Experimental study on cracking behaviour of moulded gypsum containing two non-parallel overlapping flaws under uniaxial compression

doi:10.1007/s10409-016-0624-9

CORC > 地质与地球物理研究所 > 中国科学院地质与地球物理研究所 > 中国科学院页岩气与地质工程重点实验室

	Experimental study on cracking behaviour of moulded gypsum containing two non-parallel overlapping flaws under uniaxial compression
	Afolagboye, Lekan Olatayo 1,2; He, Jianming 1; Wang, Sijing 1
刊名	ACTA MECHANICA SINICA
	2017-04-01
卷号	33 期号:2 页码:394-405
关键词	Crack Coalescence Moulded Gypsum Non-parallel Flaws Primary Cracks Uniaxial Compression Test
ISSN号	0567-7718
DOI	10.1007/s10409-016-0624-9
文献子类	Article
英文摘要	Failure of rock mass that is subjected to compressive loads occurs from initiation, propagation, and linkage of new cracks from preexisting fissures. Our research investigates the cracking behaviour and coalescence process in a brittle material with two non-parallel overlapping flaws using a high-speed camera. The coalescence tensile crack and tensile wing cracks were the first cracks to occur from the preexisting flaws. The initiation stresses of the primary cracks at the two tips of each flaw were simultaneous and decreased with reduced flaw inclination angle. The following types of coalescence cracks were identified between the flaws: primary tensile coalescence crack, tensile crack linkage, shear crack linkage, mixed tensile-shear crack, and indirect crack coalescence. Coalescence through tensile linkage occurred mostly at pre-peak stress. In contrast, coalescence through shear or mixed tensile-shear cracks occurred at higher stress. Overall, this study indicates that the geometry of preexisting flaws affect crack initiation and coalescence behaviour.
WOS关键词	ROCK-LIKE MATERIAL ; FRACTURE COALESCENCE BEHAVIOR ; UNPARALLEL FISSURES ; MECHANICAL-BEHAVIOR ; RED SANDSTONE ; PROPAGATION ; SPECIMENS ; STRENGTH ; GRANITE ; DAMAGE
WOS研究方向	Engineering ; Mechanics
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000400856200017
资助机构	National Natural Science Foundation of China(41572310 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030301 ; CAS-TWAS Presidential Fellowship, University of Chinese Academy of Sciences, Beijing, China ; 41272351) ; XDB10030304) ; National Natural Science Foundation of China(41572310 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030301 ; CAS-TWAS Presidential Fellowship, University of Chinese Academy of Sciences, Beijing, China ; 41272351) ; XDB10030304) ; National Natural Science Foundation of China(41572310 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030301 ; CAS-TWAS Presidential Fellowship, University of Chinese Academy of Sciences, Beijing, China ; 41272351) ; XDB10030304) ; National Natural Science Foundation of China(41572310 ; Strategic Priority Research Program of the Chinese Academy of Sciences(XDB10030301 ; CAS-TWAS Presidential Fellowship, University of Chinese Academy of Sciences, Beijing, China ; 41272351) ; XDB10030304)
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/52952]
专题	地质与地球物理研究所_中国科学院页岩气与地质工程重点实验室
通讯作者	Afolagboye, Lekan Olatayo
作者单位	1.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Shale Gas & Geoengn, Beijing 100029, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Afolagboye, Lekan Olatayo,He, Jianming,Wang, Sijing. Experimental study on cracking behaviour of moulded gypsum containing two non-parallel overlapping flaws under uniaxial compression[J]. ACTA MECHANICA SINICA,2017,33(2):394-405.
APA	Afolagboye, Lekan Olatayo,He, Jianming,&Wang, Sijing.(2017).Experimental study on cracking behaviour of moulded gypsum containing two non-parallel overlapping flaws under uniaxial compression.ACTA MECHANICA SINICA,33(2),394-405.
MLA	Afolagboye, Lekan Olatayo,et al."Experimental study on cracking behaviour of moulded gypsum containing two non-parallel overlapping flaws under uniaxial compression".ACTA MECHANICA SINICA 33.2(2017):394-405.