I am trying to predict distortion and residual stresses in a part in ANSYS Mechanical 19.1 using the additive wizard. The simulation process perfectly converges until the step of base plate removal is reached. I know the build has to be constrained properly to get the deformation and stress state effect after the print is removed from the base, for which the three nodes I chose were 3 corners of the build which in my opinion should perfectly constrain the model in 3 translation and 3 rotational degrees of freedom, but the solution is always interrupted because of rigid body motion. Could I be given any tutorials on how to constrain the build after its removal from base.
I have attached the model image along with this message.