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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AnswerSince the equivalent member designs of Eurocode 3 have different interactions than in the case of the designs according to the partial internal forces method, and the combination of these different designs is not desired for clarity reasons, RFEM deactivates the equivalent member designs when using the RF‑/STEEL Plasticity add-on module.
This check box activates, for example, the usage of Simplex Method also for I‑sections, which would otherwise be automatically designed by using Partial Internal Forces Method (PIFM) including redistribution.
If you deactivate the checkbox, Simplex Method or Partial Internal Forces Method (depending on the selection) will only be used if there is a general cross-section available (for example, from SHAPE‑THIN).
Generally, the identical bilinear approach functions with 2, 3, or 4 boundary nodes are to be used, depending on which element you prefer, but there are differences in the quadrature. The differences in the quadrature are as follows:
Truss: analytically 2 nodes 3 degrees of freedom
Beam: analytically 2 nodes 6 degrees of freedom
Surface (plate): analytically (LYNN-DHILLON-Element)
Surface (wall): Quadrangular Gauss quadrature 2x2, triangular selective quadrature (epsilon_x; epsilon_y; gamma_xy)
Solid: Gauss quadrature 2x2
Nonlinear calculation (for example, plasticity, and so on):
2-point Gauss quadrature in the longitudinal direction of the member
across the cross-section Gauss quadrature 2x2
in the element surface: quadrangular Gauss quadrature 2x2 , triangular 3-point Gauss quadrature
per thickness 9-point Gauss-Lobatto quadrature
Wall - quadrangular Gauss quadrature 2x2 , triangular 3-point Gauss quadrature
Solid - 14-point reduced Gauss quadrature (equivalent to the 3x3x3 Gaus quadrature)
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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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