The Determination of The Stress Intensity Factors of A Steel Plate with Different Thickness Using Fem

Abstract

This paper presents the finite element method for determining the stress intensity factors of steel plates with different thickness having an elliptical cutout in the center and subjected to different stresses. The failure of the cracked parts affected by the stresses in the crack tip vicinity. The stress contribution can be determined by the stress intensity factor K. For this purpose, an initial crack can be simulated and modeled. Each of K corresponds to a crack propagation method. In this study the ANSYS software is used for numerical modeling with several elements of solid type and nodes. a finer mesh is used around the crack tip for more accurate results. Then an error percentage can be determined by using ANSYS results. The present research is aimed to improve the formulation by including the effect of the crack-face closure on the stress intensity factors K.