Experimental and numerical investigations on fatigue behavior of aluminum alloy 7050-T7451 single lap four-bolted joints

doi:10.1016/j.jmst.2017.09.020

IMR OpenIR

	Experimental and numerical investigations on fatigue behavior of aluminum alloy 7050-T7451 single lap four-bolted joints
	Liu, Xiaomei 1; Cui, Hao 1; Zhang, Shangzhou 1; Liu, Haipo 1; Liu, Gaofeng 2; Li, Shujun 3
通讯作者	Zhang, Shangzhou(szzhangyt@163.com)
	2018-07-01
发表期刊	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
ISSN	1005-0302
卷号	34 期号:7 页码:1205-1213
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.
关键词	7050 aluminum alloy Bolted joint Fatigue behavior Finite element analysis Residual stress
资助者	Key Research and Development Plan of Shandong Province, China ; Natural Science Foundation of Shandong Province, China
DOI	10.1016/j.jmst.2017.09.020
收录类别	SCI
语种	英语
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
WOS类目	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000434132800018
出版者	JOURNAL MATER SCI TECHNOL
引用统计	被引频次：13[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/128402
专题	中国科学院金属研究所
通讯作者	Zhang, Shangzhou
作者单位	1.Yantai Univ, Sch Environm & Mat Engn, Yantai 264005, Peoples R China 2.Oriental Bluesky Titanium Technol Co LTD, Yantai 264005, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Liaoning, 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.