The Combined Finite-Discrete Element Method applied to the Study of Rock Fracturing Behavior in 3D

Conference · Sat Jan 01 00:00:00 EST 2011

OSTI ID:1011073

Rougier, Esteban ^[1]; Bradley, Christopher R ^[1]; Broom, Scott T ^[2]; Knight, Earl E ^[1]; Munjiza, Ante ^[3]; Sussman, Aviva J ^[1]; Swift, Robert P ^[1]

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1. Los Alamos National Laboratory
2. Geomechanics Sandia National Laboratories
3. School of Engineering and Material Sciences, Queen Mary, University of London

Since its introduction the combined finite-discrete element method (FEM/DEM), has become an excellent tool to address a wide range of problems involving fracturing and fragmentation of solids. Within the context of rock mechanics, the FEM/DEM method has been applied to many complex industrial problems such as block caving, deep mining techniques, rock blasting, seismic waves, packing problems, rock crushing problems, etc. In the real world most of the problems involving fracture and fragmentation of solids are three dimensional problems. With the aim of addressing these problems an improved 2D/3D FEM/DEM capability has been developed at Los Alamos National Laboratory (LANL). These capabilities include state of the art 3D contact detection, contact interaction, constitutive material models, and fracture models. In this paper, Split Hopkinson Pressure Bar (SHPB) Brazilian experiments are simulated using this improved 2D/3D FEM/DEM approach which is implemented in LANL's MUNROU (Munjiza-Rougier) code. The results presented in this work show excellent agreement with both the SHPB experiments and previous 2D numerical simulations performed by other FEM/DEM research groups.

• Research Organization: Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
• Sponsoring Organization: DOE/LANL
• DOE Contract Number: AC52-06NA25396
• OSTI ID: 1011073
• Report Number(s): LA-UR-11-10282; TRN: US201109%%130
• Resource Relation: Conference: 45th US Rock Mechanics / Geomechanics Symposium ; 2011-06-26 - 2011-06-29 ; San Francisco, California, United States
• Country of Publication: United States
• Language: English

Related Subjects

Earth Sciences
Geosciences (58)
CALCULATION METHODS
CAVING
CRUSHING
DETECTION
DISCRETE ORDINATE METHOD
EXPLOSIVE FRACTURING
FINITE ELEMENT METHOD
FRACTURES
FRACTURING
FRAGMENTATION
LANL
MINING
ROCK MECHANICS
SEISMIC WAVES
THREE-DIMENSIONAL CALCULATIONS
TWO-DIMENSIONAL CALCULATIONS