Base théorique

Smooth results with precise meshing

Steel

Connection

Member

CBFEM

v23.0

v25.1

Cross-sections

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As a result of the continuous research of our solver team, we are always bringing big improvements in mesh generation for the finite element model in the Connection and Member applications. The mesher now gives smoother and, therefore, more precise results.

Using the mesher CM2 MeshTools SDK, which means applying the latest meshing algorithms, provides a smooth mesh structure.

We have also programmed the newest mesh generation rules to ensure better distribution in all plates. Connections composed of splice and backing plates, intermediate stiffening members, or stiffening plates used as custom end plates are tuned for even higher precision of analysis and match better with other parts of the connection.

Plus, the default values for the mesh settings, such as the minimal size of elements and the number of elements on plates, are refined in the Code setup.

Released in IDEA StatiCa version 23.0.

Changes in the mesh of CHS members

The calculation model for circular hollow sections (CHS) is refined to improve numerical accuracy and result consistency. The setting for the minimal finite element size is available in Project settings, allowing users to enforce square meshing, even for small tube diameters (D < 160 mm).

This adjustment removes any limitations where smaller diameters generated rectangular elements, which could lead to slightly unconservative results.

By standardizing the mesh pattern across all CHS geometries, this approach delivers more stable and realistic stress and deformation outputs. Smaller tubes now exhibit behavior consistent with reference curves, ensuring that the predicted resistances remain within safe, code-compliant limits.