Probabilistic Fatigue Life Framework of Notched Specimens Based on the Weibull Distribution Under Multiaxial Loading

doi:10.1007/s10338-024-00472-w

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	Probabilistic Fatigue Life Framework of Notched Specimens Based on the Weibull Distribution Under Multiaxial Loading
	Wang, Jie; Liu, Jianhui; Lu, Jumei; He, Yingbao; Pan, Xuemei; Zhang, Ziyang
	2024-03-14
在线发表时间	2024-03
发表期刊	ACTA MECHANICA SOLIDA SINICA
ISSN	0894-9166
摘要	In engineering applications, the notch effect and size effect significantly influence the evaluation of fatigue performance in components, necessitating special attention in life prediction. This study proposes a new probabilistic model, based on the theory of critical distance (TCD), to predict fatigue life, with the aim of quantitatively assessing the impact of notch effect and size effect. The stress distribution on the critical plane is first characterized using a sixth-order multinomial function, and the relative stress gradient function is utilized to calculate the value of the critical distance. Furthermore, the effect of the ratio of shear strain to normal strain on fatigue life under multiaxial loading is considered. Additionally, the integration of the Weibull distribution into the TCD is employed for conducting probabilistic modeling of fatigue life. Finally, fatigue experiments are conducted on notched specimens of Q355D steel, demonstrating that the life prediction results under 50% survival probability are superior to the traditional TCD method.
关键词	Theory of critical distance (TCD) Notch effect Size effect Strain ratio Weibull distribution
DOI	10.1007/s10338-024-00472-w
收录类别	SCIE ; EI
语种	英语
资助项目	National Natural Science Foundation of China
WOS研究方向	Materials Science ; Mechanics
WOS类目	Materials Science, Multidisciplinary ; Mechanics
WOS记录号	WOS:001183202500001
出版者	SPRINGER
EI入藏号	20241215759157
EI主题词	Fatigue of materials
EI分类号	631.1 Fluid Flow, General ; 922.2 Mathematical Statistics ; 931.1 Mechanics ; 951 Materials Science
原始文献类型	Article;Early Access
EISSN	1860-2134
引用统计	无
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/169888
专题	机电工程学院
通讯作者	Liu, Jianhui
作者单位	Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou 730050, 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	Wang, Jie,Liu, Jianhui,Lu, Jumei,et al. Probabilistic Fatigue Life Framework of Notched Specimens Based on the Weibull Distribution Under Multiaxial Loading[J]. ACTA MECHANICA SOLIDA SINICA,2024.
APA	Wang, Jie,Liu, Jianhui,Lu, Jumei,He, Yingbao,Pan, Xuemei,&Zhang, Ziyang.(2024).Probabilistic Fatigue Life Framework of Notched Specimens Based on the Weibull Distribution Under Multiaxial Loading.ACTA MECHANICA SOLIDA SINICA.
MLA	Wang, Jie,et al."Probabilistic Fatigue Life Framework of Notched Specimens Based on the Weibull Distribution Under Multiaxial Loading".ACTA MECHANICA SOLIDA SINICA (2024).