How can I connect partial cross-sections to a gross cross-section?

Answer

SHAPE‑THIN provides the option to connect independent cross-section parts by means of so-called null elements. Thus, you will get a gross cross-section and this can be used for the design in RFEM or RSTAB.
Null Elements:
It is necessary to assign a thickness t to each element. This value is the actual thickness of the cross-section part for the full transfer of the normal actions.
Furthermore, the effective thickness t* controls the shear transfer for "artificial" coupling elements with the thickness of t = 0. These null elements are used to create a shear connection between two elements that do not have a common node. The definition of the shear thickness t* > 0 is required for the null elements that are not affected by the normal elements (t > 0) over their entire length.

Keywords

Connecting cross-section parts Gross cross-section Null elements

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Cross-Sections Thin-Walled
SHAPE-THIN 8.xx

Cross-Section Properties Software

Section properties, stress analysis, and plastic design of open and closed thin-walled cross-sections

Price of First License
1,120.00 USD