Numerical and Experimental Study on the Cracking Behavior of Marble with En-Echelon Flaws

doi:10.1007/s00603-019-01849-x

CORC > 武汉岩土力学研究所 > 中科院武汉岩土力学所 > 岩土力学所知识全产出 > 期刊论文

	Numerical and Experimental Study on the Cracking Behavior of Marble with En-Echelon Flaws
	Cheng, Yi ; Jiao, Yu-Yong ; Tan, Fei
刊名	ROCK MECHANICS AND ROCK ENGINEERING
	2019
卷号	52 期号:11 页码:4319-4338
关键词	En-echelon flaws Flat-jointed model Tensile crack Shear crack Microcrack Carrara marble
ISSN号	0723-2632
DOI	10.1007/s00603-019-01849-x
英文摘要	En-echelon fractures have been commonly observed in nature. To understand the interaction of en-echelon flaws, numerical simulation with flat-jointed model and laboratory experiment has been conducted on specimens containing en-echelon flaws of various configurations. With reliable micro-parameters of the flat-joint contact through a comprehensive calibration, numerical results reveal a strong interaction in flaw configurations of extensional bridges but a mild interaction in flaw configurations of contractional bridges. The patterns of linking cracks are found to be dependent on the flaw configurations. Furthermore, two typical linking cracks, tensile and shear cracks, are identified in terms of contact force evolution, crack development, micro-components and damage zone width. Experimental results not only verify the above conclusions given by simulation, but also provide more distinctions between tensile and shear cracks in grain scale. Based on these findings, an empirical correlation is suggested between debonding behavior in PFC models and microcracking behavior in laboratory experiments. Finally, the tendency of crack initiation stress and peak stress in simulation and experiment is compared and explained with respect to the flaw-array angle. A good agreement between simulation and experiment indicates the capability of the flat-jointed model of PFC2D in handling complex crack coalescence problems in rocks.
WOS研究方向	Engineering ; Geology
语种	英语
WOS记录号	WOS:000495357100010
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/14829]
专题	岩土力学所知识全产出_期刊论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Hubei, Peoples R China 2.Nanyang Technol Univ, Sch Civil & Environm Engn, Singapore, Singapore; 3.China Univ Geosci, Fac Engn, Wuhan 430074, Hubei, Peoples R China;
推荐引用方式 GB/T 7714	Cheng, Yi,Jiao, Yu-Yong,Tan, Fei. Numerical and Experimental Study on the Cracking Behavior of Marble with En-Echelon Flaws[J]. ROCK MECHANICS AND ROCK ENGINEERING,2019,52(11):4319-4338.
APA	Cheng, Yi,Jiao, Yu-Yong,&Tan, Fei.(2019).Numerical and Experimental Study on the Cracking Behavior of Marble with En-Echelon Flaws.ROCK MECHANICS AND ROCK ENGINEERING,52(11),4319-4338.
MLA	Cheng, Yi,et al."Numerical and Experimental Study on the Cracking Behavior of Marble with En-Echelon Flaws".ROCK MECHANICS AND ROCK ENGINEERING 52.11(2019):4319-4338.