Experimental and numerical investigations on fatigue behavior of aluminum alloy 7050-T7451 single lap four-bolted joints | |
Liu, Xiaomei2; Cui, Hao2; Zhang, Shangzhou2; Liu, Haipo2; Liu, Gaofeng3; Li, Shujun1 | |
刊名 | JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY |
2018-07-01 | |
卷号 | 34期号:7页码:1205-1213 |
关键词 | 7050 aluminum alloy Bolted joint Fatigue behavior Finite element analysis Residual stress |
ISSN号 | 1005-0302 |
DOI | 10.1016/j.jmst.2017.09.020 |
通讯作者 | Zhang, Shangzhou(szzhangyt@163.com) |
英文摘要 | The fatigue behavior of aluminum alloy 7050-T7451 single lap four-bolted joints was studied by high-frequency fatigue test and finite element (FE) methods. The fatigue test results showed that a better enhancement of fatigue life was achieved for the joints with high-locked bolts by employing the combinations of cold expansion, interference fit, and clamping force. The fractography revealed that fatigue cracks propagated tortuously; more fatigue micro-cliffs, tearing ridges, lamellar structure were observed, and fatigue striation spacing was simultaneously reduced. The evaluation of residual stress conducted by FE methods confirmed the experimental results and locations of fatigue crack initiation. The extension of fatigue lives can be attributed to the evolution of fatigue damage and effect of beneficial compressive residual stresses around the hole, resulting in the delay of crack initiation, crack deflection, and plasticity-induced crack closure. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology. |
资助项目 | Key Research and Development Plan of Shandong Province, China[2017GGX20140] ; Natural Science Foundation of Shandong Province, China[ZR2014JL031] |
WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
语种 | 英语 |
出版者 | JOURNAL MATER SCI TECHNOL |
WOS记录号 | WOS:000434132800018 |
资助机构 | Key Research and Development Plan of Shandong Province, China ; Natural Science Foundation of Shandong Province, China |
内容类型 | 期刊论文 |
源URL | [http://ir.imr.ac.cn/handle/321006/128403] |
专题 | 金属研究所_中国科学院金属研究所 |
通讯作者 | Zhang, Shangzhou |
作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, Peoples R China 2.Yantai Univ, Sch Environm & Mat Engn, Yantai 264005, Peoples R China 3.Oriental Bluesky Titanium Technol Co LTD, Yantai 264005, Peoples R China |
推荐引用方式 GB/T 7714 | Liu, Xiaomei,Cui, Hao,Zhang, Shangzhou,et al. Experimental and numerical investigations on fatigue behavior of aluminum alloy 7050-T7451 single lap four-bolted joints[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(7):1205-1213. |
APA | Liu, Xiaomei,Cui, Hao,Zhang, Shangzhou,Liu, Haipo,Liu, Gaofeng,&Li, Shujun.(2018).Experimental and numerical investigations on fatigue behavior of aluminum alloy 7050-T7451 single lap four-bolted joints.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(7),1205-1213. |
MLA | Liu, Xiaomei,et al."Experimental and numerical investigations on fatigue behavior of aluminum alloy 7050-T7451 single lap four-bolted joints".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.7(2018):1205-1213. |
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