... ABSTRACT: While the conventional Discrete Element Method (DEM) is a popular tool for investigating breakage, it falls short of accurately capturing the natural morphology of particles. Moreover, previously introduced techniques for simulating irregular particles' breakage have simplified...

... (heterogeneity-induced local tension, closure of an initial microcrack fabric, and grain breakage) that occur at the grain scale. The laboratory-scale behavior of the synthetic material is summarized as follows. The material exhibits behavior during direct-tension and triaxial compression tests that matches...

..., Finland was prepared to length and diameter ratio of 1:1 in accordance with recommendations of the International Society for Rock Mechanics (ISRM) for dynamic tests. This was followed by measurement of characteristic impedance of specimen under cyclic dynamic stress until breakage occurred. Results reveal...

... rock breakage (LIRB) have emerged as promising alternatives. LIRB, a cutting-edge technique, employs high-energy lasers to fracture rocks without physical contact, avoiding the use of explosives. This paper provides a comprehensive review, begins by delving into the fundamental principles of LIRB...

... ABSTRACT: The fault zone generally undergoes grain breakage during shear slip events, resulting in the change of shear mode and pore structure in fault gouge. We establish a discrete elemental model of shear tests of granular fault gouge under different normal stresses at the constant velocity...

... at the maximum value of the normal contact force, and no new bonds are formed after the breakage. In this research, we implemented the coarse-graining methods for the modified JKR model. A scaling law was developed for each material parameter in the model such as density, surface energy density, Young’s modulus...

... ABSTRACT: Compactive deformation in brittle-ductile transition involves particle crushing, cement bond breakage and pore collapse in porous reservoir rocks while subjected to high confining stresses. Despite knowing the overall hydro-mechanical response of porous reservoir rocks, quantitative...

... particles were evaluated by the means of Scanning Electron Microscopy and the Energy Dispersive Spectroscopy. Cement dosage in relation to different strength levels of the natural sandstone reservoirs is assessed and both the macroscopic and microscopic analyses present the characteristics of bond breakage...

... to capture the rate-dependent behavior of unconsolidated sand while tracking grain breakage processes at the microscale. The energetics of subcritical crack propagation at grain scale is firstly investigated and the characteristics of its dissipation function are observed. A similar strategy is then used...

... diameter Reservoir Characterization tensile stress truncated disc Serati University truncated brazilian disc brittle material Brazilian specimen Upstream Oil & Gas fracture tensile strength breakage specimen loading point Brazilian disc ARMA 17-834 Modified Brazilian Test for Indirect...

... Abstract: During comminution, several energy dissipation processes operate simultaneously, including plastic work due to internal friction, fracture energy release due to particle breakage, and plastic work due to the rearrangement of fragments. Recent studies show that the plastic work due...

... Abstract: This paper presents experiments showing that the nominal tensile strength of granite specimens measured in three-point bending tests increases with the logarithm of the loading rate. Based on these experiments, we propose a criterion for macroscopic breakage wherein failure occurs...

... Abstract: A precise delineation of geometallurgical domains in an orebody can lead to improved production planning and comminution efficiency. This requires an accurate characterization of the variability of ore response to comminution and breakage force. Experimental analyses have shown...

... Abstract: This paper discusses a continuum approach to track the evolution of permeability in granular materials subjected to high-pressure compaction and grain breakage. To cope with a range of loading configurations and account for changes in grain size distribution, the Breakage Mechanics...

... modeling wellbore design geotechnique reservoir characterization upstream oil & gas wall distribution sand particle breakage diameter loading wall peak force particle compression test ARMA 15-XXXX Discrete Element modeling and analysis of shielding effects during the crushing of a grain...

... occurs in the CTB layer under cyclic moving wheels carrying constant vertical loads than that caused by cyclic moving wheels carrying sinusoidal vertical loads both at the same mean stress. 1. INTRODUCTION The breakage of particles relies on multiple factors; namely, particle size distribution (PSD...

... Abstract: The paper presents a conceptual approach for capturing the interplay between multi-physical processes and the mechanism of particle breakage in granular geomaterials. The study addresses two specific processes in a separate fashion: (i) the interaction between granular solids...

.... If the impact velocity is v , the particles? velocities associated with the compressive waves going into the drill string and the piston are v/2 and ?v/2 respectively. Reservoir Characterization reservoir geomechanics structural geology Upstream Oil & Gas piston Efficiency mechanism breakage...

... shallow pre-drilled hole in the rock or concrete to be broken by means of a barrel incorporating a hole boRom sealing method. The high viscosity of the foam (as compared to a gas) combined with its stored energy characteristics (as compared to a liquid) result in consistent and controlled breakage...

... (1982) simulated crushing in a hammer mill and found a correlation between a breakage event and the coefficient of transfer of linear momentum. To our knowledge, no force-time records have been published for rock fragmentation impact crushing. Such records are considered essential in order to understand...