... discrete element method to simulate a large-scale direct shear process. The approach analyzes the evolution of macroscopic and microscopic mechanical properties at the geogrid-soil interface, specifically tracking particle contact states, distribution states and particle movements under varying shear...

...Yang Yang; Yinghui Tian; Runyu Yang; Chunhui Zhang; Le Wang Purpose The objective of this paper is to quantitatively assess shear band evolution by using two-dimensional discrete element method (DEM). Design/methodology/approach The DEM model was first calibrated by retrospectively modelling...

... © Emerald Publishing Limited 2020 Emerald Publishing Limited Licensed re-use rights only Porous media Lattice Boltzmann method Permeability Discrete element method Compacted spheres Pore-scale modelling Solid-fluid interaction κ = Permeability [m²]; Re...

... screen, a three-dimensional numerical model was developed to simulate the screening process. Design/methodology/approach The discrete element method (DEM) was used to perform the numerical simulation, and the kinetic model of the swing screening was established. The regions of stratification...

... mechanical properties of granular materials and/or integrated into the frame of the second-order computational homogenization method with a nested finite element method-discrete element method solution procedure for granular materials. It will tend to provide, at least theoretically, more reasonable results...

.... The contact force is perpendicular to the area of the circular contact surface whose radius is: (3) r c = 1 2 δ n R * . © Emerald Publishing Limited 2018 Emerald Publishing Limited Licensed re-use rights only Discrete element method Dynamic coupled contact model...

...Boning Zhang; Richard Regueiro; Andrew Druckrey; Khalid Alshibli Purpose This paper aims to construct smooth poly-ellipsoid shapes from synchrotron microcomputed tomography (SMT) images on sand and to develop a new discrete element method (DEM) contact detection algorithm. Design/methodology...

...Qingxiang Meng; Huanling Wang; Weiya Xu; Qiang Zhang Purpose This paper aims to present a digital image processing (DIP)-based discrete element method (DEM) for the analysis of heterogeneous geomaterials. Taking a soil and rock mixture as an example, the direct shear test is used to illustrate...

... volume from equipment surfaces is beneficial for efficient maintenance of worn equipment. Recently, the discrete element method (DEM) simulations have been utilised to predict the wear by bulk-solids. However, the sensitivity of wear prediction subjected to DEM parameters has not been systemically...

... Discrete element method Particle coupling Sphere-cube intersection Figure 3. In sub-division sampling, symbols represent sampling points inside (+) and outside of the sphere (×) where x is the sphere center. If s is found to be imaginary, then no intersection exists...

... (µ_r) and sliding (µ_s), are numerically determined in two different ways: with and without considering the fluid effect. In an earlier study, the microscopic properties were determined by discrete element method (DEM) and without considering the air effect on the macroscopic...

... of the fine and coarse scale calculations in the BSM, the unsaturated porous Cosserat continuum model using the finite element method and the discrete element model using the discrete element method for granular media are combined. Findings – The numerical results for a 2D example problem of slope...

...Professor Y.T. Feng, Professor Xikui Li, Professor Yuanqiang Tan and Professor Shunying Ji; Yuanqiang Tan; Rong Deng; Y T Feng; Hao Zhang; Shengqiang Jiang Purpose – The purpose of this paper is to establish a new two-phase Discrete Element Method (DEM) model to investigate the movement of fresh...

... and discrete element method (DEM)-based simulations. Findings – The soil-tool interaction induced free vibrations of cultivator tools have significant impact on the measured draught force, and the simulations made by using vibrating tools give similar results. Research limitations/implications...

... sliding friction, gravitational forces, and oblique impacts, based on the modified discrete element method. In this process, a suitable particle damper system is modeled, reaction forces between particle aggregates and the primary structure are incorporated, a reasonable contact force model and time step...

...Y.T. Feng; Ba Danh Le; Georg Koval; Cyrille Chazallon Purpose The purpose of this paper is to use the discrete element method (DEM) to model the fracture behaviour of brittle materials in 2D. Design/methodology/approach The material consists of a set of particles in contact with a close‐packed...

... particle medias, welded or non‐welded, in order to study them as if they were continuous. D. del Olmo can be contacted at: dolmo@incisaingenieria.com © Emerald Group Publishing Limited 2013 Stress (materials) Torque Deformation Granular materials Discrete element method Finite element...

... Modelling Smoothed particle hydrodynamics Discrete element method Geophysical flows Industrial flows Biophysical flows The flow of particulates and fluids is critical to many applications. Examples include human processes such as eating and swimming, extreme geophysical flows such as tsunamis...

... to represent the fines as a continuum, and it is coupled to the discrete element method (DEM) which is used to represent large blocks. The issues relevant to this approach, such as fluid‐solid interaction, the synchronisation of explicit schemes, and the characterisation of a bulk material as a non‐Newtonian...

...C.R. Leonardi; D.R.J. Owen; Y.T. Feng Purpose The purpose of this paper is to present a novel computational framework based on the lattice Boltzmann method (LBM) and discrete element method (DEM) capable of simulating fines migration in three dimensions. Fines migration occurs in a block cave mine...