... ABSTRACT: Precise estimation of field variable values around a cavity is vital for excavation operation safety. The singular nature of stress around the cavity makes the computations challenging for Finite Element Method (FEM) software. Although the Boundary Element Method (BEM) offers a semi...

..., such as the fracture geometries and their propagation behaviors. In this study, a numerical model, in the framework of linear elastic fracture mechanics (LEFM) and combing the dual boundary element method (DBEM) and the finite volume method (FVM), is developed to study the hydraulic fracture initiation and propagation...

... Characterization equation of state reservoir geomechanics Upstream Oil & Gas Artificial Intelligence geothermal reservoir multiplication pore pressure matrix-vector multiplication displacement discontinuity method fundamental solution boundary element method fluid modeling hydraulic fracturing...

... and a fracture during an injection period. The single and multiple fracture propagation caused by transient cooling are numerically modeled using the 2D boundary element method. First, we show the stress and temperature distributions on and near a single crack in an elastic domain to demonstrate the effect...

... discontinuity boundary element method penny-shaped crack traction three-dimensional boundary element modeling analytical soln displacement discontinuity integral equation triangular element approximation vector representation integration equation ARMA 12-450 Three-dimensional Boundary Element...

... that excavation of the slot diverts high stresses away from the main shaft through stress redistribution. reservoir geomechanics displacement discontinuity method boundary element method Artificial Intelligence Engineer shaft pillar Reservoir Characterization yacoub geometry destress slot shaft...

... metals & mining Upstream Oil & Gas information Artificial Intelligence EDDM reservoir geomechanics strength failure criterion enhanced displacement discontinuity method pillar displacement discontinuity method excavation formulation boundary element method Orebody equation...

... carried out. In this report, such experimental and numerical results are presented. INVESTIGATIONS PREVIOUS LY MADE Previously, the authors carried out numerical computations by using boundary element method in two dimension and laboratory experiment by using small scale specimen of mortar. The results...

...-like geometries. The present method effectively combines the displacement discontinuity method with the standard boundary element method through a boundary integral equation formulation, and hence eliminates the inherent difficulty with the application of the direct boundary integral method to crack...

...Rock Mechanics as a Multtdtsciplinary Science, Roegiers (ed ) ¸ 1991 Balkema, Rotterdam. ISBN90 6191 194 X Mining applications of an elastodynamic boundary element method M.G. Mack Dowell Schlumberger Incorporated, Tulsa, Okla. S. L. Crouch Department of Civil Engineering, University of Minnesota...

... stability surface force initial stress Wellbore Design relation Continuum physical model boundary element method green function equation Rock Mechanics as a Multidisciplinary Science, Roegiers (ed ) ¸ 1991 Balkerna, Rotterdam. ISBN906191 194X On a coupling of physical and mathematical modelling...

... Upstream Oil & Gas discontinuity application major discontinuity structural discontinuity vector BEM metals & mining discontinuity element boundary element method non-homogeneous material Displacement Discontinuity Element excavation formulation case study farahmand...

... Drillstem Testing aperture hydraulic conductivity procedure finite element boundary element analysis finite element rock fissure regime boundary element method fissure equation ABSTRACT 1 ABSTRACT A direct solution procedure is formulated capable of coupling finite element and boundary...

... subject to boundary conditions that reflect the interaction with the remainder of the system. These analyses required of the order of 400-800 solid finite elements. Models of longwall systems have used 5000-8000 elements (Van Dillen, 1980). In recent years integral equation or 'boundary element' methods...

.... A computational model has been developed, on which to conduct studies of a jointed and fractured rock mass. It involves coupling a deformable block version of the Distinct Element Method and the Boundary Element Method, in order to analyze the mechanical response of such a medium. It exploits the assumption...

... & Gas underground excavation analysis boundary element method formulation Chapter 72 A HYBRID QUADRATIC ISOPARAMETRIC FINITE ELEMENT-BOUNDARY ELEMENT CODE FOR UNDERGROUND EXCAVATION ANALYSIS by Denis Yeung and B.H.G. Brady Graduate Student, Dept. of Civil and Mineral Engineering University...

...Chapter 73 BOUNDARY ELEMENT METHODS FOR VISCOELASTIC M DIA by Wang Yongjia (1) and Steven L. Crouch (2) (1) Graduate Student, Department of Civil and Mineral Engineering University of Minnesota, and Associate Professor Department of Mining Engineering, Northeast Institute of Technology People's...

... mixed-mode crack test result mixed-mode fracture initiation University stress intensity factor specimen limestone kic value hydraulic fracturing crack length mixed-mode test Indiana limestone Schmidt Westerly granite boundary element method Ingraffea propagation MIXED-MODE...

...A BOUNDARY ELEMENT METHOD OF STRESS ANALYSIS FOR NON-HOMOGENEOUS M DIA ND COMPLETE PLANE STRAIN by B.H.G. Brady, Imperial College of Science and Technology This paper was presented at the 20th U.S. Symposium on Rock Mechanics, held in Austin, Texas, June 4-6, 1979. The material is subject...

... of a particular segment, as illustrated in Figure 2(b). The objective then is 432 B.H.G. Brady 3 A Boundary Element Method for Three-Dimensional Elastic Analysis of Tabular Orebody Extraction to distribute singularities over all segments such that Oz,Tyz,TZX are zero over all boundary elements, and it is assumed...