1420铝锂合金同种异种自冲铆单搭接头力学性能

发布时间：2018-05-29 07:33

本文选题：自冲铆 + 工艺参数　；参考：《宇航材料工艺》2016年01期

【摘要】：为探究1420铝锂合金自冲铆接头的力学性能,本文采用自冲铆连接设备对1420铝锂合金(AL1420)同种及其与铜合金(H62)异种板材组合进行铆接,并通过拉伸-剪切试验测试接头的力学性能,运用SPSS数据分析软件对接头的最大载荷和最大位移量进行分析。结果表明:AL1420-AL1420和AL1420-H62两种接头的失效形式皆为铆钉从下板拉脱,铆钉头与上板接触区域出现不同程度撕裂;H62-AL1420接头除铆钉从下板拉脱,铆钉头与下板接触区域仅出现凹陷。AL1420-AL1420接头最大载荷最高(6 026.8 N),能量吸收性能最好(16.84 J)。对于异种板材组合,H62-AL1420接头的最大载荷(5 304.0 N)大于AL1420-H62接头(5 229.3 N),AL1420-H62接头的能量吸收值(16.79 J)大于H62-AL1420接头(15.08 J),异种板材铆接时则优先采用能量吸收性能较好的AL1420-H62搭接形式。
[Abstract]:In order to investigate the mechanical properties of 1420 Al-Li alloy self-impact riveting head, this paper uses self-punching riveting equipment to riveting 1420 Al-Li alloy AL1420 and its combination with copper alloy H62dissimilar sheet. The mechanical properties of the joint are tested by tensile shear test. The maximum load and displacement of the joint are analyzed by SPSS data analysis software. The results show that the failure modes of the two joints are rivets pulling off from the lower plate, and the rivet head tearing at the contact area between the head and the upper plate. The H62-AL1420 joint except the rivet is pulled off from the lower plate. In the contact area between the rivet head and the lower plate, the maximum load of the joint is up to 6 026.8 Nu, and the energy absorption property is best at 16.84 J ~ (-1). The maximum load of H62-AL1420 joint is greater than that of AL1420-H62 joint (5229.3 N / L) and the energy absorption value of AL1420-H62 joint is 16.79J), which is higher than that of H62-AL1420 joint (15.08 J), and the better energy absorption AL1420-H62 is preferred when the dissimilar plate is riveted.
【作者单位】：昆明理工大学机电工程学院;
【基金】：国家自然科学基金(50965009) 昆明理工大学分析测试基金项目(20150507)
【分类号】：TH131.1

【参考文献】