In this work, we demonstrate that the rapid developments of methods of discontinua, when coupled with virtual experimentation and complementary discontinua based experimental and theoretical methods, are resulting in a ...

The finite element method (FEM) and the discrete element method (DEM) are leading strategies for numerical solution of engineering problems of solid phase. Both are applicable in different situations and sometimes can be ...

In this work, by means of numerical experiments based on Los Alamos National Laboratory’s combined finite discrete element method (FDEM) software package MUNROU, it is demonstrated that fracture patterns do not only depend ...

Entrained air (ejection process) by flow of freely falling particles of the bulk material is considered by us from the position of the classical laws of dynamics of twocomponent streams "particulate matter - the air." The ...

We investigate the effect of an ambient fluid on the dynamics of collapse and spread of a granular column simulated by means of a recently developed model which takes into account both fluid forces that act on each grain and ...

For the proper simulation of processes inside microfluidic devices, proper model for blood flow must be used. We use the lattice-Boltzmann method for the blood plasma flow and the immersed boundary method for the description ...

First rheological investigation results of weakly wet granular media are presented. The materials have been examined experimentally and numerically in welldefined shear configurations in steady state, in the intermediate flow ...

The evolution of shear zones in initially medium dense cohesionless sand for quasistatic earth pressure problems of a retaining wall was analysed with a 3D discrete element method DEM using spheres with contact moments. ...

A framework to couple the Finite and the Discrete element methods is proposed in this study. The framework takes advantage of both approaches to investigate different soilstructure interaction problems. The structural ...

In this study, the behaviour of iron ore fines with varying levels of adhesion was investigated using a confined compression test and a uniaxial test. The uniaxial test was conducted using the semi-automated uniaxial EPT ...

Modelling of railway ballast response using Discrete Element Method with polyhedral shape of grains is presented. The convex polyhedrons are generated pseudorandomly via Voronoi tessellation. Inter-particle contact is based ...

The behavior of granular materials (e.g. soils) strongly depends on the interactions between particles at the grain scale. In addition, in multiphase systems, the presence of water and interfaces between different phases ...

This paper presents a discrete modelling approach which allows the simulation of rockfalls behind drapery systems. The falling rock is represented by a rigid assembly of spheres whereas the slope is represented by triangular ...

The flow behaviour of granular materials is relevant for many industrial applications including the pharmaceutical, chemical, consumer goods and food industries. A key issue is the accurate characterisation of these powders ...

The flow behaviour of very dense particle regimes such as in a moving or fluidized bed is highly dependent on the inter-particle friction, which can be characterized by the coefficient of friction. Since only rough guide values ...

Many researchers have investigated the flow and segregation behaviour in model scale experimental silos at normal gravity conditions. However it is known that the stresses experienced by the bulk solid in industrial silos ...

The accurate determination of the microparameters needed in a Discrete Element Method (DEM) simulation is essential to obtain reliable results. In this work the DEM model parameters sensitivity in three different laboratory ...

As a Lagrangian particle method, smoothed particle hydrodynamics (SPH) has been applied into the problems of fluid-structure interaction (FSI) more and more. However, the transient fluid-structure interactions characterized ...

Smoothed particle hydrodynamics (SPH) is a meshfree, Lagrangian particle method, which has been applied to different areas in sciences and industrial applications. In this work, SPH is used to simulate the soil–water jet ...

We present PPML, a domain-specific programming language for parallel particle and particle-mesh simulations. PPML provides a concise set of high-level abstractions for particle methods that significantly reduce implementation ...

The paper presents a novel hybrid approach developed to improve the resolution of concentrated vortices in computational fluid mechanics. The method is based on combination of a grid based and the grid free computational ...

The Lagrangian Material Point Method (MPM) [1, 2] has been implemented into the Eulerian shock physics code CTH[3], at Sandia National Laboratories. Since the MPM uses a background grid to calculate gradients, the method ...

In a wide spectrum of geotechnical applications, materials undergo large deformations and/or large displacements. On modeling these problems with a Lagrangian finite element method, the mesh can become too distorted and ...

The creation of dynamic replacement stone columns is a poorly understood process that is difficult to model numerically due to very large displacements and the complex interactions between the soil and the forming stone ...

Large-scale tsunami occurs every 100 or 150 years statistically, and 95% of these tsunami lead to great disasters which kill over 1,000 people. In order to avoid, suppress or mitigate such damage, it is necessary to perform ...

Present work is focused on the investigation of soda-lime-silica glass. The material is completely amorphous, therefore a 3D random network generation was done to produce the initial geometry. The systems were verified ...

Cold spraying is a new coating technique that makes a thin layer on the solid surface of various mechanical components using tiny material particles. Differing from the conventional thermal spraying methods, there are some ...

The Discrete Element Method (DEM) is today a commonly used tool to simulate compaction of particulate media. The main issue when using DEM in compaction problems is the description of the contact between two powder particles. ...

The method of symbiotic cellular automaton, which combines two approaches to describe the simulated media – the method of conventional cellular automaton and method of movable cellular automaton, has been developed for ...

In this paper, in order to compute nonlinear dynamic responses of shell structures, formulations of the internal forces of the shell element in vector form intrinsic finite element (VFIFE) method are developed. This novel ...

For a realistic description of the mechanical behaviour of concrete, which is a strongly inhomogeneous and non-linear, microstructure should be taken into account. The size, volume and shape of aggregate have a pronounced ...

The work consists of the two parts: the experiment part and the calculation part. In the experiment part, the 30×10×10 (mm) duralumin bar is subjected to high-ratio compression using a laboratory machine. The experiment ...

We present the so-called Modified Finite Particle Method (MFPM), that is a recent methodology of approximation of differential operators, based on the projection of the Taylor series of a function u(x) on a set of projection ...

The uniaxial compression of polydisperse assemblies of spherical frictional and frictionless particles is modeled with the discrete element method (DEM). The normal particle size distribution with standard deviation of ...

In this paper, Discrete Least Squares meshless method (DLSM) is developed to analyze cracked structuresin an elastostatic problem. DLSMis a new really meshless method that does not use any mesh in computation. The method ...

Meshfree Finite point method (FPM) has been used for the solution of sound (noise) propagation, which can be modeled by linearized Euler equations (LEE). Important property of a numerical method for simulation of sound ...

In this study, a grid-free vortex method was developed and applied to turbulent flows in order to validate the scheme. In order to satisfy the boundary condition for internal flow calculation, the direct boundary element ...

A general approach to realization of models of elasticity, plasticity and fracture of heterogeneous materials within the framework of particle-based discrete element method is proposed in the paper. The approach is based ...

The connected physical-mechanical model of fluid-saturated porous medium, based on the coupling of particle method and net method, has been proposed. The model has been applied to simulation of the mechanical response of ...

In this paper, with focusing particular attention on a major issue — the lack of consistency conditions on the spatial discretization schemes of the existing MPS method, we develop a new meshfree particle method named Least ...

For the stable melting of the high temperature molten glass beyond 1200 degree Celsius, fluid motion and thermal energy balance due to the natural convection are the most important phenomena to control the state of the ...

We present an approach to model the process of freezing and melting of fluids including expansion of volume with the Finite Pointset Method (FPM). The model is based on defining a freezing range of temperatures in which phase ...

In this study, a method for modeling incompressible, immiscible two phase fluid flows influenced by an external electrical field in the context of incompressible smoothed particle hydrodynamics in two dimensions has been ...

Phase decomposition and phase separation play important roles in the preparation of precipitation membranes. Phase decomposition is a diffusion–controlled process on a short time scale. Phase separation is a convection–controlled ...

In this paper we present a particle number density variation on the standard smooth particle hydrodynamics (SPH) form of the heat conduction equation and show progress towards a the development of a robust equation of state ...