The Influence of Constraint Level on Crack Path

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

The Influence of Constraint Level on Crack Path

Popis výsledku v původním jazyce

The main aim of the work was to estimate effect of the constraint on the predicted crack path and show the cases where the failure of the component could be described more precisely by constraint-based description. A special specimen geometry with a highlevel of constraint was used. Numerical predictions of the crack path in a modified CT specimen are compared with experimental results. The numerical prediction of the crack path based on a modified Maximum Tangential Stress (MTS) criterion (the criterion uses a two-parameter description of the stress field around the crack tip) is generally in agreement with the experimental data. The classical MTS criterion was found much more sensitive on the crack increment. It can therefore be concluded, that themodified criterion in the framework of two-parameter linear elastic fracture mechanics estimated the crack path more precisely only in the case of a high level of constraint.

Název v anglickém jazyce

The Influence of Constraint Level on Crack Path

Popis výsledku anglicky

The main aim of the work was to estimate effect of the constraint on the predicted crack path and show the cases where the failure of the component could be described more precisely by constraint-based description. A special specimen geometry with a highlevel of constraint was used. Numerical predictions of the crack path in a modified CT specimen are compared with experimental results. The numerical prediction of the crack path based on a modified Maximum Tangential Stress (MTS) criterion (the criterion uses a two-parameter description of the stress field around the crack tip) is generally in agreement with the experimental data. The classical MTS criterion was found much more sensitive on the crack increment. It can therefore be concluded, that themodified criterion in the framework of two-parameter linear elastic fracture mechanics estimated the crack path more precisely only in the case of a high level of constraint.

Druh

O - Ostatní výsledky

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

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