中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊

Journal of Chongqing Jiaotong University(Natural Science) ›› 2020, Vol. 39 ›› Issue (06): 130-135.DOI: 10.3969/j.issn.1674-0696.2020.06.20

• Vehicle &Electromechanical Engineering • Previous Articles     Next Articles

Dynamic Response and Failure Mode Transformation of Aluminum Alloy Tube under Repeated Impacts

LIU Qiang, XIA Zhencong, SUN Yubo   

  1. (School of Intelligent Engineering, Sun Yat-Sen University, Guangzhou 510006, Guangdong, China)
  • Received:2018-10-08 Revised:2019-04-24 Online:2020-06-26 Published:2020-06-29

铝合金管多次冲击下的动态响应和破坏模式转化研究

刘强,夏振聪,孙宇波   

  1. (中山大学 智能工程学院,广东 广州 510006)
  • 作者简介:刘强(1981—),男,江西赣州人,教授,博士,博士生导师,主要从事汽车轻量化方面的研究。E-mail:liu5168198110@126.com。 通信作者:夏振聪(1994—),男,广东肇庆人,硕士研究生,主要从事汽车轻量化方面的研究。E-mail:840260711@qq.com。
  • 基金资助:
    国家自然科学基金项目(51675540);广东省特支计划人才项目(2015TQ01X371)

Abstract: In the accident of vehicle pileup, the body structure is easy to be impacted many times, which has a great impact on the safety of automobile. Taking the aluminum alloy circular tube as the research object, through the combination of experiment and simulation, the dynamic response of aluminum alloy circular tube under repeated impacts and the influence rule of characteristic parameters on the transformation of failure mode were studied. The research results show that the energy absorption characteristics of aluminum alloy circular tube under repeated impacts such as load displacement curve, specific energy absorption and average load are closely related to the wrinkle formation process of the circular tube. In addition, ABAQUS software was used to simulate the failure process of aluminum alloy circular tube, and the influence rule of diameter thickness ratio and height diameter ratio of aluminum alloy circular tube on the transformation of failure modes under repeated impacts was studied and summarized.

Key words: vehicle engineering, aluminum alloy circular tube, repeated impacts, energy absorption characteristics, failure mode

摘要: 汽车连环碰撞事故中,车身结构易受到多次冲击,对汽车的安全性造成巨大影响。以铝合金圆管为研究对象,通过实验与仿真相结合的方法,研究了铝合金圆管的多次冲击响应及特征参数对破坏模式转化的影响规律。研究发现:铝合金圆管多次冲击下的载荷-位移曲线、比吸能、平均载荷等吸能特性与圆管褶皱形成过程密切相关。此外,采用ABAQUS软件对铝合金圆管破坏过程进行了仿真,研究总结了铝合金圆管直径厚度比、高度直径比对多次冲击破坏模式转化的影响规律。

关键词: 车辆工程, 铝合金圆管, 多次冲击, 吸能特性, 破坏模式

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