Plastic Design of Steel Structures in RFEM and RSTAB
New Add-on Module RF-/STEEL Plastic
The RF-/STEEL Plastic add-on module uses the plastic cross-section reserves of steel members. In this way, a very efficient design is possible. Taking into account the interaction conditions, the action effects must not exceed the limit internal forces.
The following design methods are available:
- Cross-sections consisting of two or three sheets (I-, C-, Z-, L-sections, channels, tees), flat steel, pipes and hollow sections according to the Partial Internal Forces Method (PIFM) with redistribution by Kindmann/Frickel
- Elliptical cross-sections with analytical nonlinear optimization procedure
- Simplex Method for general cross-sections
RF-/STEEL Plastic includes an extensive as well as extendable cross-section / material library with standard-specific strength values.
Functions in STEEL Plastic
The add-on module RF-/STEEL Plastic imports all relevant information and internal forces from RFEM/RSTAB. First, you select the members/member sets as well as load cases, load combinations or result combinations that you want to take into account for the ultimate limit state design. The materials from RFEM/RSTAB are preset but can be adjusted (for example changing the yield strength).
RF-/STEEL Plastic designs the cross-sections for tension, compression, bending, torsion, shear and combined internal forces. Furthermore, you can optimize the cross-sections if desired. Then, the program will determine for example the cross-section which is utilized best within a particular section table.
When checking the cross-sections, you can decide if the design values are taken from the standard, or if user-defined values are considered for the calculation. Design-relevant parameters such as the calculation of all cross-sections according to the Simplex Method can be adjusted as desired.
The design ratio of the steel cross-sections can be represented with colors in the RFEM/RSTAB model (see picture above). In this way, you get a quick overview about the zones in the structural system that are stressed too much. Concerning the creation of a structural calculation to be prepared for a test engineer, you can include any input data, results, graphics, etc. in the printout report.
Do you have any questions or need advice?
Contact us or find various suggested solutions and useful tips on our FAQ page.