An isogeometric approach to cohesive zone modeling

作者：Verhoosel Clemens V^*; Scott Michael A; de Borst Rene; Hughes Thomas J R

来源：International Journal for Numerical Methods in Engineering, 2011, 87(1-5): 336-360.

DOI：10.1002/nme.3061

• fracture
• cohesive zone models
• isogeometric analysis
• NURBS
• T-splines

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.

• 出版日期2011-7-8