FraMCoS 5 2004 Vail, Colorado, USA

An Embedded Cohesive Crack Model for Finite Element Analysis of Concrete Fracture.

This paper presents a numerical implementation of cohesive crack model for the analysis of concrete fracture based on the strong discontinuity approach. A simple central force model is used for the stress vs. crack opening law. The only material data…

First page of: An Embedded Cohesive Crack Model for Finite Element Analysis of Concrete Fracture.
Year 2004
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Abstract

This paper presents a numerical implementation of cohesive crack model for the analysis of concrete fracture based on the strong discontinuity approach. A simple central force model is used for the stress vs. crack opening law. The only material data required are the elastic constants and the mode I softening curve. The additional degrees of freedom defining the crack opening are determined at the crack level, thus avoiding the need of performing a static condensation at the element level. The need for a tracking algorithm is avoided using a consistent procedure for the selection of the separated nodes. Numerical simulations of well known experiments are presented to show the ability of the proposed model to simulate fracture of concrete.