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三明治结构压印-黏接复合接头的力学性能及失效分析 被引量:1

Mechanical properties and fracture mechanism of sandwich structure clinch-bonded hybrid joints with foam metal as interlayer
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摘要 为研究泡沫金属作为压印-黏接复合接头夹层的可行性以及接头的力学性能,选取AA5052铝合金板和泡沫镍、泡沫铜以及泡沫铁镍进行压印-黏接复合连接,利用电液伺服材料试验机对接头进行拉伸剪切试验,利用扫描电镜对失效断口进行观察,分析接头的失效形式、失效载荷、能量吸收值及其失效机理。结果表明:泡沫金属夹层可以使压印-黏接接头静力学性能更加稳定,并且三明治结构压印-黏接复合接头的承载能力与泡沫金属的面密度呈负相关关系,失效位移与泡沫金属的面密度呈正相关关系,泡沫镍夹层三明治结构压印-黏接复合接头的能量吸收能力更加优异。 In order to study the feasibility and mechanical properties of foam metal as the interlayer of clinch-bonded hybridjoint, the 5052 sheet and foam nickel, foam copper, foam iron-nickel were used for clinch-bonded hybrid joints, and thentensile shear tests were carried out by the electric servo-hydraulic material testing machine, and the fracture surface wasobserved by scanning electron microscope. The failure mode, bearing capacity, failure displacement and energy absorptionvalues and the failure mechanism were studied. The results show that the foam metal can make the mechanical properties ofclinch-bonded joints more stable, and the bearing capacity of the foam metal interlayer clinch-bonded hybrid joints is inverselyproportional to the density of the foam metal, while the failure displacement of which is in direct proportion to the density of thefoam metal. The energy absorption values of the sandwich structure clinched joint with nickel foam are optimal.
作者 张杰 何晓聪 雷蕾 初明明 ZHANG Jie, HE Xiaocong, LEI Lei, CHU Mingming (Faculty of Mechanical and Electrical Engineering, Kunming University of Science and Technology, Kunming 650500, China)
出处 《兵器材料科学与工程》 CSCD 北大核心 2018年第2期89-93,共5页 Ordnance Material Science and Engineering
基金 国家自然科学基金(51565023 51565022) 云南省教育厅科学研究基金重大专项项目(ZD201504)
关键词 压印-黏接复合接头 三明治结构 泡沫金属 拉伸剪切试验 断口分析 clinch-bonded hybrid joint sandwich structure metal foam tensile-shear test fracture analysis
作者简介 张杰,男,硕士研究生;主要研究方向为薄板材料连接新技术。E—mail:abel_zhangjie@163.com。;何晓聪,男,博士,博导,教授;从事薄板材料连接新技术研究。E—mail:xiaocong_he@126.com。
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