I've been asked many times in the past if it was ok to use my part models in a team's animation.
Of coarse ....... that's partially what there there for.
I expect that Autodesk expects to see (as I do) their models creatively used in many entries.
One thing you can do, if you want, is to give credit to those who contributed models during the trailer (non-scoring part) of your animation entry. I know it motivates me to do more when I see that teams are actually using the work that I provide.
First Cad Library