Journal article
Quasi-static simulation of crack growth in elastic materials considering internal boundaries and interfaces



Publication Details
Authors:
Judt, P.; Ricoeur, A.
Publisher:
Trans Tech Publications
Publication year:
2013
Journal:
Key Engineering Materials
Pages range:
181-184
Volume number:
525-526
Start page:
181
End page:
184
Number of pages:
4
ISSN:
1013-9826

Abstract
This work presents numerical methods used for predicting crack paths in technical structures based on the theory of linear elastic fracture mechanics. The FE-method is used in combination with an efficient remeshing algorithm to simulate crack growth. A post processor providing loading parameters such as the J-integral and stress intensity factors (SIF) is presented. Path-independent contour integrals are used to avoid special requirements concerning crack tip meshing and to enable efficient calculations for domains including interfaces and internal boundaries. In particular, the interaction of cracks and internal boundaries and interfaces is investigated. The simulation combines crack propagation within elastic bodies and at bi-material interfaces. The latter is based on a cohesive zone model. The presented numerical results of crack paths are verified by experiments.


Keywords
cohesive zone, crack growth, J-integral, path independence


Authors/Editors

Last updated on 2019-25-07 at 13:08