Critical Load Factor of Tapered Steel Frame 3: FE Model and RF-STABILITY
Tips & Tricks
You can quickly create such model in RFEM due to effective modelling tools (“Generate Surfaces from Members” here) and the well-arranged graphical user interface.
In RF‑STABILITY, critical load factors and the corresponding stability modes can be determined. For this, you can use linear eigenvalue solver or nonlinear stability analysis.
In our example, the linear eigenvalue solver (Lanczos method) determines the critical load factor of 2.26, which corresponds to the previous models of the structure.
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Stability analysis according to the eigenvalue method
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