We provide hints and tips to help you get started with the basic program RFEM.
[DE] CP 001177 | VoltAir Office Facade, Berlin, Germany
Video
First Steps with RFEM
Description
The new VoltAir office building in Berlin, Germany, includes an area of 394 ft x 213 ft and a height of about 98 ft. The building envelope consists of multiple box elements which form the interior and exterior corners.
Keywords
Dlubal customer project Office building VoltAir Building envelope Facade elements Spring stiffness Halfen channel Customer project Project with Dlubal Software Dlubal Practical Example
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This technical article analyzes the effects of the connection stiffness on the determination of internal forces as well as the design of connections using the example of a two-story, double-spanned steel frame.
New
Increased Calculation Performance by Reducing the Nodal Degrees of Freedom
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 (e.g. trusses and membrane structures).
- Which Dlubal Software programs are required to calculate membrane and tensile structures?
- I would like to analyze cable and tensile structures. Is it possible to use RFEM or RSTAB for this?
- What is the difference between the RF‑/STEEL and RF‑/STEEL EC3 add-on modules?
- When trying to calculate the design in RF-STEEL Surfaces, I receive Warning No. 1162 - Surface No. XX is of the type "Orthotropic" and cannot be designed. What does this Warning mean?
- I compare the flexural buckling design according to the equivalent member method and the internal forces according to the linear static analysis with the stress calculation according to the second-order analysis including imperfections. The differences are very large. What is the reason?
- I have created new elements in my model. However, these are not designed. What can I do?
- In spite of having defined smooth ranges, they are not considered in the design in RF‑STEEL Surfaces. What setting have I missed here?
- Which modules are responsive via the COM interface RS‑COM or RF‑COM?
- When performing a plastic calculation displays, there are stresses displayed, exceeding the yield criterion. Have I done anything wrong?
- How can I display membrane stresses in the results of RF‑STEEL Surfaces?
