主办:陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊:1976年

汽车实用技术 ›› 2022, Vol. 48 ›› Issue (7): 141-144.DOI: 10.16638/j.cnki.1671-7988.2023.07.028

• 工艺装备 • 上一篇    

汽车薄壁吸能结构的轻量化分析

吉思名,李兆凯   

  1. 长安大学 汽车学院,陕西 西安 710064
  • 出版日期:2023-04-15 发布日期:2023-04-15
  • 通讯作者: 李兆凯
  • 作者简介:吉思名(1996—),男,硕士研究生,研究方向为汽车轻量化,E-mail:jisiming0424@163.com。 通信作者:李兆凯(1986—),男,副教授,研究方向为轻量化及智能车辆,E-mail:lzk_1860@163.com。

Analysis on Lightweight of Automobile Thin-walled Energy Absorbing Structure

JI Siming, LI Zhaokai   

  1. School of Automobile, Chang'an University, Xi'an 710064, China
  • Online:2023-04-15 Published:2023-04-15
  • Contact: LI Zhaokai

摘要: 文章通过 CATIA 与 Hypermesh 软件进行三维建模与网格划分,通过 ABAQUS 及其子 程序进行有限元分析。对汽车双帽型吸能结构在冲击下的力学性能进行分析进而实现轻量化。 选用铝基碳化硅复合材料作为参照,通过与铝合金、Q235 钢材料进行对比,分析得出,铝基 碳化硅的吸能效果与铝合金相近且与钢差别不大,但重量只有 Q235 钢的 40%,而且铝基碳 化硅在中速撞击下结构的稳定性优于铝合金和 Q235 钢。

关键词: 汽车轻量化;复合材料;有限元分析;吸能结构

Abstract: In this paper, CATIA and Hypermesh are used for 3D modeling and mesh generation, and ABAQUS and its subroutines are used for finite element analysis. The mechanical properties of the double cap energy absorbing structure under impact are analyzed to realize the lightweight. Aluminum silicon carbide composite is selected as a reference, compared with aluminum alloy and Q235 steel. The result shows that the energy absorption effect of aluminum silicon carbide is similar to aluminum alloy and there is little difference between Q235 steel and aluminum silicon carbide, but the weight is only 40% of Q235 steel, and the stability of aluminum based silicon carbide under medium velocity impact is better than aluminum alloy and Q235 steel.

Key words: Automobile lightweight; Composites; Finite element analysis; Energy absorbing structure