Applying bending moment on sheetmetal

Hi everyone,

Short question:
How to apply a bending moment on a vertical vector. to obtain the warp angle like in the following image:

Long story:
I had some fun with recreating the method decribed in this paper here:

No I got stuck at the Karamba part (described under Point 5 in the paper)since I am a novice in Karamba, and an archtitect;)

That’s how I set it up:

File:
20220418_GetBendingMoments.gh (49.4 KB)

Thanks for every hint and have a nice start in the week!