Multi-parameter fracture mechanics: crack path in a mixed-mode specimen

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F19%3A00510647" target="_blank" >RIV/68081723:_____/19:00510647 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216305:26110/19:PU132505

Výsledek na webu

<a href="https://www.fracturae.com/index.php/fis/article/view/2491/2632" target="_blank" >https://www.fracturae.com/index.php/fis/article/view/2491/2632</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3221/IGF-ESIS.49.07" target="_blank" >10.3221/IGF-ESIS.49.07</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Multi-parameter fracture mechanics: crack path in a mixed-mode specimen

Popis výsledku v původním jazyce

A mixed-mode geometry has been chosen to investigate a crack propagation using the multi-parameter fracture mechanics concept. The so-called Williams' series expansion is used for the crack-tip stress field approximation. It has been shown that application of the generalized fracture mechanics concept can be crucial for materials with specific fracture behaviour, such as elastic-plastic or quasi-brittle one, when fracture occurs not only in the very vicinity of the crack tip, but also in a more distant surrounding. Then, considering the higher-order terms of the Williams' expansion in fracture criteria (describing the crack stability and/or crack propagation direction) can bring more precise results. The coefficients of the Williams' expansion must be calculated numerically (for instance by means of the over-deterministic method in this work) for each cracked configuration, which is very time-consuming, and the analysis is very extensive even for a few basic cracked specimen configurations. On the other hand, a suitable choice of the geometrical configuration of the cracked disc enables performing experiments only on the specimens that could prove the theory about the importance of using the higher-order terms.

Název v anglickém jazyce

Multi-parameter fracture mechanics: crack path in a mixed-mode specimen

Popis výsledku anglicky

A mixed-mode geometry has been chosen to investigate a crack propagation using the multi-parameter fracture mechanics concept. The so-called Williams' series expansion is used for the crack-tip stress field approximation. It has been shown that application of the generalized fracture mechanics concept can be crucial for materials with specific fracture behaviour, such as elastic-plastic or quasi-brittle one, when fracture occurs not only in the very vicinity of the crack tip, but also in a more distant surrounding. Then, considering the higher-order terms of the Williams' expansion in fracture criteria (describing the crack stability and/or crack propagation direction) can bring more precise results. The coefficients of the Williams' expansion must be calculated numerically (for instance by means of the over-deterministic method in this work) for each cracked configuration, which is very time-consuming, and the analysis is very extensive even for a few basic cracked specimen configurations. On the other hand, a suitable choice of the geometrical configuration of the cracked disc enables performing experiments only on the specimens that could prove the theory about the importance of using the higher-order terms.

Druh

J_imp - Článek v periodiku v databázi Web of Science

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

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název periodika

Frattura ed Integrita Strutturale

ISSN

1971-8993

e-ISSN

—

Svazek periodika

49

Číslo periodika v rámci svazku

JUL

Stát vydavatele periodika

IT - Italská republika

Počet stran výsledku

9

Strana od-do

65-73

Kód UT WoS článku

000487285000006

EID výsledku v databázi Scopus

2-s2.0-85070772039