Increase of fracture resistance by the interaction of two cracks - cohesive law scale effects

Bent F. Sørensen, Stergios Goutianos

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    Abstract

    The increase of the fracture resistance of a layered structure by adding weak layers is examined through a finite element model containing two cracks. The cracks are modelled as cohesive zones. The cohesive law parameters, such as the critical opening relative to the specimen size, introduce scale effects. It is shown that a maximum increase of the fracture resistance can be attained for certain cohesive law parameters even when the distance between the two cracks is relative large relative to the structure dimensions.
    Original languageEnglish
    Publication date2018
    Number of pages8
    Publication statusPublished - 2018
    Event7th European Conference on Computational Fluid Dynamics (ECFD 7) - Glasgow, United Kingdom
    Duration: 11 Jun 201815 Jun 2018

    Conference

    Conference7th European Conference on Computational Fluid Dynamics (ECFD 7)
    Country/TerritoryUnited Kingdom
    CityGlasgow
    Period11/06/201815/06/2018

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