On Modelling Nonlinear Phenomena in Deforming Heterogeneous Media using Homogenization and Sensitivity Analysis Concepts

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F49777513%3A23520%2F14%3A43923613" target="_blank" >RIV/49777513:23520/14:43923613 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

On Modelling Nonlinear Phenomena in Deforming Heterogeneous Media using Homogenization and Sensitivity Analysis Concepts

Popis výsledku v původním jazyce

This paper is concerned with modeling nonlinear effects in deforming porous fluid saturated media. The proposed modelling approaches are based on the homogenization of quasistatic fluid-structure interaction whereby the material derivative is consideredas a tool for linearisation. Assuming the linear kinematics framework for the first proposed model, the nonlinearity in the Biot continuum is introduced in terms of the material coefficients which are expressed as linear functions of the macroscopic response. These functions are obtained by the sensitivity analysis of the homogenized coefficients computed for a given geometry of the porous structure which transforms as a result of the local deformation. The second model is derived in the framework of the Eulerian formulation allowing for the large deformation kinematics. The proposed sensitivity analysis approach to handle deformation-dependent material coefficients avoids solving local microscopic problems for updated configurations. I

Název v anglickém jazyce

On Modelling Nonlinear Phenomena in Deforming Heterogeneous Media using Homogenization and Sensitivity Analysis Concepts

Popis výsledku anglicky

This paper is concerned with modeling nonlinear effects in deforming porous fluid saturated media. The proposed modelling approaches are based on the homogenization of quasistatic fluid-structure interaction whereby the material derivative is consideredas a tool for linearisation. Assuming the linear kinematics framework for the first proposed model, the nonlinearity in the Biot continuum is introduced in terms of the material coefficients which are expressed as linear functions of the macroscopic response. These functions are obtained by the sensitivity analysis of the homogenized coefficients computed for a given geometry of the porous structure which transforms as a result of the local deformation. The second model is derived in the framework of the Eulerian formulation allowing for the large deformation kinematics. The proposed sensitivity analysis approach to handle deformation-dependent material coefficients avoids solving local microscopic problems for updated configurations. I

Druh

D - Stať ve sborníku

CEP obor

JI - Kompositní materiály

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2014

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the Twelfth International Conference on Computational Structures Technology

ISBN

978-1-905088-61-4

ISSN

1759-3433

e-ISSN

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Počet stran výsledku

20

Strana od-do

1-20

Název nakladatele

Civil Comp Press

Místo vydání

Stirlingshire

Místo konání akce

Naples, Italy

Datum konání akce

2. 9. 2014

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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