FAQ 003037 EN-US



With RF-IMP, I have generated a pre-deformed equivalent model using a pre-deformed FE mesh. Is the equivalent model now considered for all load combinations, or do I have to enter additional settings?


The pre-deformed equivalent model is not automatically activated for the load combinations. You have to set this manually in the calculation parameters of the load combination. There, activate the "Extra Options" and activate the option "Initial Deformation from Module RF-IMP".

To activate the option in several load combinations at the same time, use the option to select several load combinations.

The calculation with the pre-deformed FE mesh is performed if the corresponding load combinations will be calculated according to second-order or large deformation analysis.


Imperfection Pre-deformed FE mesh Load combination Calculation parameters Special setting

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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
RSTAB Main Program
RSTAB 8.xx

Main Program

The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions

Price of First License
2,550.00 USD
RFEM Other
RF-IMP 5.xx

Add-on Module

Generation of equivalent geometric imperfections and pre-deformed initial structures for nonlinear calculations

Price of First License
760.00 USD