It is recommended that you make some back-of-the-envelope estimates of expected results before launching into your computer solution. Here are the dimensions you need:
The following formula for the axial stress concentration factor, K, holds (see Roark’s Formulas for Stress and Strain, Warren C. Young and Richard G. Budynas, 2002):
We'll compare the above axial stress concentration factor to the value obtained from Ansys.
Launch Ansys Workbench and start a "Static Structural" analysis on the project page as shown in the video below.