Question:
Why does the form-finding not work for the "Cable on Pulleys" member type?
Answer:
The "Cable on Pulleys" member type can only describe the forces N and displacements u‑x in the direction of the cable. Therefore, it cannot be combined with regard to the form‑finding, for example, at the edge of membrane surfaces.
For this, see also Chapter 4.17 of the online manual for RFEM 5.