Evaluation of Nonlocal Approaches for Modelling Fracture Near Nonconvex Boundaries

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F14%3A00220032" target="_blank" >RIV/68407700:21110/14:00220032 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1016/j.ijsolstr.2014.05.023" target="_blank" >http://dx.doi.org/10.1016/j.ijsolstr.2014.05.023</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.ijsolstr.2014.05.023" target="_blank" >10.1016/j.ijsolstr.2014.05.023</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of Nonlocal Approaches for Modelling Fracture Near Nonconvex Boundaries

Popis výsledku v původním jazyce

Integral-type nonlocal damage models describe the fracture process zones by regular strain profiles insensitive to the size of finite elements, which is achieved by incorporating weighted spatial averages of certain state variables into the stress strainequations. However, there is no consensus yet how the influence of boundaries should be taken into account by the averaging procedures. In the present study, nonlocal damage models with different averaging procedures are applied to the modelling of fracture in specimens with various boundary types. Firstly, the nonlocal models are calibrated by fitting load displacement curves and dissipated energy profiles for direct tension to the results of mesoscale analyses performed using a discrete model. Theseanalyses are set up so that the results are independent of boundaries. Then, the models are applied to two-dimensional simulations of three-point bending tests with a sharp notch, a V-type notch, and a smooth boundary without a notch. The

Název v anglickém jazyce

Evaluation of Nonlocal Approaches for Modelling Fracture Near Nonconvex Boundaries

Popis výsledku anglicky

Integral-type nonlocal damage models describe the fracture process zones by regular strain profiles insensitive to the size of finite elements, which is achieved by incorporating weighted spatial averages of certain state variables into the stress strainequations. However, there is no consensus yet how the influence of boundaries should be taken into account by the averaging procedures. In the present study, nonlocal damage models with different averaging procedures are applied to the modelling of fracture in specimens with various boundary types. Firstly, the nonlocal models are calibrated by fitting load displacement curves and dissipated energy profiles for direct tension to the results of mesoscale analyses performed using a discrete model. Theseanalyses are set up so that the results are independent of boundaries. Then, the models are applied to two-dimensional simulations of three-point bending tests with a sharp notch, a V-type notch, and a smooth boundary without a notch. The

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JJ - Ostatní materiály

OECD FORD obor

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Projekt

<a href="/cs/project/GAP108%2F11%2F1243" target="_blank" >GAP108/11/1243: Model pro porušení spongiózní kosti s uvážením velkých deformací a anizotropie</a><br>

Návaznosti

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

Rok uplatnění

2014

Kód důvěrnosti údajů

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

Název periodika

International Journal of Solids and Structures

ISSN

0020-7683

e-ISSN

—

Svazek periodika

51

Číslo periodika v rámci svazku

18

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

13

Strana od-do

3239-3251

Kód UT WoS článku

000340141100022

EID výsledku v databázi Scopus

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