Results 31 to 40 of about 119,165 (263)

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

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

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  

Jamming for a 2D granular material [PDF]

open access: yesSoft Matter, 2010
This paper focuses on the nature of jamming, as seen in two-dimensional frictional granular systems consisting of photoelastic particles. The photoelastic technique is unique at this time, in its capability to provide detailed particle-scale information on forces and kinematic quantities such as particle displacements and rotations.
Zhang, J   +3 more
openaire   +1 more source

Packing of Compressible Granular Materials [PDF]

open access: yesPhysical Review Letters, 2000
4 pages, 7 figures, to appear in Phys.
Makse, Hernan A.   +2 more
openaire   +3 more sources

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

Micromechanics of Liquefaction in Granular Materials [PDF]

open access: yesPhysical Review Applied, 2018
A discrete element method (DEM) implementation is developed to study the micromechanics of liquefaction in granular materials. In a liquefaction event, the pore water acts as a cushion between the grains, reducing the contact and friction forces and the overall soil strength.
Galindo-Torres, S. A.   +2 more
openaire   +4 more sources

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

Therapeutic Apheresis in Nigeria: A Multi‐Center Summary of Abstracts From the Inaugural Nigerian Society for Apheresis Scientific Meeting

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Therapeutic apheresis (TA) is an established treatment modality for hematologic, neurologic, and immunologic disorders, yet access remains severely limited in sub‐Saharan Africa. Donor apheresis, including platelet apheresis collection from healthy donors, represents an important complementary modality supporting blood product ...
Nosa Bazuaye   +33 more
wiley   +1 more source

Numerical simulation of cementitious granular materials

open access: yesScience and Engineering of Composite Materials, 2012
A new numerical approach was developed to study the mechanical properties of cementitious granular materials. At first, an ellipsoid based method was developed to generate aggregate particles of arbitrary shape.
Yang Wei Guo   +2 more
doaj   +1 more source

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