Modelování lomové procesní zóny betonu

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Modelling of the Fracture Process Zone of Concrete

Popis výsledku v původním jazyce

The present work deals with the discrete modelling of the fracture process zone of concrete. The microstructure of concrete is idealised by aggregates and mortar. A discrete framework based on the Rigid Body Spring Model (RBSM) is applied. Fracture is modelled by a scalar damage model applied to the springs connecting the rigid bodies. The heterogeneity is accounted for using a two-folded approach: The geometry of aggregates is modelled explicitly, whereas the microstructure of mortar is represented byan autocorrelated field, where the autocorrelation length represents the lengthscale of the microstructure of mortar. The evolution of the size and shape of the fracture process zone for uniaxial tension is studied using a periodic cell. Special attention is paid on the generation of the mesh at the boundaries of the periodic cell to avoid mesh alignment which could influence the fracture process zone.

Název v anglickém jazyce

Modelling of the Fracture Process Zone of Concrete

Popis výsledku anglicky

The present work deals with the discrete modelling of the fracture process zone of concrete. The microstructure of concrete is idealised by aggregates and mortar. A discrete framework based on the Rigid Body Spring Model (RBSM) is applied. Fracture is modelled by a scalar damage model applied to the springs connecting the rigid bodies. The heterogeneity is accounted for using a two-folded approach: The geometry of aggregates is modelled explicitly, whereas the microstructure of mortar is represented byan autocorrelated field, where the autocorrelation length represents the lengthscale of the microstructure of mortar. The evolution of the size and shape of the fracture process zone for uniaxial tension is studied using a periodic cell. Special attention is paid on the generation of the mesh at the boundaries of the periodic cell to avoid mesh alignment which could influence the fracture process zone.

Druh

D - Stať ve sborníku

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2007

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the Fifteenth UK Conference of the Association of Computational Mechanics in Engineering

ISBN

978-1-905088-14-0

ISSN

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e-ISSN

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Počet stran výsledku

1

Strana od-do

82-82

Název nakladatele

Civil-Comp Press Ltd

Místo vydání

Stirling

Místo konání akce

Glasgow

Datum konání akce

2. 4. 2007

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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