铝合金电磁铆接接头疲劳性能研究
Research on Fatigue Properties of Electromagnetic Riveted Joints for Aluminum Alloy Structures
DOI: 10.12677/MS.2019.97082, PDF,    科研立项经费支持
作者: 呼 啸, 李士宁, 马 遥, 梁成松：首都航天机械有限公司，北京；蒋 浩, 崔俊佳*：湖南大学，汽车车身先进设计制造国家重点试验室，湖南 长沙
关键词: 电磁铆接；剪切性能；疲劳寿命；断口形貌；Electromagnetic Riveting； Shear Properties； Fatigue Life； Fracture Morphology
摘要: 本文针对航空航天上常用的2A10铝合金铆钉，ZL114A铸铝板材，研究了电磁铆接接头的剪切和疲劳性能。剪切测试结果表明直径4 mm铝合金铆钉电磁铆接接头的最大剪切载荷大概3.5 kN。失效位置位于铆钉钉杆两板的交界处。疲劳测试结果表明试件失效模式为铆钉钉杆发生断裂，与剪切测试的失效模式相似。失效过程中，疲劳裂纹由钉杆边缘萌生，扩展至钉杆三分之一处即发生脆性断裂。另外，对疲劳数据进行了统计学分析，得到了不同可靠度水平下的疲劳寿命，可为电磁铆接接头的应用提供设计参考。
Abstract: In this paper, the shear and fatigue properties of electromagnetic riveting joints were studied for 2A10 aluminum rivets and ZL114A cast aluminum sheets commonly used in aerospace. The shear test results showed that the maximum shear load of electromagnetic riveted joints with aluminum alloy rivets of 4 mm diameter was about 3.5 kN. The failure position was at the junction of two sheets on rivet rod. The fatigue test results showed that the failure mode of the specimens was the fracture on the rivet rod, which was similar to the shear failure mode. In the failure process, fatigue crack initiated from the edge of rivet rod, and brittle fracture occurred when fatigue crack extended to one third of rivet rod. In addition, the fatigue data were analyzed statistically, and the fatigue life under different reliability levels was obtained. It could provide design reference for the application of electromagnetic riveted joints.
文章引用：呼啸, 李士宁, 马遥, 梁成松, 蒋浩, 崔俊佳. 铝合金电磁铆接接头疲劳性能研究[J]. 材料科学, 2019, 9(7): 656-664. https://doi.org/10.12677/MS.2019.97082

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