Studying the Ratio of Different Diameters of the Central Hole to the Width of the Plate on the Stress Concentration Factor by Ansys

The FEM is a computational method for solving a wide range of electric and mechanical engineering issues, including structural, heat transfer, thermal and fluid flow. The matter used in the present work is stainless steel with fixed dimensions (l=200, w=100, t=2) mm for a rectangular plate with central circular hole for five cases of diameter hole (10,15,20,25,30) mm. In the current paper resulted, maybe conclusion a max. of stress happens on the holes angles for the five cases of (d/w) for the matter under study. Three method are used to analysis (FEA, Analytical and Graphical), it is observed that, if the ratio of (d/w) increases, the max. stress will be increased with decrease of SCF value for all the five cases for three type of calculation. The P.E.% was calculated in the current work and very close values were obtained, which was the lowest value (0.38%) and the highest is (4.03%) which is very little. It is a small value, which indicates the accuracy of the measurements for the three methods, we can say FEM is a powerful method for determining stresses in a variety of materials .