Discrete element modeling on the crack evolution behavior of brittle sandstone containing three fissures under uniaxial compression

doi:10.1007/s10409-015-0444-3

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	Discrete element modeling on the crack evolution behavior of brittle sandstone containing three fissures under uniaxial compression
	Yang, Sheng-Qi 1,2; Huang, Yan-Hua 1; Ranjith, P. G.2; Jiao, Yu-Yong 3; Ji, Jian 2
刊名	ACTA MECHANICA SINICA
	2015
卷号	31 期号:6 页码:871-889
关键词	Brittle sandstone PFC2D Three fissures Crack initiation Crack propagation Crack coalescence
ISSN号	0567-7718
DOI	10.1007/s10409-015-0444-3
英文摘要	Based on experimental results of brittle, intact sandstone under uniaxial compression, the micro-parameters were firstly confirmed by adopting particle flow code . Then, the validation of the simulated models were cross checked with the experimental results of brittle sandstone containing three parallel fissures under uniaxial compression. The simulated results agreed very well with the experimental results, including the peak strength, peak axial strain, and ultimate failure mode. Using the same micro-parameters, the numerical models containing a new geometry of three fissures are constructed to investigate the fissure angle on the fracture mechanical behavior of brittle sandstone under uniaxial compression. The strength and deformation parameters of brittle sandstone containing new three fissures are dependent to the fissure angle. With the increase of the fissure angle, the elastic modulus, the crack damage threshold, and the peak strength of brittle sandstone containing three fissures firstly increase and secondly decrease. But the peak axial strain is nonlinearly related to the fissure angle. In the entire process of deformation, the crack initiation and propagation behavior of brittle sandstone containing three fissures under uniaxial compression are investigated with respect to the fissure angle. Six different crack coalescence modes are identified for brittle sandstone containing three fissures under uniaxial compression. The influence of the fissure angle on the length of crack propagation and crack coalescence stress is evaluated. These investigated conclusions are very important for ensuring the stability and safety of rock engineering with intermittent structures.
WOS研究方向	Engineering ; Mechanics
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000367452900009
内容类型	期刊论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/3790]
专题	岩土力学所知识全产出_期刊论文国家重点实验室知识产出_期刊论文
作者单位	1.China Univ Min & Technol, Sch Mech & Civil Engn, State Key Lab Geomech & Deep Underground Engn; 2.Monash Univ, Dept Civil Engn, Deep Earth Energy Res Lab; 3.Chinese Acad Sci, Inst Rock & Soil Mech
推荐引用方式 GB/T 7714	Yang, Sheng-Qi,Huang, Yan-Hua,Ranjith, P. G.,et al. Discrete element modeling on the crack evolution behavior of brittle sandstone containing three fissures under uniaxial compression[J]. ACTA MECHANICA SINICA,2015,31(6):871-889.
APA	Yang, Sheng-Qi,Huang, Yan-Hua,Ranjith, P. G.,Jiao, Yu-Yong,&Ji, Jian.(2015).Discrete element modeling on the crack evolution behavior of brittle sandstone containing three fissures under uniaxial compression.ACTA MECHANICA SINICA,31(6),871-889.
MLA	Yang, Sheng-Qi,et al."Discrete element modeling on the crack evolution behavior of brittle sandstone containing three fissures under uniaxial compression".ACTA MECHANICA SINICA 31.6(2015):871-889.