8090铝锂合金T型自冲铆接头剥离试验失效机理分析  

Analysis on Failure Mechanism of Peeling Test of T-Jointed of Self-Pierce Riveting About 8090 Aluminum-Lithium Alloys

作　　者：程强[1] 何晓聪[1] 张先炼[1] 高爱凤 卢毅[1] 

机构地区：[1]昆明理工大学机电工程学院,昆明650500

出　　处：《宇航材料工艺》2016年第2期80-83,共4页Aerospace Materials & Technology

基　　金：国家自然科学基金资助项目(50965009);昆明理工大学分析测试基金项目(20150570)

摘　　要：为探究8090铝锂合金自冲铆(SPR)T型接头的剥离性能及失效机理,本文对8090铝锂合金(8090)同种及其与钛合金(TA1)、铜合金(H62)异种组合的三组自冲铆T型接头进行剥离试验,并通过MATLAB R2014b对所得试验数据进行分析。结果表明:当下板材料相同时,接头铆钉刺入下板的深度对接头机械内锁的强度影响较大。剥离时的最大载荷均值从小到大依次为:8090-8090T型接头(1070.3 N),TA1-8090T型接头(1414.2 N)和H62-8090T型接头(1642.7 N)。8090同种T型接头的能量吸收能力均大于其余两组异种组接头。In order to study the anti-peeling properties and failure mechanism of T-jointed joints of 8090 aluminum-lithium alloys of self-pierce riveting（ SPR）,peeling test were used to test three sets of T-jointed joints combined with 8090 aluminum-lithium alloys（ 8090） with itself and copper alloys（ H62）. Experimental data was analyzed through MATLAB R2014 b. The results show that the depth of rivets pierce has a big effect on the strength of joint interlock. The mean value of maximum loads of H62-8090 T-jointed joint（ 1 642. 7 N） is higher than TA1-8090 T-jointed joint（ 1 414. 2 N）. 8090-8090 T-jointed joint（ 1 070. 3 N） is the lowest among these joints. The energy absorption value of joint of 8090 with itself is greatest than the two other joints.

关 键 词：8090铝锂合金 T型接头 剥离试验 机械内锁 能量吸收 

分 类 号：TH131.1[机械工程—机械制造及自动化]