I am working on a submodel (in ANSYS 2021) which comes from a global model that has multiple load steps, varying temperatures, dynamic and static loads, and external data as input. After I got results, my submodel didnt seem to line up correctly when evaluating some reaction forces at key areas, about 50% difference. This suggested to me that I imported loads incorrectly (assuming I was far enough away from my boundary) but I also had a thought about theory that someone here might know.

As I understand it, we are always solving for nodal displacements, to which all of our other relations stem from. So, I guess I am wondering, why do I need to import anything other than my cut boundary displacements? Those cut boundary displacements are a result of all of the loading conditions (no matter what they are) at the end of the load step. So by that logic (and maybe im missing something here) I should not need to import temperature, acceleration, etc. in addition to my cut-boundary displacement.

I got in touch with an ANSYS rep and he didn't really end up having an answer to that.