January 3, 2022 at 1:59 pm
Akshay Maniyar
Ansys Employee

This is the Ansys How to video for your reference which explains all 3 interface treatment options for interference fit.
Positive offset value is used to model initial interference fits without modifying the geometry: model the geometry in a just-touching condition and use a positive Add Offset value to implement the interference.
Thanks Amaniyar