Discrete element modeling of rock cutting

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August undefined, 2024

WebApr 19, 2024 · It is concluded that the use of the interaction range coefficient can substantially provide more realistic simulations of the cutting process by capturing both the rock-cutting tool interaction and the failure mechanism. KEYWORDS: Rock cutting discrete element modelling fast Fourier transformation interaction range coefficient … WebThe ductile mode is associated with the development of a damage zone, whereas the brittle mode involves the growth of macrocracks. This is the first part of a series of two papers …

INCLUSION OF PORE PRESSURE EFFECTS IN DISCRETE ELEMENT MODELING OF ROCK ...

WebJan 1, 2010 · Discrete Element Modeling Discrete element modeling of rock cutting usng crushable particles Authors: Jorge Alejandro Mendoza Baker Hughes Incorporated Isaac Gamwo National Energy... WebDec 7, 2024 · Abstract. Taking the MG2 55/250-BWD shearer as the research object and considering the influence of the rock on the working performance of the shearer, the shearer-coal-rock coupled discrete element model was established and its dynamic working process has been studied. The single-factor analysis method was used to study … folio amount

Discrete element thermomechanical modelling of rock cutting …

WebMar 5, 2015 · Discrete element modelling of rock cutting: from ductile to brittle transition - He - 2015 - International Journal for Numerical and Analytical Methods in Geomechanics … WebNov 1, 2024 · In order to better understand the fracture and removal mechanism for rock materials during abrasive machining, a two-dimensional scratch model was developed using the hybrid finite-discrete element method (FDEM). The crack propagation during the abrasive machining process was simulated by inserting zero-thickness cohesive elements. WebDiscrete element methods are relatively computationally intensive, which limits either the length of a simulation or the number of particles. Several DEM codes, as do molecular dynamics codes, take advantage of parallel processing capabilities (shared or distributed systems) to scale up the number of particles or length of the simulation. eher synonyme

Considerations for Discrete Element Modeling of Rock Cutting

Discrete Element Modelling of Rock Cutting SpringerLink

WebDEM, for modeling rock cutting in a setting similar to that of an advancing drilling PDC bit, while a ... DISCRETE ELEMENT MODELING OF ROCKS To model a rock sample in DEM, in this study, circular WebSep 1, 2013 · Compared with other numerical modeling methods, the discrete element method (DEM) is a favorable candidate due to its advantages in efectively … folio antonymWebNov 1, 2024 · Based on the rock scratch test and the finite element model, the 2D discrete element rock cutting model is established in this paper. The model adopts spring … folio amtree

"WebTool-rock interaction processes can be classified as indentation or cutting depending on the direction of motion of the tool with respect to the rock surface. The modes of failure induced in the rock by an indenting or a cutting tool can be ductile and/or brittle. " - Discrete element modeling of rock cutting

Discrete element modeling of rock cutting

Discrete Element Modeling of the Effects of Cutting Parameters …

WebAug 21, 2024 · The discrete-element method (DEM) is a particle-based numerical method that can model a system’s mechanical behaviour composed of an assembly of discrete … WebSep 1, 2011 · Design and Optimization of Tunnel Boring Machines by Simulating the Cutting Rock Process using the Discrete Element Method. Roberto C. Medel-Morales, S. Botello-Rionda. Engineering. 2013. Nowadays there is a large number of tunneling projects in progress, mainly in Europe, both for roads and transport supplies.

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WebMar 5, 2015 · It is well accepted that there is a transition of failure mode from ductile to brittle with increasing depth of cut during rock cutting process. Rock failure modes affect cutting efficiency, and knowledge of the failure transition is essential to the determination of optimum cutting parameters.

WebNov 19, 2024 · Abstract. For a long time, geomechanicians have used scratch tests to characterize the compressive behavior and hardness of rocks. In recent years, this test has regained popularity in the field of mechanics, especially after a series of publications that highlighted the potential capability of the scratch test to determine the fracture properties … WebThe paper deals with a numerical analysis of rock cutting experiments using the discrete element method. The main objective of this research is to establish if the occurence of …

WebApr 15, 2014 · The numerical model of the tool-rock system allowing us to simulate a process of rock cutting as coupled thermomechanical problem has been developed within the framework of the discrete element method (DEM) employing spherical (in 3D) or cylindrical (in 2D) particles. WebSep 1, 2011 · The discrete element model of rock cutting is capable to represent correctly complexity of a rock cutting process. Quite a good qualitative and quantitative …

WebSep 15, 2004 · This paper deals with the numerical simulation of rock cutting laboratory tests using the discrete element method. The main objective is to provide a method for calibrating numerical DEM models of… Expand PDF Lattice Discrete Particle Modeling of Size Effect in Slab Scratch Tests Lina Han, M. Pathirage, A. Akono, G. Cusatis Physics …

WebThis study attempts to build a framework within the Discrete Element Method (DEM) to produce a reliable predictive tool in rock cutting applications, such that the cutting forces and fragmentation process are reasonably estimated. The study is limited to shallow depth cutting, often the mode of cutting involved in drilling operations. folio apartmentshomesWebApr 19, 2024 · Cutting Force (kN) D&B: Drill and Blast: DE: Discrete Element: DEM: Discrete Element Method: DoC: Depth of Cut (mm) E: Macroscopic Young’s Modulus … folio annual planWebFeb 8, 2024 · 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. The built-in parallel bond model (PBM) can better simulate the force transfer, damage accumulation and fracture of rock materials. folio analyse interviewsWebSep 15, 2015 · The Discrete Element Method is used successfully to simulate the rock cutting process of dry rock for various applications. In this paper, the authors extend DEM with a fully coupled... folio apartments 78758WebSep 1, 2011 · Discrete/Finite Element Modelling of Rock Cutting with a TBM Disc Cutter C. Labra, J. Rojek, E. Oñate Engineering Rock Mechanics and Rock Engineering 2016 … ehesp bibliographieWebJul 17, 2008 · The discrete element method (DEM) is widely recognized as a suitable tool to model geomaterials [ 1, 2, 4, 8 ]. The method presents important advantages in simulation of strong discontinuities such as rock fracturing during an underground excavation or rock failure induced by a tunnel excavation. folio apartments mapWebJul 24, 2024 · To investigate the influence mechanism of those factors on rock fragmentation, a series of linear cutting numerical tests were conducted using the … folio apartments austin texas