Pressure acts on the crack face?

Select "Y" or "N" radio buttons. This option is ignored for outside cracks. 

When this option is "Y" for inside surface cracks on cylindrical or spherical components, the KI value for pressure is added to the KI value for Primary (FEA Nodal Values) loads and the KI values used for load cycling.

Take Credit for Compressive Residual Stress in FAD Stress Calcs?

Select "Y or "N" radio buttons. For more info, see compressive residual stresses.