Abstract
In this paper, a novel method for the finite element analysis of three-dimensional cracks is developed by connecting global and local meshes using polyhedral elements. A local mesh including a fine spider-web mesh around the crack tip is arbitrary placed in a coarse global mesh of hexahedral elements. Polyhedral elements are generated by modifying the hexahedral elements at the interface between global and local meshes. The present polyhedral elements provide a seamless connection between global and local meshes. Numerical results show that the present method can be effectively used to analyze three-dimensional cracks by connecting global and local meshes using polyhedral elements.
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