Granular Matter
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Random generation of 2D geometry-controlled particles via the epicycle series
Granular Matter - Tập 22 - Trang 1-17 - 2020
The discrete element method (DEM) represents a classical and popular research
approach to exploring the particle shape effects of granular materials. For many
modellers, the acquisition of irregular particle outlines is a problem of
considerable practical importance. To mitigate this problem, a novel method
based on epicycle series is introduced in this study, and it can produce
geometry-controlle...
Rolling resistance of a spherical pod on a granular bed
Granular Matter - Tập 19 - Trang 1-10 - 2017
The motion of a spherical ball rolling without slipping or plowing on a granular
bed is studied. We propose a definition of the rolling resistance force and
torque, and carry out experiments with a basketball and medicine ball rolling on
a bed of gravel to measure the corresponding rolling resistance coefficients.
These experiments reveal, in good agreement with literature, coefficients that
are v...
Particulate modeling of cementation effects on small and large strain behaviors in granular material
Granular Matter - Tập 19 Số 1 - 2017
Microdynamic analysis of solid flow in a shear cell
Granular Matter - Tập 14 - Trang 411-421 - 2012
Granular flow in a model shear cell under conditions relevant to those in an
annular cell is investigated based on the results obtained by means of the
discrete element method. The spatial and statistical distributions of
microdynamic variables such as velocity, porosity, coordination number and
contact force are established, and the dependence of these variables on some key
physical and operation...
Analytical solution of the $$\mu (I)-$$ rheology for fully developed granular flows in simple configurations
Granular Matter - Tập 15 - Trang 881-891 - 2013
Using the $$\mu (I)$$ continuum model recently proposed for dense granular
flows, we study theoretically steady and fully developed granular flows in two
configurations: a plane shear cell and a channel made of two parallel plates
(Poiseuille configuration). In such a description, the granular medium behaves
like a fluid whose viscosity is a function of the inertia. In the shear plane
geometry our...
Stick-slip behaviours of dry glass beads in triaxial compression
Granular Matter - Tập 19 Số 1 - 2017
A comprehensive approach for mesoscale discrete element modelling of mechanical and fracture behavior of concrete
Granular Matter - Tập 21 - Trang 1-19 - 2018
This paper describes a comprehensive approach for modelling mechanical and
fracture behavior of concrete using discrete element method. Concrete is
modelled at mesoscale as three phase material composed of aggregates, mortar and
interface. Full aggregate grading curve is considered. A systematic approach has
been used in this study to determine DEM micro parameters for each phase of
concrete. The ...
DEM of triaxial tests on crushable cemented sand
Granular Matter - Tập 16 - Trang 563-572 - 2014
Using the discrete element method, triaxial simulations of cemented sand
consisting of crushable particles are presented. The triaxial model used
features a flexible membrane, allowing realistic deformation to occur, and
cementation is modelled using inter-particle bonds. The effects of particle
crushing are explored, as is the influence of cementation on the behaviour of
the soil. An insight to t...
Laboratory investigation of dry granular flow through an opening
Granular Matter - - 2023
Granular flow is a scientific problem with applications in many engineering
problems such as sinkholes, ground surface collapse, and soil loss into a
defective pipe. In most previous studies, however, only single size grain has
been considered in mass flow rate calculations for simplicity. In nature, most
granular materials have different sizes of grains. It is believed that the grain
size distrib...
Effects of grain morphology on suffusion susceptibility of cohesionless soils
Granular Matter - Tập 23 Số 1 - 2021
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