Applying torque in COMSOL

I have created the drill string (pipes and joints interconnected alternatively 9 times) geometry in the XZ plane and defined the cylindrical co-ordinate system. Boundary load 10000 N is applied as ‘phi’ input. Structural mechanics (solid) module is used.
I used the following method to apply torque as suggested by the weblink:
people.rit.edu/pnveme/VenkatCOMSOL42/COMSOLTorsionExample/

Frequency domain study is considered. Domain point probe is defined and Z component of displacement is found. It gives the torsional wave output (theta as torque is given as input). I want to extend my wave propagation in 3- dimensions. How can I get the other two components of wave propagation for torsional model??

The Z-displacement of the torsional (COMSOL) program is theta. The option in the COMSOL software is to get X, Y and Z displacements. As the Z-displacement is theta of cylindrical co-ordinate system, I want to get the information about the X and Y displacements. I need the cylindrical co-ordinate outputs (r, theta and a ). But I am not clear how to get them.
Can someone please help me to find the other two components (r, a ) of torsional wave propagation? Thank you very much.

Lakshmi