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The paper deals with homogenisation problems for high-contrast symmetric convolution-type operators with integrable kernels in media with a periodic microstructure. We adapt the two-scale convergence method to nonlocal convolution-type…

偏微分方程分析 · 数学 2025-07-04 Mikhail Cherdantsev , Andrey Piatnitski , Igor Velcic

For two-scale homogenization of a general class of asymptotically degenerating %uniformly strongly elliptic symmetric PDE systems with a critically scaled high contrast in periodic coefficients of a small period $\varepsilon$, we derive a…

偏微分方程分析 · 数学 2017-11-27 I. V. Kamotski , V. P. Smyshlyaev

A two phase elastic composite with weakly compressible elastic inclusions is considered. The homogenised two-scale limit problem is found, via a version of the method of two-scale convergence, and analysed. The microscopic part of the…

数学物理 · 物理学 2013-04-29 Shane Cooper

Averaging certain class of quasiperiodic monotone operators can be simplified to the periodic homogenization setting by mapping the original quasiperiodic structure onto a periodic structure in a higher dimensional space using cut-and…

偏微分方程分析 · 数学 2023-06-21 Niklas Wellander , Sebastien Guenneau , Elena Cherkaev

We are interested in the homogenization of elastic-electric coupling equation, with rapidly oscillating coefficients, in periodically perforated piezoelectric body. We justify the two first terms in the usual asymptotic development of the…

数值分析 · 数学 2007-09-10 Mechkour Houari

The spectral problem for an infinite periodic medium perturbed by a compact defect is considered. For a high contrast small $\ve$-size periodicity and a finite size defect we consider the critical $\ve^2$-scaling for the contrast. We employ…

谱理论 · 数学 2018-01-11 I. V. Kamotski , V. P. Smyshlyaev

The paper deals with homogenization of a model problem describing an immiscible compressible two-phase flow in random statistically homogeneous porous media. We derive the effective (macroscopic) problem and prove the convergence of…

偏微分方程分析 · 数学 2020-10-13 Brahim Amaziane , Leonid Pankratov , Andrey Piatnitski

We derive exact expressions for effective elastodynamic properties of two-phase composites in the long-wavelength (quasistatic) regime via homogenized constitutive relations that are local in space. This is accomplished by extending the…

材料科学 · 物理学 2021-01-01 J. Kim , S. Torquato

The aim of the paper is to introduce an alternative notion of two-scale convergence which gives a more natural modeling approach to the homogenization of partial differential equations with periodically oscillating coefficients: while…

偏微分方程分析 · 数学 2016-07-20 François Alouges , Giovanni Di Fratta

The two-scale computational homogenization method is proposed for modelling of locally periodic fluid-saturated media subjected a to large deformation induced by quasistatic loading. The periodic heterogeneities are relevant to the…

数值分析 · 数学 2022-02-11 Vladimír Lukeš , Eduard Rohan

The introduced notion of locally-periodic two-scale convergence allows to average a wider range of microstructures, compared to the periodic one. The compactness theorem for the locally-periodic two-scale convergence and the…

偏微分方程分析 · 数学 2012-09-19 Mariya Ptashnyk

The paper addresses the homogenization of a micro-model of poroelasticity coupled with thermal effects for two-constituent media and with imperfect interfacial contact.The homogenized model is obtained by means of the two-scale convergence…

偏微分方程分析 · 数学 2021-12-07 Abdelhamid Ainouz

For microscale heterogeneous PDEs, this article further develops novel theory and methodology for their macroscale mathematical/asymptotic homogenization. This article specifically encompasses the case of quasi-periodic heterogeneity with…

偏微分方程分析 · 数学 2022-09-08 A. J. Roberts

Homogenization of a spectral problem in a bounded domain with a high contrast in both stiffness and density is considered. For a special critical scaling, two-scale asymptotic expansions for eigenvalues and eigenfunctions are constructed.…

谱理论 · 数学 2007-11-16 Natalia O. Babych , Ilia V. Kamotski , Valery P. Smyshlyaev

Quasiperiodic arrangements of the constitutive materials in composites result in effective properties with very unusual electromagnetic and elastic properties. The paper discusses the cut-and-projection method that is used to characterize…

偏微分方程分析 · 数学 2019-11-12 Niklas Wellander , Sébastien Guenneau , Elena Cherkaev

Using a suitable stochastic version of the compactness argument of [V. V. Zhikov, 2000. On an extension of the method of two-scale convergence and its applications. Sb. Math., 191(7--8), 973--1014], we develop a probabilistic framework for…

数学物理 · 物理学 2017-12-11 Mikhail Cherdantsev , Kirill Cherednichenko , Igor Velčić

In a companion paper, equations for partially molten media were derived using two-scale homogenization theory. One advantage of homogenization is that material properties, such as permeability and viscosity, readily emerge. A caveat is that…

地球物理 · 物理学 2015-05-13 Gideon Simpson , Marc Spiegelman , Michael I. Weinstein

We consider the scattering of elastic waves by highly oscillating anisotropic periodic media with bounded support. Applying the two-scale homogenization, we first obtain a constant coefficient second-order partial differential elliptic…

偏微分方程分析 · 数学 2018-02-06 Yi-Hsuan Lin , Shixu Meng

This paper is devoted to the study of the stochastic-periodic homogenization of Poisson-Nernst-Planck equations in porous media. It is shown by the stochastic two-scale convergence method extended to periodic surfaces that results in a…

偏微分方程分析 · 数学 2024-08-26 Franck Tchinda , Joel Fotso Tachago , Joseph Dongho , Fridolin Tchangnwa Nya

This work is devoted to the homogenization of elliptic equations in high-contrast media in the so-called 'double-porosity' resonant regime, for which we solve two open problems of the literature. First, we prove qualitative stochastic…

偏微分方程分析 · 数学 2025-04-07 Elise Bonhomme , Mitia Duerinckx , Antoine Gloria
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