Transactions of Materials and Heat Treatment

Title：Comparison on forming quality and static strength for self-piercing riveting joints of laminated plates with different sandwich materials and AA5052 aluminum alloy

Authors： Huang Zhichao Zhang Yukuan Jiang Yuqiang

Unit： Key Laboratory of Conveyance and Equipment Ministry of Education East China Jiaotong University

KeyWords： sandwich material laminated plate self-piercing riveting forming quality static strength

ClassificationCode：TG938

year,vol(issue):pagenumber：2022,47(11):87-94

Abstract：

In order to compare forming quality and static strength for self-piercing riveting joints of laminated plates with different sandwich materials and AA5052 aluminum alloy,the laminated plates with the thickness of 1.5 mm were prepared by using M005 acrylic high-strength structural adhesive, EVA foam and nickel foam as interlayers, respectively, and the self-piercing riveting test was carried out by two kinds of plate combination methods. The results show that in the aspect of forming quality, the forming quality of joints when taking the laminated plate as the upper plate is better than that when taking the laminated plate as the lower plate, and the type of sandwich material affects the forming quality of joints. The forming quality of the laminated palte with EVA foam is the best, the laminated plate with nickel foam is the second, and the laminated plate with M005 acrylic high-strength structural adhesive has the worst forming quality. The forming quality of joints affects the static strength of joints. The better the forming quality of joints is, the greater the static strength of corresponding joints is. In terms of failure mode, when the laminated plate is used as the upper plate, the failure mode of joints is that the rivet pulls out the aluminum alloy plate, and when laminated plate is used as the lower plate, the failure mode of joints is that the lower substrate of laminated plate is pulled out by rivets, accompanied by the tensile tear of the upper substrate and the sandwich material of laminated plate.

Funds：

国家自然科学基金资助项目（51875201）

作者简介：黄志超（1971-），男，博士，教授，E-mail：hzcosu@163.com

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