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.
|Number of pages||8|
|Publication status||Published - 2018|
|Event||7th European Conference on Computational Fluid Dynamics (ECFD 7) - Glasgow, United Kingdom|
Duration: 11 Jun 2018 → 15 Jun 2018
|Conference||7th European Conference on Computational Fluid Dynamics (ECFD 7)|
|Period||11/06/2018 → 15/06/2018|