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泡沫镍夹层结构自冲铆接头的成形特征及失效机理分析

丁文有 何晓聪 刘佳沐 曾凯

丁文有, 何晓聪, 刘佳沐, 曾凯. 泡沫镍夹层结构自冲铆接头的成形特征及失效机理分析[J]. 机械科学与技术, 2018, 37(4): 581-585. doi: 10.13433/j.cnki.1003-8728.2018.0414
引用本文: 丁文有, 何晓聪, 刘佳沐, 曾凯. 泡沫镍夹层结构自冲铆接头的成形特征及失效机理分析[J]. 机械科学与技术, 2018, 37(4): 581-585. doi: 10.13433/j.cnki.1003-8728.2018.0414
Ding Wenyou, He Xiaocong, Liu Jiamu, Zeng Kai. Forming Characteristics and Failure Mechanism Analysis of Sandwich Structure Self-piercing Riveted Joint with Nickel Foam[J]. Mechanical Science and Technology for Aerospace Engineering, 2018, 37(4): 581-585. doi: 10.13433/j.cnki.1003-8728.2018.0414
Citation: Ding Wenyou, He Xiaocong, Liu Jiamu, Zeng Kai. Forming Characteristics and Failure Mechanism Analysis of Sandwich Structure Self-piercing Riveted Joint with Nickel Foam[J]. Mechanical Science and Technology for Aerospace Engineering, 2018, 37(4): 581-585. doi: 10.13433/j.cnki.1003-8728.2018.0414

泡沫镍夹层结构自冲铆接头的成形特征及失效机理分析

doi: 10.13433/j.cnki.1003-8728.2018.0414
基金项目: 

国家自然科学基金项目(51565023,51565022)资助

详细信息
    作者简介:

    丁文有(1993-),硕士研究生,研究方向为薄板材料连接新技术,daland121834@163.com

    通讯作者:

    何晓聪,教授,博士生导师.xiaocong_he@126.com

Forming Characteristics and Failure Mechanism Analysis of Sandwich Structure Self-piercing Riveted Joint with Nickel Foam

  • 摘要: 为揭示泡沫镍夹层结构自冲铆接头的成形特征及失效机理,本文制备了以AA5052铝合金为基板,泡沫镍为夹层的自冲铆接头;采用理论分析与微观组织观察相结合的方法对夹层结构接头成形特征进行系统研究,通过拉伸-剪切试验研究接头的静失效载荷及失效位移,探究了接头的失效机理。结果表明:泡沫镍夹层可增大接头的钉脚张开度,并改善应力分布;铆接过程中泡沫镍能在铆接界面间形成牢固的自润滑物理吸附膜,可提高接头的耐腐蚀性;1mm泡沫镍夹层使接头静失效载荷增加了8.9%;随着泡沫镍夹层厚度的增加,接头的抗拉强度呈降低趋势;泡沫镍夹层结构自冲铆接头的失效模式为铆钉脱离下板,上板主要承受拉伸载荷,下板承受压缩载荷。
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出版历程
  • 收稿日期:  2017-09-28
  • 刊出日期:  2018-04-05

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