How can I get proof of an area in RFEM?
Determine decisive load according to theory of the 1st order.
The results of the authoritative LC are then used in RF-STABIL to determine the lowest eigenform (local evasion / bulging of the surface).
With the result of RF-STABLE, a pre-deformed structure can be generated in RF-IMP by scaling the eigenform to a maximum ordinate (maximum value of pre-deformation). The maximum value of the pre-deformation is to be determined by the engineer.
Now you copy the authoritative LK and measure it according to theory II. Order taking into account the pre-deformed structure of RF-IMP.
The results are then used to perform a stress analysis with RF-STEEL surfaces.
In the attached video the basic procedure is clarified once more.
Beul detection surfaces.wmv (15.03 MB)
Bumps, bumps, buckling surface
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Stability analysis according to the eigenvalue method
Generation of equivalent geometric imperfections and pre-deformed initial structures for nonlinear calculations
Stress analysis of steel surfaces and members