The strain characteristics and corresponding model of rock materials under uniaxial cyclic load/unload compression and their deformation and fatigue damage analysis

doi:10.1007/s00419-021-01899-0

	The strain characteristics and corresponding model of rock materials under uniaxial cyclic load/unload compression and their deformation and fatigue damage analysis
	Zhang, Chunyang 2,3; Wang, Yixian 1,4; Ruan, Hang 3; Ke, Bo 2; Lin, Hang 5
刊名	ARCHIVE OF APPLIED MECHANICS
	2021-02-27
页码	16
关键词	Fatigue properties Deformation and damage development Cyclic load– unload tests An elastic-visco-plastic model Red sandstone samples
ISSN号	0939-1533
DOI	10.1007/s00419-021-01899-0
英文摘要	The fatigue characteristics of rock materials are usually studied by cyclic load-unload tests, and the deformation and damage development reflect their weakening characteristics. In this paper, according to the mechanical characteristics of rock materials during load/unload cycles, the total strain can be separated into three types, that is, elastic strain, viscoelastic strain, and viscoplastic strain. The elastic strain is linear with stress, and viscoelastic strain exhibits a special behavior after unloading, the viscoplastic strain also displays its own unique features and reflects the damage in rocks. Based on their unique characteristics, we establish elastic, viscoelastic, and viscoplastic submodels, then an elastic-visco-plastic model can be obtained by connecting three submodels in series, which can reflect the development of the law of different strains. In order to verify the reliability of the model, red sandstone samples are selected for cyclic load/unload tests. The results show that the collected strain-time data are well fitted by the model. In addition, the characteristics of strain-time curves imply the deformation and damage development of rocks during load/unload cycles.
资助项目	Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[Z020015] ; State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology[KFJJ20] ; National Natural Science Foundation of China[42077249]
WOS研究方向	Mechanics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000622677700001
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/25725]
专题	中科院武汉岩土力学所
通讯作者	Ruan, Hang
作者单位	1.Hefei Univ Technol, Sch Civil Engn, Hefei 230009, Peoples R China 2.Wuhan Univ Technol, Sch Resources & Environm Engn, Wuhan 430070, Peoples R China 3.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 4.Beijing Inst Technol, State Key Lab Explos Sci & Technol, Beijing 100081, Peoples R China 5.Cent South Univ, Sch Resources & Safety Engn, Changsha 410083, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Chunyang,Wang, Yixian,Ruan, Hang,et al. The strain characteristics and corresponding model of rock materials under uniaxial cyclic load/unload compression and their deformation and fatigue damage analysis[J]. ARCHIVE OF APPLIED MECHANICS,2021:16.
APA	Zhang, Chunyang,Wang, Yixian,Ruan, Hang,Ke, Bo,&Lin, Hang.(2021).The strain characteristics and corresponding model of rock materials under uniaxial cyclic load/unload compression and their deformation and fatigue damage analysis.ARCHIVE OF APPLIED MECHANICS,16.
MLA	Zhang, Chunyang,et al."The strain characteristics and corresponding model of rock materials under uniaxial cyclic load/unload compression and their deformation and fatigue damage analysis".ARCHIVE OF APPLIED MECHANICS (2021):16.