Crack deflection under mixed-mode loading investigated via generalized MTS criterion

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F20%3APU137987" target="_blank" >RIV/00216305:26110/20:PU137987 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1063/5.0034664" target="_blank" >http://dx.doi.org/10.1063/5.0034664</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/5.0034664" target="_blank" >10.1063/5.0034664</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Crack deflection under mixed-mode loading investigated via generalized MTS criterion

Popis výsledku v původním jazyce

The paper deals with investigations of a crack propagating in a semi-circular concrete disc loaded in bending. Various crack inclination angles ensure different degrees of I+II mixed-mode conditions. Generally, concrete material exhibits quasi-brittle fracture behavior, which is difficult to describe. It has been shown that fracture in this kind of material occurs in a larger zone around the crack tip. Thus, the multi-parameter fracture mechanics concept can help to understand the facture response better. Particularly, the Williams power expansion with a selected number of its initial terms is used for approximation of the crack-tip stress/displacement field. The over-deterministic method together with a finite element analysis of the problem is used for calculation of the coefficients of the series. The deflection angle of the initial crack is then assessed via generalized/multi-parameter form of Maximum Tangential Stress (MTS) criterion in dependence on various parameters. The theoretical results are compared to experimentally obtained data. The results prove that the multi-parameter description of the crack-tip fields can bring more accurate assessment of the fracture response of a crack under mixed-mode loading.

Název v anglickém jazyce

Crack deflection under mixed-mode loading investigated via generalized MTS criterion

Popis výsledku anglicky

The paper deals with investigations of a crack propagating in a semi-circular concrete disc loaded in bending. Various crack inclination angles ensure different degrees of I+II mixed-mode conditions. Generally, concrete material exhibits quasi-brittle fracture behavior, which is difficult to describe. It has been shown that fracture in this kind of material occurs in a larger zone around the crack tip. Thus, the multi-parameter fracture mechanics concept can help to understand the facture response better. Particularly, the Williams power expansion with a selected number of its initial terms is used for approximation of the crack-tip stress/displacement field. The over-deterministic method together with a finite element analysis of the problem is used for calculation of the coefficients of the series. The deflection angle of the initial crack is then assessed via generalized/multi-parameter form of Maximum Tangential Stress (MTS) criterion in dependence on various parameters. The theoretical results are compared to experimentally obtained data. The results prove that the multi-parameter description of the crack-tip fields can bring more accurate assessment of the fracture response of a crack under mixed-mode loading.

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GJ18-12289Y" target="_blank" >GJ18-12289Y: Pokročilý popis šíření trhlin v kompozitech na bázi alkalicky aktivované matrice</a><br>

Návaznosti

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

Rok uplatnění

2020

Kód důvěrnosti údajů

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

Název statě ve sborníku

FRACTURE AND DAMAGE MECHANICS: Theory, Simulation and Experiment

ISBN

—

ISSN

0094-243X

e-ISSN

—

Počet stran výsledku

8

Strana od-do

1-8

Název nakladatele

AIP Publishing

Místo vydání

Melville, NY

Místo konání akce

Mallorca

Datum konání akce

15. 9. 2020

Typ akce podle státní příslušnosti

EUR - Evropská akce

Kód UT WoS článku

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