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汽车安全与节能学报

汽车安全与节能学报 ›› 2013, Vol. 4 ›› Issue (4): 356-360.DOI: 10.3969/j.issn.1674-8484.2013.04.008

• 汽车安全 • 上一篇    下一篇

某铝合金前保险杠系统的结构设计与性能仿真

朱传敏，王 灿，陈 珂   

  1. 1. 同济大学 机械与能源工程学院，上海 201804，中国；
    2. 上海赛科利汽车模具技术应用有限公司，上海 201209，中国
  • 收稿日期:2013-09-29 出版日期:2013-12-25 发布日期:2014-01-15
  • 作者简介:朱传敏（1969—），男（汉），山东，副教授。E-mail ：netmanu@tongji.edu.cn

Structural design and performance simulation of an aluminum#br# alloy front bumper system

ZHU Chuanmin, WANG Can, CHEN Ke   

  1. 1. School of Mechanical Engineering, Tongji University, Shanghai 201804, China;
    2. Shanghai Superior Die Technology Co. Ltd, Shanghai 201209, China
  • Received:2013-09-29 Online:2013-12-25 Published:2014-01-15

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摘要：

设计了一种考虑了耐撞性和轻量化的铝合金前保险杠系统结构，并进行了有限元仿真。对某
研发中的轿车的铝合金前保险杠系统，进行了改进：增设了保持架和铁托两个新零件，加强了吸能盒
后端。基于显式有限元方法，借助HYPERWORKS 和LS-DYNA 软件，设定整车质量1.55 t，初始速度
32.4 km/h，在全正面碰撞刚性墙壁的工况下，进行了仿真。结果表明：该优化后的结构设计，在碰
撞过程中吸能盒截面反力平稳，峰值稳定在130 kN，整个系统在25 ms 时刻完成总吸能31.70 kJ ；
该前保险杠总成质量4.08 kg，比高强度钢材料的总成降低了30%。因此，该系统达到了耐撞性和轻
量化要求。

关键词: 汽车安全性, 前保险杠系统, 耐撞性, 轻量化, 结构设计, 铝合金, 有限元

Abstract:

A structural design of an aluminum-alloy front-bumper system was proposed with considering good
crashworthiness and light-mass, and its crash performances were numerically simulated. A retainer and a
holder were added to the aluminum-alloy front-bumper system of a certain developing car to strengthen crashbox
rear-end. A full-frontal rigid-battier impact collision was simulated based on an explicit finite element method
by using HyperWorks and LS-DYNA soft wares with a vehicle mass of 1.55 t and an initial speed of 32.4 km/h.
The result shows that the improved structure provides a stable reactive force with a stable peak of 130 kN and
absorbs a total energy of 31.70 kJ in 25 ms. Its total mass is only 4.08 kg being the 2/3 of the one made from
high-strength-steel. Therefore, the system structure meets the demands of good crashworthiness and lightmass.

Key words: vehicle safety, front bumper system, crashworthiness, light-mass, structural design, aluminum
alloy, finite element

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