... ABSTRACT: In this study, we use the Discrete Element Method (DEM) to numerically simulate the micromechanics of frictional behavior of faults. Although fault zone widths can be tens of meters, the principal slip occurs within localized zones having widths of a few millimeters. Fault slip...

... and irregularity of these lateral forces on the tunnel can also be influenced by the shape of the tunnel. Using the DEM approach, the gravity induced lateral forces on a vertical boundary near tunnels in cemented granular materials were obtained. It was determined that these lateral forces were irregularly...

.... However, it's difficult to get an accurate relationship between UCS and PLS in laboratory due to strong heterogeneity of rocks. Discrete element method (DEM) has been proved to be a great tool to simulate and analyze the behavior of rock material. In DEM, the particle properties (such as particle contact...

... engineering applications, such as tunnels, foundations and slopes, as well as hydrocarbon and geothermal energy extraction. Cracking mechanisms can be studied experimentally in the laboratory or in the field, or numerically. In the present study, distinct element method (DEM) which is capable to model various...

... fracturing, leading to a reduction of effective stress and creation of thermal cracks. The question is how much is the effective rock permeability improved by cooling down the hot reservoir. We use the discrete element method (DEM) to obtain a network of thermal fractures as the rock is frozen...

... surfaces of the rock piece are treated as “non-reflecting” boundaries, which allow stress waves to be dissipated instead of being reflected, Upstream Oil & Gas Simulation average cutting force History strength structural geology Rock mechanics shallow cut cutter DEM international...

.... This research employed the discrete element method [2], DEM, for modeling rock cutting in a setting similar to that of an advancing drilling PDC bit, while a companion paper uses the explicit finite element method [3]. DEM has previously been employed for modeling rock cutting. Huang et al. [4] has demonstrated...

... coupled LBM (lattice Boltzmann method) and DEM (discrete element method). LBM is suitable for the simulation of fluid with the complicated and time-varying boundary shape. On the other hand, DEM has gotten much attention as useful solution for a large deformation problem. Therefore, this coupled method...

... (Wyllie?s and Raymer?s) fail. At the same time, an effective-medium model, such as DEM, appears to be consistently valid if the aspect ratio is selected appropriately and then held constant for the entire concentration or porosity range. This aspect ratio can be found by calibrating the theory to the data...