An isogeometric approach to cohesive zone modeling

The possibility of enhancing a B‐spline basis with discontinuities by means of knot insertion makes isogeometric finite elements a suitable candidate for modeling discrete cracks. In this contribution we use isogeometric finite elements to discretize the cohesive zone formulation for failure in materials. In the case of a pre‐defined interface, non‐uniform rational B‐splines are used to obtain an efficient discretization. In the case that propagating cracks are considered, T‐splines are found to be more suitable, due to their ability to generate localized discontinuities. Various numerical simulations demonstrate the suitability of the isogeometric approach to cohesive zone modeling. Copyright © 2010 John Wiley & Sons, Ltd.