Multiaxial fatigue life prediction by equivalent energy-based critical plane damage parameter under variable amplitude loading

doi:10.1111/ffe.13837

IMECH-IR > 非线性力学国家重点实验室

	Multiaxial fatigue life prediction by equivalent energy-based critical plane damage parameter under variable amplitude loading
	Tao ZQ(陶志强); Qian GA(钱桂安); Sun JY(孙经雨); Zhang ZL ; Hong YS(洪友士)
发表期刊	FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
	2022-09-14
ISSN	8756-758X
摘要	A new path-independent multiaxial fatigue damage parameter sigma n$$ {\sigma}_n<^>{\ast } $$, which is defined as the largest normal stress range between adjacent turning points of the maximum shear stress on the critical plane, is proposed to describe multiaxial fatigue damage. By combining the maximum normal stress sigma n,max$$ {\sigma}_{n,\max } $$ or the largest normal stress range sigma n$$ {\sigma}_n<^>{\ast } $$ with the maximum shear stress range on the critical plane, two axial equivalent stress modification factors, keq sigma$$ {k}_{\mathrm{eq}}<^>{\sigma } $$ and keq sigma*$$ {k}_{\mathrm{eq}}<^>{\sigma \ast } $$, are proposed, which can account for the influence of non-proportional additional hardening. The sensitivity of the proposed axial equivalent stress modification factors to multiaxial variable amplitude loading sequences is analyzed. Furthermore, two new multiaxial fatigue damage models based on the axial equivalent stress modification factors are proposed to estimate fatigue life. The applicability of the presented methodology was verified by the experimental data of En15R steel and 7050-T7451 aluminum alloy, and the results showed that the predicted fatigue lifetimes agree well with the experimental data under variable amplitude multiaxial loading.
关键词	critical plane damage parameter life prediction multiaxial fatigue variable amplitude loading
学科领域	Engineering, Mechanical ; Materials Science, Multidisciplinary
DOI	10.1111/ffe.13837
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000853704400001
项目资助者	Academic Research Projects of Beijing Union University [ZK80202101] ; National Natural Science Foundation of China [12002186, 11932020, 11872364, 51905334] ; Shanghai Sailing Program [19YF1418600]
论文分区	二类
力学所作者排名	1
RpAuthor	Hong, YS (corresponding author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China.
引用统计
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/90163
专题	非线性力学国家重点实验室
作者单位	1.Beijing Union Univ, Coll Robot, Beijing, Peoples R China 2.[Tao, Zhi-Qiang 3.Qian, Guian 4.Sun, Jingyu 5.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China 6.Univ Chinese Acad Sci, Sch Engn Sci, Beijing, Peoples R China 7.Shanghai Maritime Univ, Logist Engn Coll, Shanghai, Peoples R China
推荐引用方式 GB/T 7714	Tao ZQ,Qian GA,Sun JY,et al. Multiaxial fatigue life prediction by equivalent energy-based critical plane damage parameter under variable amplitude loading[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2022.
APA	陶志强,钱桂安,孙经雨,Zhang ZL,&洪友士.(2022).Multiaxial fatigue life prediction by equivalent energy-based critical plane damage parameter under variable amplitude loading.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES.
MLA	陶志强,et al."Multiaxial fatigue life prediction by equivalent energy-based critical plane damage parameter under variable amplitude loading".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2022).

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