A critical plane-based multiaxial fatigue life prediction method considering the material sensitivity and the shear stress

doi:10.1016/j.ijpvp.2021.104532

CORC > 兰州理工大学 > 兰州理工大学 > 机电工程学院

	A critical plane-based multiaxial fatigue life prediction method considering the material sensitivity and the shear stress
	Liu, Jianhui; Ran, Yong; Wei, Yaobing; Zhang, Zhen
刊名	INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING
	2021-12-01
卷号	194
关键词	Multiaxial fatigue The shear stress The critical plane method Material sensitivity coefficient
ISSN号	0308-0161
DOI	10.1016/j.ijpvp.2021.104532
英文摘要	The material sensitivity coefficient of Fatemi-Socie model (FS model) is proved to be not a constant for different materials and the effect of the shear stress on fatigue life is not considered. In this condition, a new multiaxial fatigue prediction model considering the shear stress and material sensitivity is established based on the critical plane method in this paper. Firstly, the material plane with the maximum shear strain amplitude is defined as the critical plane and a calculating method to determine the location of critical plane is presented. Secondly, a calculating method of material sensitivity coefficient k' is proposed considering the effects of both the stress and strain on the critical plane by investigating the relationship between material sensitivity coefficient and the multiaxial fatigue life. Besides, the effect of the normal strain amplitude on the critical plane is considered because it has a certain impact on multiaxial fatigue life. Finally, four materials, including 45 steel, 316 L stainless steel, GH4169 alloy, and 7075-T651 aluminum alloy, are adopted to verify the feasibility and correctness of the proposed model under the proportional and non-proportional loading condition by comparing the equivalent strain model, the maximum shear strain model, the SWT model, KBM model, and FS model with the experimental result. The comparison results show that the prediction life of the proposed model is only second to the KBM model under multiaxial proportional loadings, but the prediction capability is superior to the other five models and the majority of the prediction results are within the scatter band with factor 3 under nonproportional loadings.
WOS研究方向	Engineering
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000705529000040
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/150043]
专题	机电工程学院兰州理工大学
作者单位	Lanzhou Univ Technol, Sch Mech & Elect Engn, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jianhui,Ran, Yong,Wei, Yaobing,et al. A critical plane-based multiaxial fatigue life prediction method considering the material sensitivity and the shear stress[J]. INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING,2021,194.
APA	Liu, Jianhui,Ran, Yong,Wei, Yaobing,&Zhang, Zhen.(2021).A critical plane-based multiaxial fatigue life prediction method considering the material sensitivity and the shear stress.INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING,194.
MLA	Liu, Jianhui,et al."A critical plane-based multiaxial fatigue life prediction method considering the material sensitivity and the shear stress".INTERNATIONAL JOURNAL OF PRESSURE VESSELS AND PIPING 194(2021).