How can I get proof of an area in RFEM?

Answer

If you want to perform a buckling check with shell elements, the additional modules RF-STABIL, RF-IMP and RF-STEEL surfaces are necessary.

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.

Attachments
Beul detection surfaces.wmv (15.03 MB)

Keywords

Bumps, bumps, buckling surface

Downloads

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RFEM Other
RF-STABILITY 5.xx

Add-on Module

Stability analysis according to the eigenvalue method

Price of First License
1,030.00 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
RFEM Steel and Aluminum Structures
RF-STEEL 5.xx

Add-on Module

Stress analysis of steel surfaces and members

Price of First License
1,030.00 USD