Quasicontinuum Method Extended to Disordered Materials

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F15%3A00231846" target="_blank" >RIV/68407700:21110/15:00231846 - 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

Quasicontinuum Method Extended to Disordered Materials

Popis výsledku v původním jazyce

The quasicontinuum (QC) method is a relatively new computational technique, which combines continuum and atomistic approaches. The key idea is to cut down the computational cost by reducing the number of degrees of freedom (DOFs) of the fully atomistic approach. Instead of treating all atoms as independent, a small subset of atoms is carefully selected to represent the whole system. The selected atoms, called the repatoms, are used to approximate the DOFs of other atoms. This technique was originally proposed for regular atomistic lattices. In the present work, a similar technique is applied to an irregular set of particles representing a heterogeneous material. The paper describes three QC-inspired approaches that can approximate a discrete particle model with particles connected by elastic links. All of them have been implemented in OOFEM. Accuracy, efficiency and specific properties of all simplified approaches based on the idea of QC are evaluated by comparison of the results obtai

Název v anglickém jazyce

Quasicontinuum Method Extended to Disordered Materials

Popis výsledku anglicky

The quasicontinuum (QC) method is a relatively new computational technique, which combines continuum and atomistic approaches. The key idea is to cut down the computational cost by reducing the number of degrees of freedom (DOFs) of the fully atomistic approach. Instead of treating all atoms as independent, a small subset of atoms is carefully selected to represent the whole system. The selected atoms, called the repatoms, are used to approximate the DOFs of other atoms. This technique was originally proposed for regular atomistic lattices. In the present work, a similar technique is applied to an irregular set of particles representing a heterogeneous material. The paper describes three QC-inspired approaches that can approximate a discrete particle model with particles connected by elastic links. All of them have been implemented in OOFEM. Accuracy, efficiency and specific properties of all simplified approaches based on the idea of QC are evaluated by comparison of the results obtai

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

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the Fifteenth International Conference on Civil, Structural and Environmental Engineering Computing

ISBN

978-1-905088-63-8

ISSN

1759-3433

e-ISSN

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Počet stran výsledku

10

Strana od-do

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Název nakladatele

Civil-Comp Press Ltd

Místo vydání

Stirling

Místo konání akce

Praha

Datum konání akce

1. 9. 2015

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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