Results 31 to 40 of about 362,213 (302)

Interparticle Friction in Granular Ceramic Materials

open access: yesKONA Powder and Particle Journal, 2014
The frictional behaviour of dry ceramic materials in the form of spherical beads, sand and spray dried powders has been studied.
N. W. Page, M. Yousuff, C.J. Wauchope
doaj   +1 more source

Physical and Compaction Properties of Granular Materials with Artificial Grading behind the Particle Size Distributions

open access: yesAdvances in Materials Science and Engineering, 2018
Granular materials in geotechnical engineering is generally considered to be mixtures of clay, sand, and gravel that commonly appear in slopes, valleys, or river beds, and they are especially used for the construction of earth-rock-filled dams.
Ming-liang Chen   +4 more
doaj   +1 more source

Viscoelasticity of granular materials

open access: yesMechanics of Materials, 1995
Abstract In a former work (V.T. Granik and M. Ferrari (1993), Microstructural mechanics of granular media, Mech. Mater. 15, 301–322) a micromechanical theory for elastic granular media was deduced on the basis of the identification of the constituent grains with the nodes of a Bravais lattice.
Maddalena F., Ferrari M.
openaire   +2 more sources

Effects of Moving Side Walls on Confined Granular Packings [PDF]

open access: yesMehran University Research Journal of Engineering and Technology, 2011
Granular materials have numerous industrial and geophysical applications. However, many phenomenon exhibited by granular media are not yet fully explained.
Ram Chand   +2 more
doaj  

Microstructural anisotropy as the origin of dilatancy [PDF]

open access: yesEPJ Web of Conferences
Dilation in sheared granular materials has been widely observed, yet its micromechanical origins remain debated. Using discrete element method (DEM) simulations of slow granular flows, we find that grain rearrangements occur intermittently, alternating ...
Gautam Ravi, Nott Prabhu R.
doaj   +1 more source

Two-phase densification of cohesive granular aggregates [PDF]

open access: yes, 2001
When poured into a container, cohesive granular materials form low-density, open granular aggregates. If pressed upon with a ram, these aggregates densify by particle rearrangement.
A. M. Cuitiño   +22 more
core   +3 more sources

Remarks on Constitutive Modeling of Granular Materials

open access: yesEng, 2023
In this paper, we provide a brief overview of certain fundamental concepts which can be used to derive constitutive relations for the stress tensor of granular materials. These include concepts such as dilatancy, cohesion, yield criterion, shear banding,
Mehrdad Massoudi
doaj   +1 more source

Coupling between rotational and translational motions of a vibrated polygonal disk

open access: yesNew Journal of Physics, 2020
We investigate experimentally the dynamics of a single polygonal disk (regular n -gon with 3 ⩽ n ⩽ 8) confined in a closed container under vertical vibrations against gravity.
Simeon Völkel, Kai Huang
doaj   +1 more source

Dynamic compaction of granular materials. [PDF]

open access: yesProc Math Phys Eng Sci, 2013
An Eulerian hyperbolic multiphase flow model for dynamic and irreversible compaction of granular materials is constructed. The reversible model is first constructed on the basis of the classical Hertz theory. The irreversible model is then derived in accordance with the following two basic principles.
Favrie N, Gavrilyuk S.
europepmc   +5 more sources

Jamming transition in emulsions and granular materials

open access: yes, 2005
We investigate the jamming transition in packings of emulsions and granular materials via molecular dynamics simulations. The emulsion model is composed of frictionless droplets interacting via nonlinear normal forces obtained using experimental data ...
C. F. Moukarzel   +11 more
core   +1 more source

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