Fatigue life estimation of self-piercing riveted aluminum joints under mixed-mode loading

被引：14
作者：
Choi, Duk-Ho [1 ]
Han, Dong-Woon [1 ]
Kim, Ho-Kyung [2 ]
机构：
[1] Seoul Natl Univ Sci & Technol, Grad Sch, Dept Automot Engn, Seoul, South Korea
[2] Seoul Natl Univ Sci & Technol, Dept Mech & Automot Engn, Seoul 139743, South Korea
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2017年 / 97卷
关键词：
SPR joints; Fatigue lifetime; Cross-shaped specimen; Mixed-mode; Equivalent stress intensity factor; STRENGTH;
D O I：
10.1016/j.ijfatigue.2016.12.019
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Fatigue tests were conducted using cross-shaped specimens with aluminum alloy (Al-5052) plates. Mixed-mode loading was achieved with different loading angles of 0, 45, and 90 to evaluate the fatigue strength of the self-piercing riveted (SPR) joints under mixed-mode loading. On the basis of a lifetime of 10(6) cycles, the load amplitudes corresponding to the fatigue limit were 37%, 18%, and 19% of the monotonic strength for load angles of 0 degrees, 45 degrees, and 90 degrees, respectively. The equivalent stress intensity factor can appropriately predict the experimental fatigue lifetimes of SPR joints as longer than 10(5) cycles. (C) 2016 Elsevier Ltd. All rights reserved.
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收藏
页码：20 / 28
页数：9
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