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Acoustical properties of double porosity granular materials [PDF]

open access: yesThe Journal of the Acoustical Society of America, 2011
Granular materials have been conventionally used for acoustic treatment due to their sound absorptive and sound insulating properties. An emerging field is the study of the acoustical properties of multiscale porous materials. An example of these is a granular material in which the particles are porous.
Venegas, R, Umnova, O
openaire   +5 more sources

Sedimentation–consolidation of a double porosity material [PDF]

open access: yesComputers and Geotechnics, 2007
This paper studies the sedimentation-consolidation of a double porosity material, such as lumpy clay. Large displacements and finite strains are accounted for in a multidimensional setting. Fundamental equations are derived using a phenomenological approach and non-equilibrium thermodynamics, as set out by Coussy [Coussy, Poromechanics, Wiley ...
Wong, Henry   +3 more
openaire   +8 more sources

Discrete double-porosity models for spin systems [PDF]

open access: yesMathematics and Mechanics of Complex Systems, 2016
arXiv admin note: text overlap with arXiv:1406 ...
Braides A., Chiadò Piat V., Solci M.
openaire   +4 more sources

Influence of nonlocal on a rotating thermoelastic medium with diffusion and double porosity [PDF]

open access: yesScientific Reports
In this paper, we have studied the thermodynamical interactions in a two-dimensional thermoelastic diffusion in homogeneous isotropic medium with nonlocal, rotation and double porosity in the context of Green–Lindsay theory. A thermal load was applied to
Doaa M. Salah   +2 more
doaj   +2 more sources

Non-simple elastic materials with double porosity structure

open access: yesArchives of Mechanics, 2022
This paper is concerned with a strain gradient theory of elastic materials that have a double porosity structure. Firstly, we present the basic equations and the boundary conditions of the nonlinear theory.
S. De Cicco
doaj   +1 more source

The theory of generalized micropolar thermoelastic diffusion with double porosity [PDF]

open access: yesTheoretical and Applied Mechanics, 2022
The main purpose of the paper is to derive the constitutive relations and field equations for anisotropic micropolar thermoelastic medium with mass diffusion and double porosity.
Kansal Tarun
doaj   +1 more source

Microstructure and Pore Characteristics of a SUS316L Gas Filter Fabricated by Wet Powder Spraying [PDF]

open access: yesArchives of Metallurgy and Materials, 2022
In this study, a flake-shaped metal powder was coated on a tube shaped pre-sintered 316L stainless steel support using a wet powder spraying process to fabricate a double pore structure, and the pore characteristics were analyzed according to coating ...
Min-Jeong Lee   +5 more
doaj   +1 more source

SPH Simulation of Interior and Exterior Flow Field Characteristics of Porous Media [PDF]

open access: yes, 2020
At the present time, one of the most relevant challenges in marine and ocean engineering and practice is the development of a mathematical modeling that can accurately replicate the interaction of water waves with porous coastal structures. Over the last
Gui, Qinqin   +2 more
core   +2 more sources

Boundary value problems of steady vibrations in the theory of thermoelasticity for materials with a double porosity structure

open access: yesArchives of Mechanics, 2017
The purpose of the present paper is to develop the classical potential method in the linear theory of thermoelasticity for materials with a double porosity structure based on the mechanics of materials with voids.
M. Svanadze
doaj   +1 more source

Nonlinear “double porosity” type model

open access: yesComptes Rendus. Mathématique, 2002
We consider a variational problem inf u∈H 1 (Ω) ∫ Ω {a ϵ |∇u ϵ | m +g|u ϵ | m - mf ϵ u ϵ }dx in a bounded domain Ω=ℱ (ϵ) ∪ℳ ¯ (ϵ) with a microstructure ℱ (ϵ) which is not in general periodic; aε=aε(x) is of order 1 in ℱ (ϵ) and sup x∈ℳ (ϵ) a ϵ (x)→0 as ε→0. A homogenized model is constructed.
Pankratov, Leonid, Piatnitski, Andrey
openaire   +2 more sources

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