Probability Model of Residual Strength of Materials Under Uncertain Cyclic Load

doi:10.1007/s12204-020-2172-5

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	Probability Model of Residual Strength of Materials Under Uncertain Cyclic Load
	Gao, Jianxiong 2; An, Zongwen 2; Ma, Qiang 2; Zhao, Shendan 1
刊名	Journal of Shanghai Jiaotong University (Science)
	2020-04-01
卷号	25 期号:2 页码:266-272
关键词	Cyclic loads Fatigue of materials Probability density function Probability distributions Degradation rules External factors Fatigue life prediction Fatigue performance Material performance Probability modeling Reliability assessments Residual strength
ISSN号	10071172
DOI	10.1007/s12204-020-2172-5
英文摘要	Residual strength is usually used to characterize the degradation rule of material performance under the cyclic load, which is critical to fatigue life prediction as well as reliability assessment of materials. In order to reveal the probability characteristics of residual strength of material under uncertain cyclic load, the relationship between external stress and fatigue life (i.e., the equation of S-N curve) is considered in this study. Firstly, the probability density function of fatigue life under uncertain cyclic load is derived from the probability density function of external stress. Then, a probability model of residual strength is proposed on the basis of a fundamental assumption that the residual strength and the remaining life of material depend on the same damage state. Finally, the validity of the proposed model is verified by an illustrative example. The results indicate that the probability distribution of residual strength of material is affected by both the external factor (i.e., probability characteristics of the load) and the internal factor (i.e., fatigue performance parameters of material). © 2020, Shanghai Jiao Tong University and Springer-Verlag GmbH Germany, part of Springer Nature.
语种	英语
出版者	Shanghai Jiaotong University
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/115279]
专题	机电工程学院
作者单位	1.Department of Mechanical Engineering, Shizuoka Institute of Science and Technology, Fukuroi, Shizuoka; Fukuroi, Shizuoka, Japan 2.School of Mechanical and Electronical Engineering, Lanzhou University of Technology, Lanzhou; 730050, China;
推荐引用方式 GB/T 7714	Gao, Jianxiong,An, Zongwen,Ma, Qiang,et al. Probability Model of Residual Strength of Materials Under Uncertain Cyclic Load[J]. Journal of Shanghai Jiaotong University (Science),2020,25(2):266-272.
APA	Gao, Jianxiong,An, Zongwen,Ma, Qiang,&Zhao, Shendan.(2020).Probability Model of Residual Strength of Materials Under Uncertain Cyclic Load.Journal of Shanghai Jiaotong University (Science),25(2),266-272.
MLA	Gao, Jianxiong,et al."Probability Model of Residual Strength of Materials Under Uncertain Cyclic Load".Journal of Shanghai Jiaotong University (Science) 25.2(2020):266-272.