Investigation of granite fracture under three-point bending using the meso-modeling approach considering the random distribution of poly-crystals

doi:10.1007/s12517-020-05784-y

	Investigation of granite fracture under three-point bending using the meso-modeling approach considering the random distribution of poly-crystals
	Li, Xiaojing 1,2; Bai, Yifan 2; He, Peijie 2; Yue, Xiaolei 2; Zhang, Yan 2
刊名	ARABIAN JOURNAL OF GEOSCIENCES
	2020-08-28
卷号	13 期号:17 页码:14
关键词	Modeling method Poly-crystals Damage Fracture characteristic Crack propagation
ISSN号	1866-7511
DOI	10.1007/s12517-020-05784-y
英文摘要	A three-dimensional meso-modeling approach based on Weibull distribution for rock is proposed to study the fracture behavior of rock. And the macro-meso model of granite with random poly-crystals is developed for numerical studies. By controlling the kinetic energy of the model system and combining the erosion criterion, a method for accelerating the calculation of quasi-static problems is presented. Through the comparative analysis of numerical simulation and experimental test, the applicability and reliability of the modeling method in the study of spatial heterogeneity of rock materials are verified. Using finite element analysis, the fracture characteristics of granite at different loading rates are obtained. The effect of loading rate includes the following aspects: (1) the tensile strength and fracture toughness increase with the increase of loading rate; (2) the dynamic damage evolution process varies greatly under different loading speeds; (3) the increase of loading rate accelerates the crack propagation, and some cracks that originally propagate along the poly-crystals surface will propagate along the block. These studies offer a meso-scale strategy to study the fracture growth of rock.
资助项目	National Natural Science Foundation of China[51979156] ; National Natural Science Foundation of China[51779134] ; National Natural Science Foundation of China[51579142] ; Open Research Fund of State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences[Z018006]
WOS研究方向	Geology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000567415700006
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/24765]
专题	中科院武汉岩土力学所
通讯作者	Li, Xiaojing
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn, Wuhan 430071, Peoples R China 2.Shandong Jianzhu Univ, Sch Civil Engn, Jinan 250101, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiaojing,Bai, Yifan,He, Peijie,et al. Investigation of granite fracture under three-point bending using the meso-modeling approach considering the random distribution of poly-crystals[J]. ARABIAN JOURNAL OF GEOSCIENCES,2020,13(17):14.
APA	Li, Xiaojing,Bai, Yifan,He, Peijie,Yue, Xiaolei,&Zhang, Yan.(2020).Investigation of granite fracture under three-point bending using the meso-modeling approach considering the random distribution of poly-crystals.ARABIAN JOURNAL OF GEOSCIENCES,13(17),14.
MLA	Li, Xiaojing,et al."Investigation of granite fracture under three-point bending using the meso-modeling approach considering the random distribution of poly-crystals".ARABIAN JOURNAL OF GEOSCIENCES 13.17(2020):14.