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…
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.