When determining the buckling modes in RF‑STABILITY, additional lines are displayed for each member perpendicular to the buckling curve. Why?

Answer

These lines represent the local torsional rotation (see Figure 01). By default, the torsional rotations φx with the standardized values greater than 0.2 are only displayed. This ensures clear arrangement of the graphic. The graphical display is controlled directly in the add-on module (see Figure 02).


Keywords

Torsional rotation Torsion Buckling mode

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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

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RFEM Other
RF-STABILITY 5.xx

Add-on Module

Stability analysis according to the eigenvalue method

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