Abstract
A novel method coupling the scaled boundary finite element method (SBFEM) and the finite element method (FEM) is developed for linear elastic fracture modelling. A very simple but effective remeshing procedure based on the FE mesh only is used to accommodate crack propagation. The crack-tip region is modelled by an SBFE subdomain whose semi-analytical displacement solutions are used to extract accurate stress intensity factors. The SBFE subdomain is coupled with the surrounding FE mesh through virtual interfaces so that non-matching nodal discretisations of the shared boundaries can be used and only one SBFE subdomain is needed at a crack-tip. A few plane problems are modelled to validate the new method.
| Original language | English |
|---|---|
| Pages (from-to) | 126-136 |
| Number of pages | 10 |
| Journal | Computers & Structures |
| Publication status | Published - 27 Feb 2015 |
Keywords
- scaled boundary finite element method, non¬-matching mesh, stress intensity factors, crack propagation, remeshing procedure, linear elastic fracture mechanics