am setting up simple shaft and hub assembly with interference. the result shows stress concentration at corner elements. somebody can clarify whether the boundary conditions is correct or not ?
I dont know how NX display BC, but I can say that you can use two symmetry planes and constrain one node in each part in TZ direction.
It is not solving for that BC. if fully fixed is provided, it shown stress concentration at that node. how ever, i tried in abaqus using similar conditions where it works.
Post here .dat file with example model.