ANSYS, Inc. Release Notes
In Release 14.0 it is now allowed to have one or more force boundary conditions scoped to a rigid body node, edge, or face. In the case of scoping to an edge or face, the underlying nodes will pick up an equal part of the applied force. Each force on a rigid node is taken into account relatively to the center of gravity of the rigid body. For example this could induce a rotational motion of the total rigid body.
Also, rigid bodies run in parallel support the force boundary condition.