Evaluation of Stress Concentration Factor- Java Applet.
This applet determines the theoretical stress concentration factor for a rectangular element with a central hole subject to tension. The ratio of the hole diameter / plate width should not exceed 0.5.
Enter the plate width and hole radius in mm and click on the 'Calculate' button.
This stress concentration factor is for use with the average stress calculated on the net reduced cross section area, ie stress = force / (plate thickness (plate width - hole dia.)). The position of the maximum stress is indicated by the red crosses.
These calculations are based on information contained in "Roark's Formulas for Stress and Strain", 6th Ed. McGraw Hill, 1989 and also "Stress Concentration Factors", by R E Peterson, John Wiley and Sons, 1974. Both these publications contain information relating to a large number of configurations.
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David Grieve, 21 st August 2000.