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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): 276-281.DOI: 10.3969/j.issn.1674-8484.2014.03.009

• 汽车安全 • 上一篇    下一篇

偏置可变形壁障及其有限元模型的开发与验证

白中浩，郭厚锐，白芳华，曹立波   

  1. 湖南大学 汽车车身先进设计制造国家重点实验室，长沙 410082，中国
  • 收稿日期:2014-03-04 出版日期:2014-09-25 发布日期:2014-10-08
  • 作者简介:第一作者 / First author ： 白中浩（1978 －），男( 汉)，河南，副教授。 E-mail: baizhonghao@hnu.edu.cn 第二作者/ Second author ： 郭厚锐(1990 － )，男( 汉)，安徽，硕士研究生。E-mail: guohourui@163.com
  • 基金资助:

    国家自然科学基金资助项目(51105137) ；国家”八六三”高新技术研究发展项目(2012AA111802)

Development and validation of an offset deformable barrier and its FE model

BAI Zhonghao, GUO Hourui, BAI Fanghua, CAO Libo   

  1. State Key Laboratory of Advanced Design and Manufacturing for Vehicle Body, Hunan University, Changsha
    410082, China
  • Received:2014-03-04 Online:2014-09-25 Published:2014-10-08

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摘要： 开发了一种供汽车碰撞试验用的偏置可变形壁障(ODB)，该壁障由蜂窝铝块制造，且满足中
国的《乘用车正面偏置碰撞的乘员保护要求GB/T 20913-2007》法规。建立了基于壳单元的该壁障有限
元模型。推导了异面压缩强度公式，用以指导试验。用准静态压缩试验，获得蜂窝铝物性参数。进
行了台车高位水平杆及低位水平杆的壁障碰撞试验。在壁障的有限元模型中，添加了材料失效，使用
弹簧单元，实现蜂窝铝内滞留空气压强效应的模拟。以壁障碰撞试验，验证该模型。结果表明：该
模型可模拟面板及蜂窝铝的撕裂效果；仿真的力与变形的曲线波形及峰值与试验结果具有一致性。

关键词: 汽车安全, 碰撞试验, 偏置可变形壁障(ODB) , 壳单元有限元模型, 蜂窝铝

Abstract: An offset deformable barrier (ODB) manufactured by honeycomb blocks was developed, which
meets the requirements of “the protection of the occupants in the event of an offset frontal collision for
passenger car GB/T 20913-2007” in China. A finite element model (FEM) of the developed barrier was built. A
formula of out-of-plane compression strength was derived to guide the tests. Based on quasi-static compression
tests, honeycomb parameters that fulfill the regular requirements were obtained. High-horizontal bar and lowhorizontal
bar sled impact tests of manufactured offset deformable barrier were carried out. Material erosion
was added to the barrier FEM, and spring element was applied to simulate the effect of honeycomb entrapped
air pressure under dynamic impact. The barrier impact test results were used to validate the model. The results
show that the model can simulate the tear effect of aluminum panel and honeycomb core, and the waveform and
peak force of the force-displacement curve are in agreement with test results.

Key words: vehicle safety, impact test, offset deformable barrier (ODB), shell element finite element model
(FEM), aluminum honeycomb

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