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

文献类型：期刊论文

作者Afolagboye, Lekan Olatayo1,2; He, Jianming1; Wang, Sijing1
刊名ACTA MECHANICA SINICA
出版日期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
DOI10.1007/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
WOS记录号WOS:000400856200017
出版者SPRINGER HEIDELBERG
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)
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.

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来源：地质与地球物理研究所

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