Discrete element simulation of rock cutting

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August undefined, 2024

WebParticle Flow Code (PFC) was used to study the cutting force of the picks in linear [21–23] and rotary [1, 24] cutting process when the cutting thickness was constant and to develop the crack propagation [22, 23, 25] of coal and rock in the linear cutting process. Extended Discrete Element Method (EDEM) was used to establish linear conical ... Web13 rows · Sep 1, 2011 · The discrete element model of rock cutting is capable to represent correctly complexity of a ...

Numerical Simulation of Lunar Rock Simulant Cutting Load …

WebApr 11, 2024 · The drilling of lunar soil using the cutting edge of a rotary drill bit is a complicated mechanical tool–soil coupling process. ... The discrete element model used … WebApr 6, 2024 · An underground coal gasification (UCG) process is strongly exothermic, which will cause thermal damage on rock cap. We proposed a new thermal damage numerical model based on a two dimension particle flow code (PFC2D) to analyze the inception and extension of cracks on pre-cracked red sandstone, which were thermally treated at a … ronald mackenzie playwright

Discrete element modeling and simulation study on …

WebApr 19, 2024 · The effect of grain interlocking in discrete element modelling of rock cutting Full Article; Figures & data; References; Citations; Metrics; Reprints & Permissions; ... while for low values the simulation behaved more realistically for the specific type of rock. It is concluded that the use of the interaction range coefficient can substantially ... WebNov 16, 2024 · The three dimensional (3D) discrete element method (DEM) was employed to simulate soil excavation tests on a discrete analogue of lunar regolith simulant. The excavation process was analyzed and the affected area was identified from void ratio changes, APR field, particle displacements and velocities. After which the effects of test … WebMay 1, 2024 · The rock was cut by pickaxe cutter with an attack angle of 55°, a back rake angle of 10°, a cutting speed of 1 m s −1 and a cutting distance of 120 mm. The cutting depths were 5, 10 and 15 mm. Figure … ronald maines obituary

Aerospace Free Full-Text Simulation of Drilling Temperature …

Coupled Thermo-hydro-mechanical Simulation of …

WebJan 1, 2024 · For this purpose, a computer program named Particle Flow Code in three dimensions (PFC3D) based on discrete element method (DEM) was used. The rock sample was models by graded particle assemblies and the micro-properties were calibrated by modeling the uniaxial compressive strength tests. WebSep 1, 2013 · Compared with other numerical modeling methods, the discrete element method (DEM) is a favorable candidate due to its advantages in efectively accommodating the large deformations and fractures... ronald malecWebDec 3, 2024 · Simulation of a Rock cutting process with Discrete Element Method (DEM) BECKER 3D - ThreeParticle/CAE 260 subscribers Subscribe 2.2K views 3 years ago Rock cutting is a … ronald mailhot nh

"WebJun 3, 2024 · Analytical and Numerical Modeling of Soil Cutting and Transportation During Auger Drilling Operation Mohamed A. A. Abdeldayem, Mohamed A. A. Abdeldayem Mech. Equip. Dept., Military Technical College Cairo 11766, Egypt e-mail: [email protected] Search for other works by this author on: This Site PubMed … " - Discrete element simulation of rock cutting

Discrete element simulation of rock cutting

Stress evolution of rock breakages by a disc cutter …

WebJan 1, 2024 · The single-factor analysis method was used to study the variation law of the cutting depth, traction speed, and the drum’s rotational speed on the three-way force acting on the drum, the coal loading rate, and the trajectory of the coal particles. http://gradfaculty.usciences.edu/files/education/Understanding-The-Discrete-Element-Method-Simulation-Of-Non-Spherical-Particles-For-Granular-And-Multi-Body-Systems.pdf

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WebThis is the first part of a series of two papers concerned with an analysis of the cutting and the indentation processes based on using the discrete element method. In this paper, … WebApr 10, 2024 · Based on rock scratch tests and finite element rock cutting model, a discrete element modeling (DEM) rock cutting model was established to analyze the …

WebNov 19, 2015 · The third part of the book proceeds with the most important computational and simulation methods including Discrete Element Methods, the Combined Finite-Discrete Element Method, Molecular Dynamics ... WebApr 11, 2024 · The drilling of lunar soil using the cutting edge of a rotary drill bit is a complicated mechanical tool–soil coupling process. ... The discrete element model used in the simulation is presented in ... Wen, G.L.; Liang, Z.W. Thermal simulation of drilling into lunar rock simulant by discrete element method. Acta Astronaut. 2024, 160, 378 ...

WebApr 8, 2024 · The discrete element method (DEM) is a robust and powerful simulation tool developed by Potyondy and Cundall , which is capable of modelling the evolution of … WebDec 7, 2024 · The discrete element software was used in the literature [ 15] to study the dynamic process of the coal rock being cut by the coal mining machine, and the influence of different cutting angles on the coal loading rate, cutting resistance, and the cutting energy consumption of shearer was studied.

WebFeb 8, 2024 · Therefore, the influence of cutting sequence on rock breaking effect is considered in this paper. 3 Discrete Element Model PFC is an analysis code of the particle system based on the discrete element method, which studies the mechanical properties and behavior of the medium from a meso level.

WebDiscrete element with zero-thickness is established on the co-plane of two finite elements, so that the discrete element shares the same node with different numbers with the surface of the two finite elements respectively (Fig. 1), and the discrete elements are generated among all finite elements of the model (Fig. 2).Before rock fracture, the stress and strain … ronald malfiWeb1 day ago · In this paper, the finite element-discrete element coupling method (FDEM) is used to establish a numerical simulation model that can more realistically characterize the inter-granular and intragranular weak surface structure of heterogeneous granite. The effect of different cutting depths on the rock-breaking efficiency of PDC cutter is explored. ronald malloy obituaryWebApr 6, 2024 · The collapse of overlying rocks caused by the instability of residual coal pillars during lower coal seam mining significantly impacts its safety. This paper focuses on the … ronald marchand obituaryWebSep 1, 2011 · Discrete element thermomechanical modelling of rock cutting with valuation of tool wear. The paper presents a thermomechanical discrete element model … ronald malloryWebApr 5, 2024 · In this paper, a two-dimensional eXtended Finite Element Method (XFEM) solution is presented for the hydro-mechanically coupled hydro-frac-induced propagation of multiple fractures in rocks. Fractures are considered one-dimensional objects, and the rock matrix is regarded as a two-dimensional medium. ronald malfi authorWebApr 6, 2024 · The collapse of overlying rocks caused by the instability of residual coal pillars during lower coal seam mining significantly impacts its safety. This paper focuses on the gentle dipping coal seam group and utilizes the discrete element method (DEM) as the basis to comprehensively consider multiple factors through orthogonal experiments. In so … ronald mallet an astrophysicistWebSep 1, 2013 · This paper presents numerical modelling of rock cutting processes. The model consists of a tool-rock system. 3D geometry is considered in the model. The rock is modelled using the discrete element… Expand 44 Deformation and fracture of rocks loaded with spherical indenters ronald mallonee orlando fl