About: Nonlinear Viscoelastic Analysis of Statistically Homogeneous Random Composites

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	In the present work the Hashin-Shtrikman variational principles are extended to account for the presence of various transformation fields defined as local eigenstrain or eigenstress distributions in the phases. The evolution of such eigen-fields is examined here within a framework of the nonlinear viscoelastic behavior of a polymeric matrix conveniently described by the Leonov model. A fully implicit integration scheme is implemented to enhance the stability and efficiency of the underlying numerical analysis. A special choice of reference medium with a deformation-dependent shear modulus is proposed in order to improve the redistribution of averaged local fields due to local stress inhomogeneities associated with nonlinear viscoelastic response of the matrix phase. The present modeling strategy is further promoted by a good agreement of the results, including estimated effective thermoelastic properties, with the predictions of a direct microstructural computation. In the present work the Hashin-Shtrikman variational principles are extended to account for the presence of various transformation fields defined as local eigenstrain or eigenstress distributions in the phases. The evolution of such eigen-fields is examined here within a framework of the nonlinear viscoelastic behavior of a polymeric matrix conveniently described by the Leonov model. A fully implicit integration scheme is implemented to enhance the stability and efficiency of the underlying numerical analysis. A special choice of reference medium with a deformation-dependent shear modulus is proposed in order to improve the redistribution of averaged local fields due to local stress inhomogeneities associated with nonlinear viscoelastic response of the matrix phase. The present modeling strategy is further promoted by a good agreement of the results, including estimated effective thermoelastic properties, with the predictions of a direct microstructural computation. (en) Tato práce se zabývá analýzou kompozitních materiálů s náhodnou mikrostrukturou. Pro popis chování těchto materiálových systémů jsou využity Hashin-Shtrikmanovy variační principy, vhodně rozšířené pro modelování nelineární vazkopružné odezvy materiálu. V příspěvku je též diskutována vhodná volba referenčního média a způsob linerizace vzniklého inkrementálního problému. Výsledky jsou porovnány se simulací problému metodou konečných prvků. (cs)
Title	Nonlinear Viscoelastic Analysis of Statistically Homogeneous Random Composites Nonlinear Viscoelastic Analysis of Statistically Homogeneous Random Composites (en) Nelineární viskoelastická analýza kompozitních materiálů s náhodnou mikrostrukturou (cs)
skos:prefLabel	Nonlinear Viscoelastic Analysis of Statistically Homogeneous Random Composites Nonlinear Viscoelastic Analysis of Statistically Homogeneous Random Composites (en) Nelineární viskoelastická analýza kompozitních materiálů s náhodnou mikrostrukturou (cs)
skos:notation	RIV/68407700:21110/04:01108183!RIV/2005/GA0/211105/N
http://linked.open.../vavai/riv/strany	644 ; 672
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(GA106/03/0180)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2005
http://linked.open...aciTvurceVysledku	Zeman, Jan Šejnoha, Michal Valenta, Richard
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	České vysoké učení technické v Praze / Fakulta stavební
http://linked.open...dnocenehoVysledku	576400
http://linked.open...ai/riv/idVysledku	RIV/68407700:21110/04:01108183
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	fiber-reinforced composite material; Leonov model; energy methods; microstructures; nonlinear viscoelastic processes; probability and statistics (en)
http://linked.open.../riv/klicoveSlovo	Leonov model microstructures energy methods nonlinear viscoelastic processes probability and statistics fiber-reinforced composite material
http://linked.open...odStatuVydavatele	US - Spojené státy americké
http://linked.open...ontrolniKodProRIV	[A097C8581B8A]
http://linked.open...i/riv/nazevZdroje	International Journal for Multiscale Computational Engineering
http://linked.open...in/vavai/riv/obor	JI
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	3 (xsd:int)
http://linked.open...vavai/riv/projekt	Macroscopic response of textile composites including geometrical and material imperfections
http://linked.open...UplatneniVysledku	2004
http://linked.open...v/svazekPeriodika	4
http://linked.open...iv/tvurceVysledku	Zeman, Jan Šejnoha, Michal Valenta, Richard
issn	1543-1649
number of pages	29 (xsd:int)
http://localhost/t...ganizacniJednotka	21110

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