连接结构对压印及压-粘复合接头力学性能的影响  

Effect of connection structure on mechanical properties of clinched and clinch-bonded hybrid joints

作　　者：邢保英[1] 宋娇娇 赵腾飞 何晓聪[1] 王世鹏 XING Bao-ying;SONG Jiao-jiao;ZHAO Teng-fei;HE Xiao-cong;WANG Shi-peng(Faculty of Mechanical and Electrical Engineering,Kunming University of Science and Technology,Kunming 650500,China)

机构地区：[1]昆明理工大学机电工程学院,云南昆明650500

出　　处：《塑性工程学报》2022年第12期77-82,共6页Journal of Plasticity Engineering

基　　金：国家自然科学基金资助项目(52065034);云南省应用基础研究计划青年项目(14051848)。

摘　　要：以5182铝合金为研究对象,选用不同板材作为搭接片,制备了对搭压印接头和对搭压印-粘接复合接头(压-粘复合接头)并进行了力学性能的对比。通过静力学和疲劳试验,获得了接头的静强度和疲劳性能,并采用三参数法拟合疲劳寿命曲线。结果表明,同质接头的搭接形式以及搭接片位置对接头静强度和失效形式无显著影响,但粘接剂的使用导致接头的静强度得到了明显提升,并且搭接片在上方更有利于提高压-粘复合接头的静强度。使接头静强度达到了5182铝合金本身的83%。压-粘复合接头的疲劳性能良好,使压印连接技术的应用范围得到了扩展。当疲劳载荷水平较小时,压-粘复合接头受到的疲劳载荷主要集中在搭接片上,因此应选用强度较高的板材作为搭接片。5182 aluminum alloy was taken as the research object,and different sheet materials were selected as straps.The single-strap clinched joints and the single-strap clinch-bonded hybrid joints(clinch-bonded hybrid joints)were prepared to compare their mechanical properties.The static strength and fatigne performance of joints were measured by static tensile tests and fatigne tests.The fatigue life curves were fitted by three parameter method.The results show that the lap form of homogeneous joints and the position of straps have no significant influence on the static strength and failure mode of the joints.But the static strength of the joints can be greatly improved by using adhesive,and the strap above is more conducive to improve the static strength of clinch-bonded hybrid joints,and the static strength of the joint reaches 83%of 5182 aluminum alloy itself.The fatigue performance of clinch-bonded hybrid joints is well,which expands the application range of clinching technology.When the fatigue load level is small,the fatigue load of the clinch-bonded hybrid joints is mainly concentrated on the strap,so the sheet material with higher strength should be selected as the strap.

关 键 词：5182铝合金 对搭接结构 压-粘复合接头 疲劳性能 搭接片 

分 类 号：TH131.1[机械工程—机械制造及自动化]