In Fe-safe, i imported the output file from Abaqus software.Can anyone please let me know how should i get the post processing results related to fatigue test.
This is the same as if you asked "what loads to apply in Abaqus"?
You need to generate your load spectrum, and scale/sequence the Abaqus results appropriately. How you do that depends on your application, there is no "universal fatigue load spectrum" or such.