Abstract
This work proposes an algorithm for the evaluation of the amount of crack growth in two-dimensional problems of linear elastic fracture mechanics. The method is based on the energetic formulation of the coupled displacement-crack propagation problem defined by Nguyen et al. in 1990 in order to study the stability of crack growth in elastic fracture. To avoid the remeshing usually needed for modelling crack growth, a PUFEM model is utilized. The proposed algorithm is valid for stable rectilinear crack growth in LEFM but it can be extended to evaluate stable curvilinear crack growth in materials showing dissipative deformations.
| Original language | English |
|---|---|
| Pages (from-to) | 1403-1419 |
| Number of pages | 17 |
| Journal | Engineering Fracture Mechanics |
| Volume | 71 |
| Issue number | 9-10 |
| DOIs | |
| Publication status | Published - 1 Jan 2004 |
| MoE publication type | A1 Journal article-refereed |
Funding
The authors thank Prof. Raffaele Casciaro for helpful discussions during this work and for his suggestions. The present research was funded by the Academy of Finland in the context of the project No. 80926 “A thermomechanics based fracture assessment method for structural components”.
Keywords
- Energy methods
- Linear elastic fracture mechanics (LEFM)
- PUFEM models
- Stable crack growth
- Unremeshing techniques