Crack propagation model taking into consideration the local effect of the deviatoric stress and the non-local effect of the isotropic stress

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378297%3A_____%2F11%3A00375077" target="_blank" >RIV/68378297:_____/11:00375077 - 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

Crack propagation model taking into consideration the local effect of the deviatoric stress and the non-local effect of the isotropic stress

Popis výsledku v původním jazyce

Ductile fracture initiated by a crack is modeled as a process influenced by two factors: (i) the local value of the elastic energy density of the deviatoric part of the stress tensor, and (ii) the nonlocal values of the elastic energy density of the isotropic part of the stress tensor. The effective spot for the deviatoric energy is located at some distance ahead of the crack tip, the nonlocal effect of the isotropic energy operates from a neighborhood of the effective spot, determined by a specific distance from this spot. These assumptions lead to a strength criterion, which is formally a generalization of the Mises criterion. The presented criterion can be used for modeling the influence of the length of the crack, for modeling such phenomena as avoidance of two cracks proceeding against each other, for the pop-in phenomenon, for slowing-down of the progress of a crack near a free surface, etc.

Název v anglickém jazyce

Crack propagation model taking into consideration the local effect of the deviatoric stress and the non-local effect of the isotropic stress

Popis výsledku anglicky

Ductile fracture initiated by a crack is modeled as a process influenced by two factors: (i) the local value of the elastic energy density of the deviatoric part of the stress tensor, and (ii) the nonlocal values of the elastic energy density of the isotropic part of the stress tensor. The effective spot for the deviatoric energy is located at some distance ahead of the crack tip, the nonlocal effect of the isotropic energy operates from a neighborhood of the effective spot, determined by a specific distance from this spot. These assumptions lead to a strength criterion, which is formally a generalization of the Mises criterion. The presented criterion can be used for modeling the influence of the length of the crack, for modeling such phenomena as avoidance of two cracks proceeding against each other, for the pop-in phenomenon, for slowing-down of the progress of a crack near a free surface, etc.

Druh

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

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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Projekt

<a href="/cs/project/GA103%2F09%2F2101" target="_blank" >GA103/09/2101: Vyhodnocování energie odpovědné za růst trhliny</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název periodika

Acta Technica CSAV

ISSN

0001-7043

e-ISSN

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Svazek periodika

56

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

16

Strana od-do

343-358

Kód UT WoS článku

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EID výsledku v databázi Scopus

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