State Key Lab of Automotive Safety and Energy, Tsinghua University, Beijing 100084, China
  • Online:2012-12-25 Published:2013-01-05

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摘要： 薄壁金属管是汽车碰撞时为安全性所设置的吸能结构件。为优化设计金属薄壁管，该文研
究了不同锥度、晶胞数的LD2 铝合金锥管的吸能特性。用Hypermesh 和Ls-Dyna 软件，在轴向和偏
斜方向动态载荷两种作用下，以初始峰值载荷（IPL）和比吸能（SEA）来表征吸能特性，进行仿真分析。
结果是：对于单、双、四晶胞的锥管，IPL 均随着锥度的增加而降低；锥管的IPL 均低于直管的IPL，
SEA 随着锥度的增加而提高；随着斜碰角度的增大，锥度为0.3 的四晶胞锥管在斜碰的峰值载荷和比
吸能均降低。因此，合理地调整锥度和晶胞数，可以提高薄壁管的吸能特性。

关键词: 汽车碰撞, 汽车结构件, 锥管, 晶胞, 初始峰值载荷(IPL) , 比吸能(SEA)

Abstract: Thin-walled metal tubes are structural parts for vehicle security when automotive collisions occur.
This paper investigates the energy absorption characteristics of an aluminum alloy LD2 metallic thin-walled
tube with different tapers and cell numbers to optimize the design of the tube. Hypermesh and Ls-Dyna soft
wares were used to simulate the dynamic loads in axial and deflective directions with Initial Peak Load (IPL) and
Specific Energy Absorption (SEA) characterizing the energy absorption characteristics. The results show that
the IPLs of the single-, double-, and fourfold-cell conical tubes reduce with increasing taper, with the IPLs of the
taper pipe being lower than those of the straight tube and that the SEA increases with increasing taper. Both
the IPL and the SEA in oblique impact decrease as the collision angle increases for fourfold-cell conical tube
with taper of 0.3. Therefore, a reasonable adjustment of the tube taper and cell number can improve the energy
absorption characteristics of thin-walled tubes.

Key words: automotive collision, automotive structural parts, conical tube, unit cell, initial peak load (IPL),
specific energy absorption (SEA)

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