Dr. Becht/John C Luf,

To the extent I know, computation of SIF as done in a FE code is somewhat like this:

If our structural finite element model is very fine in the areas of discontinuity, we can get the peak stress at that location (we may have to plot or extrapolate or extend), based on a unit load or moment application. The peak stress (which includes the stress concentration, considered as the product of class 1 indices K2.CAESAR II ) divided by the nominal stress away from the discontinuity = K2.CAESAR II . Stress Intensification factor from FEA results = (K2.CAESAR II )/2= 1/2( Peak stress/ Nominal stress).

Kindly advise if that is the way.

Regards