Okay, here goes....
I have a Main Assembly that contains several sub-assemblies, including Sub-Assembly-A. The components of Sub-Assembly-A are mostly mated, and immovable. However, a few degrees of freedom remain. They are fixed by mating component faces to faces of other components in Main Assembly. These mates determine the final geometry of everything.
Now, I need to do an FEA on JUST Sub-Assembly-A to make sure the loads are low enough. However, the geometry imposed by Main Assembly is important. If I try to analyze Sub-Assembly-A, the geometry might not be correct because some parts can move.
So, how do I "fix" the geometry imposed by Main Assembly and do the FEA on just Sub-Assembly-A? It must be straightforward, but I'm just not seeing it.
Thanks in advance!