Abstract
We study non-linear fracture of concrete by discrete cohesive crack model in the context of the Element-Free Galerkin (EFG) method. The crack surface is represented by several straight-line interface elements. The constitutive law of cohesive cracks is considered through the use of these interface elements. The stiffness equation of the domain is constructed by directly including a term in the weak form of the global system equation that is related to the energy dissipation along the interface elements. The constitutive law of cohesive cracks can then be considered directly and efficiently by using this energy term. The validity and efficiency of the proposed method are discussed by using several problems.
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