Počet záznamů: 1
The effect of critical distance in stability condition for the crack at the interface between two materials
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SYSNO ASEP 0385515 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Ostatní články Název The effect of critical distance in stability condition for the crack at the interface between two materials Tvůrce(i) Zouhar, Michal (UFM-A)
Hutař, Pavel (UFM-A) RID, ORCID
Náhlík, Luboš (UFM-A) RID, ORCID
Ševčík, Martin (UFM-A) RID
Knésl, Zdeněk (UFM-A)Celkový počet autorů 5 Zdroj.dok. Engineering Mechanics. - : Association for Engineering Mechanics - ISSN 1802-1484
Roč. 19, 2/3 (2012), s. 155-164Poč.str. 10 s. Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova stability criterion ; critical distance ; bi-material interface Vědní obor RIV JL - Únava materiálu a lomová mechanika CEP GAP107/10/0361 GA ČR - Grantová agentura ČR GAP108/12/1560 GA ČR - Grantová agentura ČR Institucionální podpora UFM-A - RVO:68081723 Anotace The aim of this work is to study the behaviour of a crack with its tip at the interface between two polymer materials. A numerical model of a cracked bi-material tension specimen is investigated and different stability criteria are tested. The stability criterion of a general stress concentrator usually needs a relation between the critical value of the generalized stress intensity factor (HIC) and critical value of the stress intensity factor KIC (fracture toughness). This relation is a function of the elastic mismatch of particular materials; the fracture toughness of the main material and the critical distance d ahead of the stress concentrator, where the criterion is applied. Estimation of distance d is usually not straightforward and different authors use different approaches for its determination. Therefore the main aim of this study is the mutual comparison of published approaches for d estimation and to quantify the influence of d choice on the critical load value. The results obtained can lead to a Berger residual lifetime prediction and safer design of layered structures. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2013
Počet záznamů: 1