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Probabilistic framework for fatigue life assessment of notched components under size effects

文献类型:期刊论文

作者Liao D5; Zhu SP(朱顺鹏)3,4,5; Keshtegar B2,5; Qian GA(钱桂安)4; Wang QY1,3
刊名INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
出版日期2020-09-01
卷号181页码:12
ISSN号0020-7403
关键词Notch Fatigue Size effect Failure probability Life prediction Weibull model
DOI10.1016/j.ijmecsci.2020.105685
英文摘要Structural integrity assessments with discontinuities are critical for ensuring operational life and reliability of engineering components. In this work, through combining with the generalized local model, a probabilistic framework is proposed for fatigue life assessment of notched components under size effects, in which the Smith-Watson-Topper damage parameter is utilized to characterize the multiaxial stress state at the notch tip. In particular, an effective stress concept is introduced to characterize the inhomogeneous stress distribution within the notch region. Finally, experimental data of TA19 notched specimens with different scales are utilized for model validation and comparison, results show that the proposed framework yields acceptable correlations of predicted fatigue lives with experimental ones.
分类号一类
WOS关键词FIELD INTENSITY APPROACH ; MULTIAXIAL FATIGUE ; CRITICAL DISTANCE ; LCF LIFE ; CYCLE FATIGUE ; CAST-IRON ; STRESS ; STRENGTH ; PREDICTION ; MODEL
WOS研究方向Engineering ; Mechanics
语种英语
WOS记录号WOS:000552795300007
资助机构National Natural Science Foundation of China[11972110] ; National Natural Science Foundation of China[11672070] ; Sichuan Provincial Key Research and Development Program[2019YFG0348] ; Science and Technology Program of Guangzhou, China[201904010463] ; Fundamental Research Funds for the Central Universities[ZYGX2019J040] ; Key Laboratory of Deep Earth Science and Engineering (Sichuan University), Ministry of Education[DESE201901] ; State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences
其他责任者Zhu, Shun-Peng ; Wang, Qingyuan
源URL[http://dspace.imech.ac.cn/handle/311007/84732]  
专题力学研究所_非线性力学国家重点实验室
作者单位1.Chengdu Univ, Sch Mech Engn, Chengdu 610006, Peoples R China
2.Univ Zabol, Dept Civil Engn, Zabol, Iran;
3.Sichuan Univ, Key Lab Deep Earth Sci & Engn, Minist Educ, Chengdu 610065, Peoples R China;
4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech LNM, Beijing 100190, Peoples R China;
5.Univ Elect Sci & Technol China, Sch Mech & Elect Engn, Chengdu 611731, Peoples R China;
推荐引用方式
GB/T 7714
Liao D,Zhu SP,Keshtegar B,et al. Probabilistic framework for fatigue life assessment of notched components under size effects[J]. INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,2020,181:12.
APA Liao D,朱顺鹏,Keshtegar B,钱桂安,&Wang QY.(2020).Probabilistic framework for fatigue life assessment of notched components under size effects.INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES,181,12.
MLA Liao D,et al."Probabilistic framework for fatigue life assessment of notched components under size effects".INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES 181(2020):12.

入库方式: OAI收割

来源:力学研究所

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