... displacement strength maccaferri innovation center particle figure 8 figure 6 tensile strength double-twisted hexagonal mesh engineering figure 2 Rock slope engineering 407_14263.indd 3399 23/08/19 4:53 PM 407_14263.indd 3400 23/08/19 4:53 PM Rock Mechanics for Natural Resources and Infrastructure...

... Abstract This paper presents a novel 3D clumped particle method for more realistic simulation of rocks with high unconfined compressive strength to tensile strength ratio (UCS/TS) and nonlinear strength envelope. The proposed method imitates the growth process of mineral particles to prepare...

... solution to evaluate the accuracy of various hydraulic fracturing simulators. structural geology proppant upstream oil & gas fracturing fluid fracture characterization complex reservoir fracture subsurface storage hydraulic fracturing reservoir characterization regime particle...

... Abstract Mechanism of slot-shaped borehole breakouts observed in experiments of drilling through high-porosity sandstone is investigated using DEM-continuum mechanics coupled modeling approach. The rock in DEM is modeled as an assembly of particles with flat joints at contacts. The failure...

... Abstract The paper focuses on the hydro-mechanical modelling of single phase fluid flow in a deformable saturated porous media using coupled Smoothed Particle Hydrodynamics (SPH) and Peridynamics (PD) numerical methods. Rock matrix is modeled using SPH particles and PD procedures are applied...

... of solid particles and rock fragments into the interior of the well. As a result, petroleum production decreases, equipment can be damaged, and the well can become structurally unstable. Different methods can be used to predict solids production rate. They can be based on field observations, laboratory...

.... avalanche application diameter breakage reservoir characterization propagation particle equation avalanch gsd deposit approximation mechanism pastor upstream oil & gas landslide hungr friction smoothed particle hydrodynamic mcdougall hatano Rock Mechanics for Natural Resources...

... mechanic particle cundall itasca consulting group numerical modeling underestimation rock strength device discrete element method Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4 3D numerical modeling...

... discontinuities, and shear tests on structure planes are unrepeatable. upstream oil & gas particle shear strength shear characteristic zhejiang province characteristic protrusion plane specimen reservoir simulation displacement vector engineering particle displacement vector microcrack...

.... Consequently, the static fields appear in the relationship between couple-stress and gradient of rotation, such action introduces implicitly the dimensions and shape of the particles in constitutive relations, which allows considering effects of the microstructure in behavior of field. In the generalized...

... Abstract Based on the Discrete Element Method (DEM), a three-dimensional particle flow code (PFC3D) was used to simulate the penetration process of the large-diameter steel cylinder in sandy soil. The magnitude and variation of sliding friction inside and outside steel cylinder were studied...

... Abstract When the discrete element method (DEM) is uded to simulate split Hopkinson pressure bar (SHPB), the comparison between results of numerical SHPB simulation and laboratory SHPB testing shows the strain rate effect of the rock specimen made by bonded-particle model is not obvious...

... Abstract Six numerical calculation models with different charge diameter were established by the soft of Ansys to analyse explosive pressure and shock attenuation laws. The results show that the peak displacement of particles obeyed the exponential attenuation law, the quantitative...

... electron microscopy (SEM). Fractal dimension values of corresponding SEM images were calculated through digital image processing technique and fractal geometric method. Numerical tests were carried out using Particle Flow Code PFC2D, whose tension-shear stress conditions were the same as the indoor tension...

... investigation particle Rock Mechanics for Natural Resources and Infrastructure Development Fontoura, Rocca & Pavón Mendoza (Eds) © 2020 ISRM, ISBN 978-0-367-42284-4 Experimental study of the shear behaviour of a rough discontinuity infilled by different minerals M. Jeffery, S. Fityus, J. Delahunty...

... changes in a time span that can range from thousands of years to a few months. reservoir characterization evaluation procedure madeira rosa particle olho degradation resistance laboratory rock mechanic variation figure 4 janeiro strength durability madeira branca brasileiro...

... recorded the strain energy of each particle and the number of cracks at different time steps. The results show that the energy entropy increases with the increase in the number of cracks. Thus, the change in energy entropy can be used to predict crack propagation. 1 Introduction Rock deformation...

... tackled is shown in the paper. Numerical methods to handle the coupled problems keep on evolving. In addition to FEM, discrete methods such as DEM, DDA etc. have been utilized to interpret complex natural rock mass behavior. Recent new development for fluid modeling is so called particle methods (MPS...

... characterisation (Xu et al., 2008). In mining, size and shape distributions of rock fragments determines the performance of blasting and influence the sequence whole mining production (Sereshki et al., 2016). In quarry production, size, shape and texture of rock particles must fit the requirements of customers...

... special in the upstream shoulder. specimen alterability resistance compactness river guadalajara quarry reservoir characterization tajo hydrographic confederation laboratory dolomite spain upstream oil & gas particle construction alcorlo dam porosity cedex fragmentation x-ray...