Multiaxial fatigue life prediction method considering notch effect and non-proportional hardening

doi:10.1016/j.engfailanal.2022.106202

IR > 机电工程学院

	Multiaxial fatigue life prediction method considering notch effect and non-proportional hardening
	Ran, Yong 1; Liu, Jianhui1 ; Xie, Linjun 2
	2022-06
发表期刊	Engineering Failure Analysis
ISSN	1350-6307
卷号	136
摘要	Engineering components with geometric discontinuous structures generally appear notch effect, which might eventually induce fatigue failure. In this study, a novel multiaxial fatigue prediction model is established for notched components by incorporating the notch effect and non-proportional hardening. Firstly, according to the notch effect, a computational procure of damage parameters is presented by combining the notion of stress intensity with finite element simulations based on the critical plane method. Secondly, considering the non-proportional hardening effect of path modes and material properties, a new modified non-proportional hardening factor is proposed. Particularly, the relationship between the relative stress gradient and the fatigue life is investigated under different stress concentration factors. Finally, with the help of the Manson-Coffin equation, a multiaxial fatigue life prediction model is developed subjected to multiaxial proportional/non-proportional loadings. Experimental data of medium steel En8 and GH4169 alloys are utilized to evaluate and validate the proposed model as well as four other classical models (FS model, MSWT model, Yu model and CXH model). The result indicates that the proposed model yields a higher accuracy on multiaxial fatigue life than other four models, and the majority of prediction results are within the ±2 life factor. © 2022 Elsevier Ltd
关键词	Fatigue of materials Hardening Stress concentration Welds Fatigue life prediction Field intensity Life predictions Multiaxial fatigue life NON-proportional hardening Notched effect Stress field Stress field intensity approach The critical plane method
DOI	10.1016/j.engfailanal.2022.106202
收录类别	EI ; SCIE
语种	英语
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Characterization & Testing
WOS记录号	WOS:000802126500003
出版者	Elsevier Ltd
EI入藏号	20221011741726
EI主题词	Forecasting
EI分类号	537.1 Heat Treatment Processes ; 538.2 Welding ; 951 Materials Science
来源库	WOS
引用统计	被引频次：6[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/157907
专题	机电工程学院
通讯作者	Liu, Jianhui; Xie, Linjun
作者单位	1.LanZhou Univ Technol, Sch Mech & Elect Engn, Lanzhou, Gansu, Peoples R China; 2.Zhejiang Univ Technol, Coll Mech Engn, Hangzhou, Zhejiang, Peoples R China
第一作者单位	兰州理工大学
通讯作者单位	兰州理工大学
第一作者的第一单位	兰州理工大学
推荐引用方式 GB/T 7714	Ran, Yong,Liu, Jianhui,Xie, Linjun. Multiaxial fatigue life prediction method considering notch effect and non-proportional hardening[J]. Engineering Failure Analysis,2022,136.
APA	Ran, Yong,Liu, Jianhui,&Xie, Linjun.(2022).Multiaxial fatigue life prediction method considering notch effect and non-proportional hardening.Engineering Failure Analysis,136.
MLA	Ran, Yong,et al."Multiaxial fatigue life prediction method considering notch effect and non-proportional hardening".Engineering Failure Analysis 136(2022).