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Dipl.-Ing. (FH) Gerhard Rehm
2019-03-14

Surface Releases Separating Overlapping Surfaces

Can I use surface releases to separate two overlapping surfaces?

Answer:

You can use the surface releases, but you need to separate the overlapping part with an own surface. Overlapping surfaces should be avoided in general and can be checked by the "Model Check" (Tools → Model Check → Overlapping Surfaces). Please watch the video file (see the link below) to see the approach. As an alternative, you can add a "Contact Solid" between two surfaces.

Overlapping Surfaces Released by Surface Release
Overlapping Surfaces Released by Surface Release
Author

Mr. Rehm is responsible for developing products for timber structures, and he provides technical support for customers.

Downloads
RFEM Model File | Overlapping Surface
488 KB
Video | Release Overlapping Surface in RFEM
9.08 MB
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This article describes and explains the influence of bending stiffness of cables on their internal forces. Furthermore, the text provides information on how this influence can be reduced.
KB 001848 | Timber Column Design as per 2018 NDS Standard in RFEM 6
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Product Features
Feature 002423 | Displaying Results in Solids

The results of solid stresses can be displayed as colored 3D points in the finite elements.

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The number of degrees of freedom in a node is no longer a global calculation parameter in RFEM (6 degrees of freedom for each mesh node in 3D models, 7 degrees of freedom for the warping torsion analysis). Thus, each node is generally considered with a different number of degrees of freedom, which leads to a variable number of equations in the calculation.

This modification speeds up the calculation, especially for models where a significant reduction of the system could be achieved (for example, trusses and membrane structures).

Extended Display of Surface Strains

Display extended strains of members, surfaces, and solids (for example, the important principal strains, equivalent total strains, and so on) in the Project Navigator - Results in RFEM as well as in Table 4.0.

For example, you can display governing plastic strains when performing the plastic design of connections with surface elements.

Export RFEM or RSTAB Models to *.glb or *.glTF Format

RFEM and RSTAB models can be saved as 3D glTF models (*.glb and *.glTF formats). View the models in 3D in detail with a 3D viewer from Google or Babylon. Take your VR glasses, such as Oculus, to "walk" through the structure.

You can integrate the 3D glTF models into your own websites using JavaScript according to the instructions (as on the Dlubal website Models to Download): "Easily display interactive 3D models on the web & in AR" .

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