Open the Static Structural system and follow these steps:
Select a body in the model by picking it in the Graphics view.
Click the Motion Loads icon in the Motion Loads tab.
This automatically:
Creates Remote Points where Forces and Moments issued from the Rigid Dynamic Solution are applied.
Creates Rotational Velocity and Rotational Acceleration corresponding to the Angular Velocity and Angular Acceleration issued from the Rigid Dynamic Solution.
Changes the behavior of the selected body to flexible.
Suppresses all the other bodies.
While the loads applied by remote forces and moments are balanced by the inertia forces, the part is nevertheless not "supported" and the analysis needs to be adapted to be stable. This can be achieved, in general, by adding weak springs and/or with inertia relief. In some instances, for example when the part has a fixed joint to ground, it can be preferable to replace the force and torque corresponding to this joint to ground by a fixed support. When accurate contact representation between bodies is important to properly capture stresses, you could choose to keep more than one body in the analysis. In that case, use separate static systems for each part and assemble them together.
Now solve the Static Structural system.
To Perform the same operation on another body, unsuppress all bodies and repeat steps 1 through 4.
Note: The modification of the Rigid Dynamics system or the export time requires the Motion Loads to be re-imported.