Evaluation of Nonlocal Approaches for Modelling Fracture in Notched Concrete Specimens

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F13%3A00210774" target="_blank" >RIV/68407700:21110/13:00210774 - isvavai.cz</a>

Výsledek na webu

<a href="http://framcos.org/FraMCoS-8/p302.pdf" target="_blank" >http://framcos.org/FraMCoS-8/p302.pdf</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of Nonlocal Approaches for Modelling Fracture in Notched Concrete Specimens

Popis výsledku v původním jazyce

In concrete, growth and coalescence of microcracks lead to formation of visible fracture process zones that transfer stresses by crack bridging and aggregate interlock. Commonly, the behaviour of the fracture process zones is modelled by nonlinear fracture mechanics approaches using stress-strain laws with strain softening. One group of nonlinear fracture mechanics approaches suitable for computational structural analysis are nonlocal models, which lead to regular strain distributions over the fractureprocess zones, independently of the size of finite elements. This is achieved by evaluating the stress at each point based on weighted averages of state variables in the vicinity of that point. However, there is no consensus how the influence of boundaries should be taken into account by the averaging procedures. In the present comparative study, nonlocal damage models with different averaging methods and constitutive laws are investigated, with attention focused on the influence of boun

Název v anglickém jazyce

Evaluation of Nonlocal Approaches for Modelling Fracture in Notched Concrete Specimens

Popis výsledku anglicky

In concrete, growth and coalescence of microcracks lead to formation of visible fracture process zones that transfer stresses by crack bridging and aggregate interlock. Commonly, the behaviour of the fracture process zones is modelled by nonlinear fracture mechanics approaches using stress-strain laws with strain softening. One group of nonlinear fracture mechanics approaches suitable for computational structural analysis are nonlocal models, which lead to regular strain distributions over the fractureprocess zones, independently of the size of finite elements. This is achieved by evaluating the stress at each point based on weighted averages of state variables in the vicinity of that point. However, there is no consensus how the influence of boundaries should be taken into account by the averaging procedures. In the present comparative study, nonlocal damage models with different averaging methods and constitutive laws are investigated, with attention focused on the influence of boun

Druh

D - Stať ve sborníku

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GAP105%2F10%2F2400" target="_blank" >GAP105/10/2400: Víceúrovňové simulace mechanických testů betonu</a><br>

Návaznosti

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

Rok uplatnění

2013

Kód důvěrnosti údajů

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

Název statě ve sborníku

Proceedings of the 8th International Conference on Fracture Mechanics of Concrete and Concrete Structures (FraMCoS-8)

ISBN

978-84-941004-1-3

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

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Název nakladatele

CIMNE

Místo vydání

Barcelona

Místo konání akce

Toledo

Datum konání akce

11. 3. 2013

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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