Shaft misalignment in coupled rotor system

[shubhamop20]

I am performing a shaft misalignment study. I have attached my setup. I have used standard bearing connections at 3 places for support.

I have the following questions:

1) The image shown below is a zero misalignment system. Now I want to provide misalignment of, say, 0.2mm. How can I incorporate this in Ansys?

2) Do Ansys have the feature to provide offset in the bearings, or do I have to provide the offset in the cad model itself?

[BenjaminStarling]

Just to confirm my understanding, you would like to analyse the misalignment between the bearings? Are you also checking the alignment of the bolted connection?
To model the misalignment of the bolted connection you can either move the geometry in CAD, or use a part transform. You can also use the contact properties "Interface Treatment" and "Offset" to simulate extreme misalignments which require the bolts to take up a shear load to bring the misaligned parts together.
For the bearings the mobile location can be changed, however, this does not accurately capture any preload on the bearing caused by the misalignment. The COMBI214 Bearing element can be replaced with a series/parallel of springs and dampers, this requires a lot more user input and model building, but allows for initial preload on the springs which can help to model misalignment issues (see COMBI1N4).
The bearing connection you see in graphics is just an annotation, you can decrease it's size by zooming in and hitting Display-> Rescale, or you can turn off the bearing annotation in Display-> Preferences.

[shubhamop20]

Thanks a lot, Benjamin for helping. As you said, I think the best way would be to provide the offset in the coupling itself directly.
****Can I apply a rotating load or unbalance on the disc in transient structural, or I have to replace this disc with an eccentric disc. ***
My ultimate aim is to collect time-series data for different shaft misalignment values. The literature says that unbalance will trigger the response at 1X and misalignment at 2X of the operating speed. I want to reproduce this result.
So for the dry run, I am expecting a 1X component in the frequency response(unbalance). And a 1X and 2X component in the presence of misalignment.
****Also, what should I do to rotate the setup I think rotational velocity doesn't rotate the setup. It just applies the inertial load, so adding a point mass will not help to produce an unbalance.
Should I apply a torque or something? What's your take on this? ****