Using Continuum-Discontinuum Element Method to Model the Foliation-Affected Fracturing in Rock Brazilian Test

doi:10.1155/2021/1404568

IMECH-IR > 流固耦合系统力学重点实验室

	Using Continuum-Discontinuum Element Method to Model the Foliation-Affected Fracturing in Rock Brazilian Test
	Zhang, Qunlei 1,2; Zhi, Zihan 1; Feng C(冯春)3 ; Li, Ruixia 1; Yue, Jinchao 1; Cong, Junyu 4
通讯作者	Yue, Jinchao(yuejc@zzu.edu.cn)
发表期刊	ADVANCES IN CIVIL ENGINEERING
	2021-07-07
卷号	2021 页码:9
ISSN	1687-8086
摘要	In this study, the continuum-discontinuum element method (CDEM) was used to investigate the tensile fracture mechanism of rock materials. An isotropic rock disk model and models considering different foliation inclinations were established, and three schemes were used to simulate the rock fracturing in Brazilian test. Then, the influences of the rock matrix and foliation strengths on anisotropy rock fracturing were investigated. Furtherly, simulation results were verified, and the rock fracture mechanisms were discussed. The results show that the rock fracturing in Brazilian test can be accurately simulated by CDEM, which is in accordance with the experimental results. For isotropic and horizontal foliation rock, the stress concentration in loading positions causes a local fracture of rock sample, and application of a local strengthening scheme can simulate the integral tension fracture of sample middle. As the foliation angle varies from 15 degrees to 45 degrees, the rock fracturing is affected by the stress concentration and foliation distribution. In splitting simulation, a strengthening scheme should be adopted to overcome this influence. As a result, the rock sample generates the sliding and compression-shear fracture. As the foliation angle changes from 45 degrees to 75 degrees, the foliation, rather than the matrix, dominates the fracture behavior of rock sample. For vertical foliations' rock, as the middle foliation thickness is appropriately broadened, the simulation results are reasonable. In general, the tensile strength of anisotropic rock entirely decreases with an increase of foliation angle, and the effect of foliation strength on the tensile strength rock sample is larger than that of the rock matrix.
DOI	10.1155/2021/1404568
收录类别	SCI
语种	英语
WOS记录号	WOS:000675824900004
关键词[WOS]	MECHANICAL-BEHAVIOR ; TENSILE-STRENGTH ; PARTICLE MODEL
WOS研究方向	Construction & Building Technology ; Engineering
WOS类目	Construction & Building Technology ; Engineering, Civil
资助项目	National Key R&D Program of China[2018YFC0604502] ; National Key R&D Program of China[2018YFC1505504] ; National Natural Science Foundation of China[51708513] ; China Postdoctoral Science Foundation[2020M672227] ; Henan Provincial Department of Transportation[2018J4] ; Henan Provincial Department of Transportation[2019J1]
项目资助者	National Key R&D Program of China ; National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Henan Provincial Department of Transportation
论文分区	Q3
力学所作者排名	3
RpAuthor	Yue, Jinchao
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/87165
专题	流固耦合系统力学重点实验室
作者单位	1.Zhengzhou Univ, Sch Water Conservancy Engn, Zhengzhou 450001, Peoples R China; 2.North China Univ Water Resources & Elect Power, Sch Civil Engn & Commun, Zhengzhou 450045, Peoples R China; 3.Chinese Acad Sci, Inst Mech, Beijing 100190, Peoples R China; 4.Gdem Technol Co Ltd, Beijing 100096, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Qunlei,Zhi, Zihan,Feng C,et al. Using Continuum-Discontinuum Element Method to Model the Foliation-Affected Fracturing in Rock Brazilian Test[J]. ADVANCES IN CIVIL ENGINEERING,2021,2021:9.
APA	Zhang, Qunlei,Zhi, Zihan,冯春,Li, Ruixia,Yue, Jinchao,&Cong, Junyu.(2021).Using Continuum-Discontinuum Element Method to Model the Foliation-Affected Fracturing in Rock Brazilian Test.ADVANCES IN CIVIL ENGINEERING,2021,9.
MLA	Zhang, Qunlei,et al."Using Continuum-Discontinuum Element Method to Model the Foliation-Affected Fracturing in Rock Brazilian Test".ADVANCES IN CIVIL ENGINEERING 2021(2021):9.

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