What is the easiest way to simulate a cushion for the RF‑FORM‑FINDING add‑on module?


Basically, RFEM does not accept identical surfaces at the same location because of the ambiguity. In this case, RFEM automatically deletes one of the two surfaces. Nevertheless, it is possible to create a cushion with form-finding in RFEM. You only need to make sure that the surfaces are not at the same location when entering them for the first time. Therefore, it is recommended to define the surfaces of the cushion with a Bézier surface and move the inner control points slightly outwards.


Foil cushion Cushion


Contact us

Did you find your question?
If not, contact us via our free e-mail, chat, or forum support, or send us your question via the online form.

+49 9673 9203 0


RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
3,540.00 USD
RFEM Tensile Membrane Structures

Add-on Module

Form-finding of tensile membrane and cable structures

Price of First License
1,750.00 USD