Mixed Finite Element Computation of Energy Release Rate in Anisotropic Materials Based on Virtual Crack Closure-Integral Method
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https://orcid.org/0000-0002-3171-1265
Salah Bouziane
Civil Engineering department, University of August 20, 1955, Skikda, Algeria. Laboratory of Civil Engineering and Hydraulics, University of May 8, 1945, Guelma, Algeria.
Hamoudi Bouzerd
Civil Engineering department, University of August 20, 1955, Skikda, Algeria. Laboratory of Civil Engineering and Hydraulics, University of May 8, 1945, Guelma, Algeria.
Abstract
The material with anisotropic properties are becoming widely essential due to the ease to manipulate their mechanical properties in order to obtain a particular quality, insure safety or a specific behavior. Those kind of materials are considered anisotropic because their characteristics and behavior are dependent to every direction of the material’s orientation.
In this work, the virtual crack closure-integral technique is implemented to a mixed finite element, in addition with the stiffness derivative procedure, to evaluate the energy release rate of crack extension in anisotropic materials. A simulation of a cracked edge rectangular plat with anisotropic characteristics is taken for example.
The results obtained are in good agreement with the analytical results, making the proposed technique a good model for fracture investigation and allow it to study more complicated cases in future works.
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