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Sonja von Bloh, M.Sc.
2020-08-05

None, Rigid, or Non-Rigid Stiffener

Window "1.2 Geometry", the "Supports" tab, provides the selection between none, rigid, or non-rigid stiffener. How does this affect the calculation?

Answer:

The stiffener type selected in the "Supports" tab of Window "1.2 Geometry" (Image 01) has an effect on the buckling analysis of the beam, as this affects the contribution of the web χW to the shear resistance according to EN 1993‑1‑5 [1],
, 5.3.

Selecting Stiffener
1 Selecting Stiffener

The factor χW for the web contribution to the shear resistance is displayed in the result table for the buckling analysis (Image 02).

Buckling Design
2 Buckling Design

Author

Ms. von Bloh provides technical support for our customers and is responsible for the development of the SHAPE‑THIN program as well as steel and aluminum structures.

References
  1. European Committee for Standardization (CEN). (2009). Eurocode 3: Design of Steel Structures – Part 1-5: General Rules – Plated Structural Elements, EN 1993-1-5:2006 + AC:2009. Beuth Verlag GmbH, Berlin.
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