Modelling progressive failure in fractured rock masses using a 3D discrete element method

Scholtès, Luc; Donzé, Frédéric‐Victor

doi:10.1016/j.ijrmms.2012.02.009

Cited by 232 publications

(105 citation statements)

References 34 publications

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“…It is now commonly employed for studying aspects of mechanical behavior on the microscale for granular materials (Scholtès et al, 2009) and rocks (Scholtès and Donzé, 2012). It is based on the description of materials as a collection of individual particles interacting at contact points.…”

Section: Introductionmentioning

confidence: 99%

Pore-Scale Flow Simulations: Model Predictions Compared with Experiments on Bi-Dispersed Granular Assemblies

Tong

Catalano

Chareyre

2012

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Oil & Gas Science and Technology -Rev. IFP Energies nouvelles, Vol. 67 (2012), No. 5, pp. 743-752 Copyright © 2012, IFP Energies nouvelles DOI: 10.2516 Pore2Field -Flows and Mechanics in Natural Porous Media from Pore to Field Scale Pore2Field -Physique des écoulements en milieux poreux naturels : de l'échelle du pore à l'échelle du réservoir IFP Energies nouvelles International Conference Rencontres Scientifiques d'IFP Energies nouvellesOil & Gas Science and Technology -Rev. IFP Energies nouvelles, Vol. 67 (2012)

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Section: Introductionmentioning

confidence: 99%

Pore-Scale Flow Simulations: Model Predictions Compared with Experiments on Bi-Dispersed Granular Assemblies

Tong

Catalano

Chareyre

2012

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…We employ the open-source 3-D DEM software package granular LAMMPS (Landry et al, 2003;Plimpton, 1995), which was modified by Marketos (2013) and by Van den Ende, Marketos, et al (2018). The DEM approach is summarized in supporting information S1 (Guo & Morgan, 2006;Hanley et al, 2015;Jiang et al, 2010;Mair & Abe, 2008;Scholtès & Donzé, 2012). For a detailed description of the numerical method and the implementation of intergranular pressure solution in DEM, the reader is referred to Van den Ende, Marketos, et al (2018).…”

Section: Methodsmentioning

confidence: 99%

Time-dependent compaction as a mechanism for regular stick-slips

Ende¹,

Niemeijer²

2018

Preprint

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Owing to their destructive potential, earthquakes receive considerable attention from laboratory studies. In friction experiments, stick-slips are studied as the laboratory equivalent of natural earthquakes, and numerous attempts have been made to simulate stick-slips numerically using the discrete element method (DEM). However, while laboratory stick-slips commonly exhibit regular stress drops and recurrence times, stick-slips generated in DEM simulations are highly irregular. This discrepancy highlights a gap in our understanding of stick-slip mechanics, which propagates into our understanding of earthquakes. In this work, we show that regular stick-slips emerge in DEM when time-dependent compaction by pressure solution is considered. We further show that the stress drop and recurrence time of stick-slips are directly controlled by the kinetics of pressure solution. Since compaction is known to operate in faults, this mechanism for frictional instabilities directly relates to natural seismicity. Plain Language SummaryEarthquakes have a big impact on the society and are therefore intensively studied in laboratory settings. The study of laboratory-scale earthquakes, the so-called stick-slips, generates new insights into the origin and behavior of earthquakes in nature. At present, computer simulations of stick-slips have not been able to reproduce prominent laboratory observations, which shows that the origin of stick-slips, and of natural earthquakes, is not yet fully understood. In this work, we present computer simulations that succeed to reproduce the laboratory observations, thereby revealing that time-dependent compaction is of great importance to stick-slips and natural earthquakes. These results help to further understand the complex behavior of earthquakes in nature.

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“…Discrete element method (DEM) is proved to be a very effective method in modelling rock-like materials [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. The discontinuous nature of DEM makes DEM very suitable for dealing with the initiation and propagation of micro cracks in rock-like materials.…”

Section: Introductionmentioning

confidence: 99%

Bonded-Particle Model with Nonlinear Elastic Tensile Stiffness for Rock-Like Materials

Ouyang

Chen

2017

Applied Sciences

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Abstract:The bonded-particle model (BPM) is a very efficient numerical method in dealing with initiation and propagation of cracks in rocks and can model the fracture processes and most of macro parameters of rocks well. However, typical discrete element method (DEM) underestimates the ratio of the uniaxial compressive strength to the tensile strength (UCS/TS). In this paper, a new DEM method with a nonlinear elastic tensile model embedded in BPM is proposed, which is named as nonlinear elastic tensile bonded particle model (NET-BPM). The relationships between micro parameters in NET-BPM and macro parameters of specimens are investigated by simulating uniaxial compression tests and direct tension tests. The results show that both the shape coefficient of the nonlinear elastic model and the bond width coefficient are important in predicting the value of UCS/TS, whose value ranging from 5 to 45 was obtained in our simulations. It is shown that the NET-BPM model is able to reproduce the nonlinear behavior of hard rocks such as Lac du Bonnet (LDB) granite and the quartzite under tension and the ratio of compressive Young's modulus to tensile Young's modulus higher than 1.0. Furthermore, the stress-strain curves in the simulations of LDB granite and the quartzite with NET-BPM model are in good agreement with the experimental results. NET-BPM is proved to be a very suitable method for modelling the deformation and fracture of rock-like materials.

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Modelling progressive failure in fractured rock masses using a 3D discrete element method

Cited by 232 publications

References 34 publications

Pore-Scale Flow Simulations: Model Predictions Compared with Experiments on Bi-Dispersed Granular Assemblies

Pore-Scale Flow Simulations: Model Predictions Compared with Experiments on Bi-Dispersed Granular Assemblies

Time-dependent compaction as a mechanism for regular stick-slips

Bonded-Particle Model with Nonlinear Elastic Tensile Stiffness for Rock-Like Materials

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