Nonlinear Viscoelastoplastic Fatigue Model for Natural Gypsum Rock Subjected to Various Cyclic Loading Conditions

doi:10.1061/(ASCE)GM.1943-5622.0001982

	Nonlinear Viscoelastoplastic Fatigue Model for Natural Gypsum Rock Subjected to Various Cyclic Loading Conditions
	Zhu, Yanbo 1; Huang, Xing 1; Liu, Yaowen 1; Liu, Zhenqian 1; Lan, Hengxing 1,2; Tian, Wanghui 1
刊名	INTERNATIONAL JOURNAL OF GEOMECHANICS
	2021-05-01
卷号	21 期号:5 页码:13
关键词	Gypsum rock Cyclic loading Fatigue damage Constitutive model
ISSN号	1532-3641
DOI	10.1061/(ASCE)GM.1943-5622.0001982
通讯作者	Zhu, Yanbo(zhuyanbo@chd.edu.cn)
英文摘要	To investigate its fatigue damage characteristics, natural gypsum rock was tested under multiple cyclic loading conditions. According to the fatigue test, a nonlinear viscoelastoplastic fatigue model was established by combining several fatigue elements to describe the fatigue process of gypsum rock based on the equivalent stress assumption. The results indicate that the fatigue damage behavior of gypsum rock is substantially different from that of other types of rocks because of its particular mode of damage involving crystal and tabular crystal microstructures. The fatigue characteristics of gypsum rock, such as the fatigue life and fatigue deformation evolution, were found to be sensitive to multiple cyclic loading conditions such as the stress level, cyclic frequency, and stress amplitude. The proposed nonlinear viscoelastoplastic fatigue model could predict the fatigue deformation evolution of gypsum rock well, and the fatigue model parameters varied depending on the cyclic loading conditions. When the upper limit stress was less than the fatigue damage threshold of gypsum rock, the proposed fatigue model was similar to the modified Kelvin model, which could only describe the decelerating and stationary stages of the deformation evolution. When the upper limit stress was higher, the proposed model could describe the entire fatigue deformation process of gypsum rock well, especially the acceleration stage.
资助项目	National Natural Science Foundation of China[41877247] ; National Natural Science Foundation of China[41790443] ; National Natural Science Foundation of China[41927806] ; Fundamental Research Funds for Central Universities of Chang'an University (CN)[300102260101]
WOS关键词	MECHANICAL-PROPERTIES ; DAMAGE EVOLUTION ; SALT ROCK ; BEHAVIOR ; STRAIN ; SANDSTONE ; STRESS ; CREEP ; DEGRADATION ; STRENGTH
WOS研究方向	Engineering
语种	英语
出版者	ASCE-AMER SOC CIVIL ENGINEERS
WOS记录号	WOS:000651759900007
资助机构	National Natural Science Foundation of China ; Fundamental Research Funds for Central Universities of Chang'an University (CN)
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/162869]
专题	中国科学院地理科学与资源研究所
通讯作者	Zhu, Yanbo
作者单位	1.Changan Univ, Sch Geol Engn & Geomat, Xian 710064, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, LREIS, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Zhu, Yanbo,Huang, Xing,Liu, Yaowen,et al. Nonlinear Viscoelastoplastic Fatigue Model for Natural Gypsum Rock Subjected to Various Cyclic Loading Conditions[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2021,21(5):13.
APA	Zhu, Yanbo,Huang, Xing,Liu, Yaowen,Liu, Zhenqian,Lan, Hengxing,&Tian, Wanghui.(2021).Nonlinear Viscoelastoplastic Fatigue Model for Natural Gypsum Rock Subjected to Various Cyclic Loading Conditions.INTERNATIONAL JOURNAL OF GEOMECHANICS,21(5),13.
MLA	Zhu, Yanbo,et al."Nonlinear Viscoelastoplastic Fatigue Model for Natural Gypsum Rock Subjected to Various Cyclic Loading Conditions".INTERNATIONAL JOURNAL OF GEOMECHANICS 21.5(2021):13.