Quasicontinuum Method Combined with Anisotropic Microplane Model

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F16%3A00305959" target="_blank" >RIV/68407700:21110/16:00305959 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.4028/www.scientific.net/AMR.1144.142" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/AMR.1144.142</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.4028/www.scientific.net/AMR.1144.142" target="_blank" >10.4028/www.scientific.net/AMR.1144.142</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Quasicontinuum Method Combined with Anisotropic Microplane Model

Popis výsledku v původním jazyce

The quasicontinuum method (QC) is a multiscale simulation technique used in computational mechanics. The QC combines fast continuum and exact atomistic approaches. In the present work, the QC idea is applied to particle systems with elastic links representing the material microstruc ture. The material model based on the idea of microplanes is used to provide a continuous repre sentation of microstructure. In the microplane model, the constitutive relations are defined on planes with various orientations and the macroscopic stress is obtained by integration over all possible directions of microplanes. But this approach do not work well in combination with the QC approach if the microplane orientations are assumed to be uniformly distributed. Therefore, an anisotropic version of the microplane model, which takes into account the specific directions of individual links, is proposed and implemented in finite element solver OOFEM. Accuracy and specific properties of QC-inspired approaches with different types of microplane models are evaluated by comparison with the fully resolved particle model.

Název v anglickém jazyce

Quasicontinuum Method Combined with Anisotropic Microplane Model

Popis výsledku anglicky

The quasicontinuum method (QC) is a multiscale simulation technique used in computational mechanics. The QC combines fast continuum and exact atomistic approaches. In the present work, the QC idea is applied to particle systems with elastic links representing the material microstruc ture. The material model based on the idea of microplanes is used to provide a continuous repre sentation of microstructure. In the microplane model, the constitutive relations are defined on planes with various orientations and the macroscopic stress is obtained by integration over all possible directions of microplanes. But this approach do not work well in combination with the QC approach if the microplane orientations are assumed to be uniformly distributed. Therefore, an anisotropic version of the microplane model, which takes into account the specific directions of individual links, is proposed and implemented in finite element solver OOFEM. Accuracy and specific properties of QC-inspired approaches with different types of microplane models are evaluated by comparison with the fully resolved particle model.

Druh

D - Stať ve sborníku

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GA14-00420S" target="_blank" >GA14-00420S: Kvazikontuální metody pro diskrétní disipativní soustavy</a><br>

Návaznosti

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

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název statě ve sborníku

Modern Methods of Experimental and Computational Investigations in Area of Construction II

ISBN

978-3-0357-1092-2

ISSN

1022-6680

e-ISSN

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Počet stran výsledku

6

Strana od-do

142-147

Název nakladatele

Trans Tech Publications Inc.

Místo vydání

Pfaffikon

Místo konání akce

Praha

Datum konání akce

22. 9. 2016

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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