In the Settings & Options tab, you can adjust the specifications for the calculation, as well as the geometric tolerances of objects.
Manufacturing Type and Buckling Curve
You can select the manufacturing type of the cross-section from the list. The following manufacturing types are available:
- --
- Hot-rolled
- Cold-formed
- Welded
- Sawn
- Glued-Laminated Timber
In the Steel Design add-on, the manufacturing method determines which part of the standard is used for design.
You can select the buckling curve of the cross-section about the axes y and z from the list. Buckling curves are irrelevant for RSECTION. The specifications for applying imperfections or for the stability analysis in the design add-ons only apply when using the cross-sections in RFEM/RSTAB.
Stresses on Elements
Both check boxes control for which locations of the element are the stresses determined: They can be calculated for the Most Unfavorable Element Edge (default) or the Element Center Lines only.
Effective Section Analysis Settings
The Effective Section Analysis Settings are displayed if you activate the "Effective / Steel / Aluminium section" check box in the Basis tab.
Additional Bending Moments
For cross-sections that are not subjected to double symmetry and subjected to compression, the centroidal position of the effective cross-section shifts, compared to the gross cross-section. The external compressive force acting centrically on the gross cross-section now acts eccentrically on the effective cross-section, and an additional bending moment is created. This additional bending moment is considered in the calculation by default. Select the check box if you want to neglect the additional bending moment.
Iterations
An iterative procedure is required to determine the effective cross-section. In the "Maximum number of iterations" text box, you can define the highest possible number of calculation runs. As soon as the difference between the results of two iterations falls below the limit defined in the "Maximum difference between iterations" text box, the calculation stops.
Considering Effective Widths According to EN 1993-1-5, Annex E
This check box is only accessible if you have selected the standards EN 1993‑1‑1 and EN 1993‑1‑5 in the Basis tab. Annex E of EN 1993‑1‑5 describes an alternative method for determining the effective cross-sections for stresses below the yield strength. Activate this check box if you want to calculate the effective cross-section according to Annex E.
Transverse weld acc. to EN 1999-1-1
This check box is only accessible if you have selected the standards EN 1993‑1‑1 and EN 1993‑1‑5 in the Basis the standard EN 1999-1-1. Aktivieren Sie dieses Kontrollfeld, wenn Sie die örtlich begrenzte Festigkeitsreduktion in der WEZ durch Quernähte berücksichtigen wollen. Als Schweißverfahren stehen die Verfahren MIG und WIG zur Auswahl.
Model Tolerances
When modeling or importing data from a CAD program, slight geometric differences may occur in the model objects. RSECTION corrects these inconsistencies automatically if particular distances fall below the limits. Thus, points located very close to each other will be merged, lines located outside of planes will be integrated into parts, or two lines running in minimally different directions are regarded as parallel.
The preset tolerances are suitable for most models. In the case of small model dimensions, it may be necessary to adjust the tolerances accordingly.
Subpanel Generator Settings
With the tolerance for straight subpanels, you can specify the angle between two elements from which a support should be created. If elements are connected at an equal or smaller angle, they are regarded as a connected subpanel.
The "Generate shallow curved subpanels acc. to EN 1999‑1‑1, 6.1.4.3 (4)" check box can only be accessed if you have selected the standard EN 1999‑1‑1 in the Basis tab.
Type of welding
Für die Quernahtnaht ist das Schweißverfahren zu definieren. Es stehen hierbei die Verfahren MIG | Metall-Intergas und WIG | Wolfram Inertgas zur Auswahl.