Kangaroo Spring Mesh Funicular arch and Torsion

Hi everybody, 

I'm relatively new to GH and Kangaroo; I would appreciate any help with a problem I have.

My goal is to simulate a twisting funicular arch. I've created a ribbon mesh and successfully applied a series of forces through Kangaroo, to achieve the relaxed form I am looking for. 

Where I am getting stuck is simulating the lateral deformation of the arch due to the torsional forces of the twist. As is, the arch only has vertical/bending forces acting on it. 

I've used the script developedby Shawn Fernandez and  David Rutten (thanks guys!) a while ago to evaluate the torsional force/vector along a neutral axis of my twisted strip. How would I translate this information into a meaningful force that would give me the deformation that I'm looking for...? Is there another way to do this?

Again, any help would be helpful... Thanks in advance.

Daniel Dirscherl