In addition to our technical support (e.g. via chat), you’ll find resources on our website that may help you with your design using Dlubal Software.
Frequently Asked Questions (FAQ)
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According to EN 1993-1-1 and DIN 18800 Part 2, it is necessary to get specified the equivalent geometrical imperfections for the second-order calculation to determine geometric and structural imperfections as well. This pre-deformation should be applied affinely to the lowest buckling or lateral-torsional buckling mode.
Therefore, in the program FE-LTB, the eigenmode belonging to the smallest eigenvalue is calculated (preliminary eigenvalue analysis) and then chosen as initial deformation mode. The imperfection approach is then carried out by the user scaling the eigenmode.
Thus, in RF-/FE-LTB, the pre-deformation is based on the eigenmode. The imperfections defined in RFEM/RSTAB are irrelevant and are therefore not adopted.
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Wind Simulation & Wind Load Generation
With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated by means of a digital wind tunnel.
The generated wind loads acting on these objects can be imported to RFEM or RSTAB.
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