An Numerical Investigation on the Effect of the Combination of Cold Expansion and Interference Fitting on Fatigue Life Improvement of a 7075-T6 Aluminum Alloy Single Plate

被引：0
作者：
Huang, Yongjie [1 ]
Guan, Zhidong [1 ]
Li, Zengshan [1 ]
Liu, Faqi [1 ]
He, Yamei [2 ]
Dan, Hu [2 ]
机构：
[1] Beihang Univ, Sch Aeronaut Sci & Engn, Beijing, Peoples R China
[2] AVIC, Chengdu Aircraft Design & Res Inst Inst, Chengdu, Sichuan, Peoples R China
来源：
2017 8TH INTERNATIONAL CONFERENCE ON MECHANICAL AND AEROSPACE ENGINEERING (ICMAE) | 2017年
关键词：
7075-T6 aluminum alloy; cold expansion; interference fitting; combined enhancement; fatigue life; finite element analysis; FASTENER HOLES; CLAMPING FORCE; LAP JOINTS; CRITERIA; PREDICTION; BEHAVIOR;
D O I：
暂无
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Cold expansion and interference fitting both can improve the fatigue life of 7075-T6 aluminum alloy single plates. To study the combination effect of the two techniques on fatigue life improvement, a numerical analysis method was employed to simulate the specimens with different cold expansion and interference fit degrees. Finite element methods were conducted to capture the residual stress, and the Smith-Watson- Topper (SWT) method was used to predict the fatigue life. The simulation results revealed that, compared with single technique enhanced specimens, the combined enhanced specimens of 4% cold expansion and 2% interference fit increase the fatigue life by 12 -38%.
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收藏
页码：632 / 638
页数：7
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