锻压技术

不同夹层材料层合板与AA5052铝合金自冲铆接接头成形质量与静强度对比

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

作者：黄志超张玉宽姜玉强

单位：华东交通大学载运工具与装备教育部重点实验室

关键词：夹层材料层合板自冲铆接成形质量静强度

分类号：TG938

出版年,卷(期):页码：2022,47(11):87-94

摘要：

为了对比不同夹层材料层合板与AA5052铝合金自冲铆接接头的成形质量与静强度，分别采用M005丙烯酸高强度结构胶、EVA泡棉和泡沫镍作为夹层制备了厚度为1.5 mm的层合板，使用两种板料组合方式进行自冲铆接试验。结果表明：在成形质量方面，层合板作为上板的接头的成形质量优于层合板作为下板的接头的质量，且夹层材料的种类对接头的成形质量产生了影响，EVA泡棉夹层的层合板成形质量最优，泡沫镍夹层的层合板次之，M005丙烯酸高强度结构胶夹层的层合板最差。接头的成形质量影响了接头的静强度，接头成形质量越好，对应接头的静强度越大。在失效形式方面，层合板作为上板时接头的失效形式为铆钉拔出铝合金板；而层合板作为下板时接头的失效形式为铆钉拔出层合板下基板，并伴随有层合板上基板与夹层材料的拉破撕裂。

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.

基金项目：

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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