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The influence of discontinuity of fracture-mechanics parameters on the failure manner of multi-material structures
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SYSNO ASEP 0370064 Druh ASEP A - Abstrakt Zařazení RIV Není vybrán druh dokumentu Název The influence of discontinuity of fracture-mechanics parameters on the failure manner of multi-material structures Tvůrce(i) Klusák, Jan (UFM-A) RID, ORCID
Knésl, Zdeněk (UFM-A)
Profant, T. (CZ)Celkový počet autorů 3 Zdroj.dok. Computational Modeling of Fracture and Failure of Materials and Structures. - Barcelona, Spain : International Center for Numerical Mithods in Engineering, 2011 / Oliver Xavier ; Jirásek Milan ; Allix Olivier ; Moes Nicolas - ISBN 978-84-87867-66-8
S. 129-129Poč.str. 1 s. Forma vydání - - - Akce International Conference on of Computational Modeling of Fracture and Failure of Materials and Structures Datum konání 06.06.2011-08.06.2011 Místo konání Barcelona Země ES - Španělsko Typ akce WRD Jazyk dok. eng - angličtina Země vyd. ES - Španělsko Klíč. slova crack initiation ; generalized fracture mechanics ; composite materials Vědní obor RIV JL - Únava materiálu a lomová mechanika CEP GAP108/10/2049 GA ČR - Grantová agentura ČR CEZ AV0Z20410507 - UFM-A (2005-2011) Anotace Within failure assessment of singular stress concentrators, the crack initiation and propagation direction is often gained from the criterion of the maximum tangential stress. But there are cases where the crack is initiated in a different direction than the direction corresponding to the global maximum of tangential stress. A case of this kind can occur during constrained crack initiation caused by discontinuity of fracture-mechanics parameters, namely the fracture toughness KIC or the threshold value KIth. An example can be the crack initiation in a multi-material wedge, where the extreme value of tangential stress occurs in one of the materials, but the crack initiates in another material part. The maximum value of tangential stress is often oriented to the material with the highest elastic module. But due to different fracture-mechanics properties (KIC or KIth) of particular materials, the crack can initiate into a material with worse fracture-mechanics properties or into the bi-material interface. Pracoviště Ústav fyziky materiálu Kontakt Yvonna Šrámková, sramkova@ipm.cz, Tel.: 532 290 485 Rok sběru 2012
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