Solidworks refuses to do a cyclic symetry on a disk with a central hole and a splined outer edge. So my strategy is to replace the cyclic symetry by a roller/slider fixture on the 2 edges comming from the cut which mimicks the symetry.
cyclic symetry.png
There is a torque applied to the central hole and the outer edge with the splines are fixed. So the torque imparts a small rotation elastic deformation to the part. The problem with the slider/roller fixture strategy is that it is removing the movement implied by the torque.

So, is there any ideas on how to make it equivalent?

Thank you.