Fatigue failure transition evaluation of load carrying cruciform welded joints by effective notch energy model

doi:10.1016/j.engfailanal.2022.106328

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	Fatigue failure transition evaluation of load carrying cruciform welded joints by effective notch energy model
	Zhou, Guangtao 4; Kuang, Jingzhen 4; Song, Wei 3; Qian, Guian 2; Berto, Filippo 1
刊名	ENGINEERING FAILURE ANALYSIS
	2022-08-01
卷号	138 页码:15
关键词	Load-carrying welded joint Low and high cycle fatigue Material heterogeneity Failure transition Effective notch energy
ISSN号	1350-6307
DOI	10.1016/j.engfailanal.2022.106328
通讯作者	Song, Wei()
英文摘要	This paper investigates fatigue failure transition boundary of Load-carrying Cruciform Weld Joint (LCWJ) with different yield strength mismatch ratios and geometrical sizes of welded joints under cyclic loading conditions using a semi-empirical analytical method, which is based on the obtained fatigue test data and finite element analysis. To examine the fatigue failure mode transition relationship in CLWJs, different mismatch ratios and local geometries (plate thickness, weld size, and penetration ratio) were designed and fabricated to evaluate potential fatigue initiations (weld toe or weld root). The numerical simulations of cyclic responses at weld toe and weld root were conducted by material cyclic plastic properties from fatigue data of standard coupon specimens. A uniform effective notch energy indicator in the previous investigation was utilized to characterize the low and high cycle fatigue life by extending the SED method on the combination of generalized Neuber concept of Fictitious Notch Rounding (FNR). The related analytical formulations for potential failure points were used to predict the fatigue assessment indicator of LCWJ, considering the effects of plasticity and mechanical heterogeneity and geometry configurations. The effective notch energy relationship between the weld toe and weld root in LCWJ was determined by the established analytical solutions, verified by the fatigue data. The strategy is expected to provide some insights into assessing fatigue life for various types of weld joints for different potential failure locations.
资助项目	National Natural Science Foundation of China[52105403] ; Natural Science Foundation of Jiangsu Province[BK20200174] ; Natural Science Foundation of Fujian Province[2021J01299] ; Postdoctoral Science Foundation of China[2021M702753] ; Natural Science Foundation of the Jiangsu Higher Education In-stitutions[20KJB430008] ; Xuzhou Basic Research Program of Science and Technology[KC21037] ; Qinglan project of Jiangsu province
WOS关键词	CRACK INITIATION ; STRENGTH ; BEHAVIORS ; DESIGN ; STEEL
WOS研究方向	Engineering ; Materials Science
语种	英语
WOS记录号	WOS:000798835100003
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of Fujian Province ; Postdoctoral Science Foundation of China ; Natural Science Foundation of the Jiangsu Higher Education In-stitutions ; Xuzhou Basic Research Program of Science and Technology ; Qinglan project of Jiangsu province
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/89570]
专题	力学研究所_非线性力学国家重点实验室
通讯作者	Song, Wei
作者单位	1.Norwegian Univ Sci & Technol NTNU, Dept Mech & Ind Engn, Richard Birkelands Vei 2b, N-7491 Trondheim, Norway 2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China 3.Xuzhou Univ Technol, Sch Mech & Elect Engn, Xuzhou 221018, Peoples R China 4.Huaqiao Univ, Coll Mech Engn & Automation, Xiamen 361021, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Guangtao,Kuang, Jingzhen,Song, Wei,et al. Fatigue failure transition evaluation of load carrying cruciform welded joints by effective notch energy model[J]. ENGINEERING FAILURE ANALYSIS,2022,138:15.
APA	Zhou, Guangtao,Kuang, Jingzhen,Song, Wei,Qian, Guian,&Berto, Filippo.(2022).Fatigue failure transition evaluation of load carrying cruciform welded joints by effective notch energy model.ENGINEERING FAILURE ANALYSIS,138,15.
MLA	Zhou, Guangtao,et al."Fatigue failure transition evaluation of load carrying cruciform welded joints by effective notch energy model".ENGINEERING FAILURE ANALYSIS 138(2022):15.