Study on Pre-Crack Marble Brazilian Disc Crack with SHPB Experiment and Numerical Simulation

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	Study on Pre-Crack Marble Brazilian Disc Crack with SHPB Experiment and Numerical Simulation
	Ma, Jiang-Feng 1; Xu, Jing-Chun 2; Zhang, Xiu-Li 3; Rong, Yao 1
	2016
会议日期	DEC 20-21, 2015
会议地点	Shenzhen, PEOPLES R CHINA
关键词	crack propagation numerical simulation SHPB experiment pre-crack Brazilian disc
卷号	53
页码	100-105
英文摘要	We presented a new two-dimensional crack criterion for DDA (Discontinuous Deformation Analysis) method to simulate the failure of pre-crack Brazilian disc marble specimens under dynamic loading. The Split Hopkinson Pressure Bar (SHPB) equipment was used to impact the specimen and check the applicability and validity of the improved theoretical fracture criteria. The mechanism of crack propagation and the influence of pre-crack on crack process are explored through experiment and numerical simulation. It is concluded that the simulation results reproduce the whole fracture process, i.e., the initiation, propagation and failure of the specimen under dynamic loading condition, agreeing favorably with those results obtained from SHPB tests. The results show that: (1) the pre-crack specimen cracks from pre-crack tips firstly, and then expands to the sides in opposite directions, eventually splitting to two separate parts; (2) the fracture mode of pre-crack rock specimen is tensile failure, and the tensile stress of crack tip is the direct driving force leading to crack propagation.
会议录	PROCEEDINGS OF THE 2015 4TH INTERNATIONAL CONFERENCE ON SUSTAINABLE ENERGY AND ENVIRONMENTAL ENGINEERING
会议录出版者	ATLANTIS PRESS
会议录出版地	PARIS
语种	英语
WOS研究方向	Engineering ; Environmental Sciences & Ecology
WOS记录号	WOS:000378046300019
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4864]
专题	岩土力学所知识全产出_会议论文
作者单位	1.Jiangxi Transportat Inst ; 2.Ganzhou Expressway Co; 3.Chinese Acad Sci, Inst Rock & Soil Mech
推荐引用方式 GB/T 7714	Ma, Jiang-Feng,Xu, Jing-Chun,Zhang, Xiu-Li,et al. Study on Pre-Crack Marble Brazilian Disc Crack with SHPB Experiment and Numerical Simulation[C]. 见:. Shenzhen, PEOPLES R CHINA. DEC 20-21, 2015.