吉林大学学报(工学版) ›› 2015, Vol. 45 ›› Issue (3): 726-732.doi: 10.13229/j.cnki.jdxbgxb201503007

• • 上一篇    下一篇

铝镁合金单搭接胶接接头应力分布及强度预测

兰凤崇1, 2, 李忠超1, 2, 周云郊1, 2, 陈吉清1, 2   

  1. 1.华南理工大学 机械与汽车工程学院,广州 510640;
    2.广东省汽车工程重点实验室,广州 510640
  • 收稿日期:2013-12-25 出版日期:2015-05-01 发布日期:2015-05-01
  • 通讯作者: 周云郊(1982-),男,讲师.研究方向:车身结构轻量化与碰撞安全性优化.E-mail:mezhouyj@scut.edu.cn E-mail:fclan@scut.edu.cn
  • 作者简介:兰凤崇(1959-),男,教授,博士生导师.研究方向:汽车车身设计理论和方法.
  • 基金资助:
    高等学校博士学科点专项科研基金项目(20120172120002)广东省科技计划项目(2013B010402006,2013B090600023)

Stress distribution and strength prediction of aluminum-magnesium alloy adhesive-bonded single-lap joints

LAN Feng-chong1, 2, LI Zhong-chao1, 2, ZHOU Yun-jiao1, 2, CHEN Ji-qing1, 2   

  1. 1.School of Mechanical&Automotive Engineering, South China University of Technology, Guangzhou 510640,China;
    2.Guang Dong Provincial Key Laboratory of Automotive Engineering, Guangzhou 510640,China
  • Received:2013-12-25 Online:2015-05-01 Published:2015-05-01

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摘要： 针对铝镁合金单搭接胶接接头,建立了剪滞解析模型,得到接头剪切应力的一般分析方法,利用有限元模型验证了该方法的有效性。在三维弹塑性有限元模型的基础上,分析了铝镁合金单搭接胶接接头剪切应力、Von-Mises等效应力在胶层厚度、宽度方向上的分布规律,结合试验探讨了胶粘剂类型、胶层厚度、胶接搭接长度对胶接结构连接强度的影响。所得结果对胶接工艺金属材料与胶层属性匹配、接头强度预测及胶接接头性能优化具有指导意义。

关键词: 车辆工程, 铝合金, 镁合金, 胶接, 单搭接接头, 剪滞模型, 应力分布, 强度预测

Abstract: A shear-lag analytical model for aluminum-magnesium alloy single-lap joints was established to predict the joint shear stress. The predicted distribution of shear stress was verified using finite element model. Based on the three dimensional elastic-plastic finite element model, the distributions of shear stress and Von-Mises equivalent stress of the alloy joints in the adhesive layer thickness- and width-direction are analyzed. The effects of various parameters, such as adhesive type, layer thickness and adhesive length, on the bonded structure strength are discussed with experiment and simulation. The results of this study may provide guidance for matching different kinds of metals and adhesives and are helpful in strength prediction and performance optimization of adhesive joints.

Key words: vehicle engineering, aluminum alloy, magnesium alloy, adhesive bonding, single-lap joints, shear-lag analytical model, stress distribution, strength prediction

中图分类号: 

  • U462
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