Various methods of numerical estimation of generalized stress intensity factors of bi-material notches

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F09%3A00332677" target="_blank" >RIV/68081723:_____/09:00332677 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Various methods of numerical estimation of generalized stress intensity factors of bi-material notches

Popis výsledku v původním jazyce

The study of bi-material notches becomes a topical problem as they can model efficiently geometrical or material discontinuities. When assessing crack initiation conditions in the bi-material notches, the generalized stress intensity factors H have to becalculated. Contrary to the determination of the K-factor for a crack in an isotropic homogeneous medium, for the ascertainment of the H-factor there is no procedure incorporated in the calculation systems. The calculation of these fracture parameters requires experience. Direct methods of estimation of H-factors need choosing usually length parameter entering into calculation. On the other hand the method combining the application of the reciprocal theorem (Psi-integral) and FEM does not require entering any length parameter and is capable to extract the near-tip information directly from the far-field deformation.

Název v anglickém jazyce

Various methods of numerical estimation of generalized stress intensity factors of bi-material notches

Popis výsledku anglicky

The study of bi-material notches becomes a topical problem as they can model efficiently geometrical or material discontinuities. When assessing crack initiation conditions in the bi-material notches, the generalized stress intensity factors H have to becalculated. Contrary to the determination of the K-factor for a crack in an isotropic homogeneous medium, for the ascertainment of the H-factor there is no procedure incorporated in the calculation systems. The calculation of these fracture parameters requires experience. Direct methods of estimation of H-factors need choosing usually length parameter entering into calculation. On the other hand the method combining the application of the reciprocal theorem (Psi-integral) and FEM does not require entering any length parameter and is capable to extract the near-tip information directly from the far-field deformation.

Druh

O - Ostatní výsledky

CEP obor

JL - Únava materiálu a lomová mechanika

OECD FORD obor

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Projekt

<a href="/cs/project/GA101%2F08%2F0994" target="_blank" >GA101/08/0994: Stanovení podmínek iniciace porušení v bi-materiálových vrubech složených ze dvou ortotropních materiálů</a><br>

Návaznosti

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