When defining the material as "Isotropic Masonry 2D", I receive an error message saying the authorization of the program failed.


In order to use the "Isotropic Masonry 2D" material, the RF‑MAT NL add-on module has to be licensed. Without the RF‑MAT NL license, only the material models "Isotropic linear elastic" and "Orthotropic elastic 2D/3D" are available.


Masonry MAT-NL

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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 Other
RF-MAT NL 5.xx

Add-on Module

Consideration of nonlinear material laws

Price of First License
1,300.00 USD