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

Bent F. Sørensen*, Stergios Goutianos

*Corresponding author for this work

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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
Title of host publicationProceedings of the 6th European Conference on Computational Mechanics: Solids, Structures and Coupled Problems, Eccm 2018 and 7th European Conference on Computational Fluid Dynamics, Ecfd 2018
Number of pages8
Publication date2020
Pages1974-1981
ISBN (Electronic)9788494731167
Publication statusPublished - 2020
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)
CountryUnited Kingdom
CityGlasgow
Period11/06/201815/06/2018

Keywords

  • Multiple cracks
  • Fracture resistance
  • Delamination
  • Cohesive law

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