Cyclic plastic zone-based notch analysis and damage evolution model for fatigue life prediction of metals

doi:10.1016/j.matdes.2020.108639

IMECH-IR > 非线性力学国家重点实验室

	Cyclic plastic zone-based notch analysis and damage evolution model for fatigue life prediction of metals
	Taddesse AT 1; Zhu SP(朱顺鹏)1,2; Liao D 1; Keshtegar B 1,3
通讯作者	Zhu, Shun-Peng(zspeng2007@uestc.edu.cn)
发表期刊	MATERIALS & DESIGN
	2020-06-01
卷号	191 页码:10
ISSN	0264-1275
摘要	Fatigue strength analysis of critical components plays a vital role for ensuring structural integrity and operational reliability of major equipment. In notched components, the concept of cyclic plastic zone (CPZ) is commonly utilized for fatigue cracking analysis, in which the CPZ size normally relates to the material strength. In particular, materials with higher yield stress have shown smaller CPZ size and vice versa. According to this, a new approach for determining closed-form stress at the notch tip is proposed by considering the size of cyclic plastic zone, which can be used for the notch tip stress evaluation along the load direction under cyclic loadings. By implementing FE analysis, experimental data of 304 stainless steel, 40Cr steel and Ti-6Al-4V alloy are utilized for model validation and comparison. Results show that the scope of damaged CPZ alters the notch tip stress under fatigue loadings, and the proposed model yields better correlation of fatigue life predictions with experimental results of the three materials than other two models. (C) 2020 The Authors. Published by Elsevier Ltd.
关键词	Notch Fatigue Cyclic plastic zone Damage mechanics Life prediction
DOI	10.1016/j.matdes.2020.108639
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000536937200055
关键词[WOS]	CRACK GROWTH-RATES ; CRITICAL PLANE ; PROPAGATION ; INITIATION ; COMPONENTS ; MECHANICS ; SIZE ; DISCS ; STEEL
WOS研究方向	Materials Science
WOS类目	Materials Science, Multidisciplinary
资助项目	National Natural Science Foundation of China[11972110] ; National Natural Science Foundation of China[11672070] ; Sichuan Provincial Key Research and Development Program[2019YFG0348] ; Fundamental Research Funds for the Central Universities[ZYGX2019J040] ; Science and Technology Program of Guangzhou, China[201904010463] ; Opening Fund of State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, China
项目资助者	National Natural Science Foundation of China ; Sichuan Provincial Key Research and Development Program ; Fundamental Research Funds for the Central Universities ; Science and Technology Program of Guangzhou, China ; Opening Fund of State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, China
论文分区	二类/Q1
力学所作者排名	1
RpAuthor	Zhu, Shun-Peng
引用统计	被引频次：36[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/82129
专题	非线性力学国家重点实验室
作者单位	1.Univ Elect Sci & Technol China, Sch Mech & Elect Engn, Chengdu 611731, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China; 3.Univ Zabol, Dept Civil Engn, Zabol, Iran
推荐引用方式 GB/T 7714	Taddesse AT,Zhu SP,Liao D,et al. Cyclic plastic zone-based notch analysis and damage evolution model for fatigue life prediction of metals[J]. MATERIALS & DESIGN,2020,191:10.
APA	Taddesse AT,朱顺鹏,Liao D,&Keshtegar B.(2020).Cyclic plastic zone-based notch analysis and damage evolution model for fatigue life prediction of metals.MATERIALS & DESIGN,191,10.
MLA	Taddesse AT,et al."Cyclic plastic zone-based notch analysis and damage evolution model for fatigue life prediction of metals".MATERIALS & DESIGN 191(2020):10.

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