David Mercier
Ansys Employee
Just to add a comment about material data in Granta Selector. You can have access to S-N curves, at least to fatigue strength model like given below for a low alloy steel, in the database MaterialUniverse which gives access to generic material datasheets. In such datasheet, the fatigue stregth model, displayed as an S-N curve on the datasheet, shows the highest cyclic stress amplitude the material can survive, when the stress is repeatedly applied and relaxed (or reversed) for a given number of cycles.nnn