The structural analysis software RFEM 6 is the basis of a modular software system. The main program RFEM 6 is used to define structures, materials, and loads of planar and spatial structural systems consisting of plates, walls, shells, and members. The program also allows you to create combined structures as well as to model solid and contact elements.
RSTAB 9 is a powerful analysis and design software for 3D beam, frame, or truss structure calculations, reflecting the current state of the art and helping structural engineers meet requirements in modern civil engineering.
Do you often spend too long calculating cross-sections? Dlubal Software and the RSECTION stand-alone program facilitate your work by determining section properties of various cross-sections and performing a subsequent stress analysis.
Do you always know where the wind is blowing from? From the direction of innovation, of course! With RWIND 2, you have a program at your side that uses a digital wind tunnel for the numerical simulation of wind flows. The program simulates these flows around any building geometry and determines the wind loads on the surfaces.
Are you looking for an overview of snow load zones, wind zones, and seismic zones? Then you are in the right place. Use the Geo-Zone Tool to determine quickly and efficiently snow loads, wind speeds, and seismic data according to ASCE 7‑16 and other international standards.
Would you like to try out the capabilities of the Dlubal Software programs? You have the opportunity to do so! The free 90-day full version allows you to thoroughly test all our programs.
You can take advantage of the free email support that is available to all users of the Dlubal Software products. Or simply chat with Mia, our AI assistant: she awaits your questions at the bottom right of our website.
However, preferential treatment by the support team or hotline support by phone (also via online support using Internet video conference) requires a Service Contract (Basic or Pro) for the respective program family.
Furthermore, you can find help on our website under the following topics:
RFEM and RSTAB use a variation of the subgrade reaction modulus method. The relation to stiffness modulus ES is not possible.
In RFEM, a multi-parameter foundation model has been implemented. This can be used to carry out a very realistic settlement calculation.
The problem, however, is to find precise values for the parameters Cu,z, Cv,xz, and Cv,yz. For this, you can use the Geotechnical Analysis add-on (for RFEM 6) or the RF-SOILIN add-on module (for RFEM 5): the subgrade parameters are calculated from the loads and the data of the geotechnical report (stiffness modulus or modulus of elasticity and Poisson's ratio, specific weights, layer thicknesses) for each individual finite element using a nonlinear method. These parameters are load-dependent and influence the behavior of the structure. The results of this iterative process are realistic settlements and internal forces in the structure.
In RFEM, it is possible to define a surface of the Membrane type (see the image). The calculation is then done automatically according to the large deformation analysis.
For the modeling of membrane structures, we recommend the Form-Finding add-on (for RFEM 6) or the RF-FORM-FINDING add-on module (for RFEM 5).
Use the "RUS-Tool" for transferring the software license.
In the attached document (see Downloads), you will find a link to download the tool and detailed instructions.
For working with RFEM and RSTAB, we recommend a graphics card that accelerates the OpenGL functions on the hardware side. This is the case with all current graphics cards.
We recommend cards equipped with an NVIDIA graphics processor. However, RFEM and RSTAB do not necessarily need CAD high-performance graphics cards (NVIDIA Quadro ...).
The drivers of the graphics cards must always be kept up to date.
The drivers of mainstream graphics cards (NVIDIA GeForce ...) are better tuned by the driver to different computer configurations, which is why there are far fewer problems with these than with CAD cards. We do not recommend graphics solutions that are integrated into the chipset or main processor (Intel HD xxxx, G xx, Qxx).
Notebooks are often equipped with two graphics chips; a power-saving Intel HD chip integrated into the processor, and an additional powerful graphics chip (for example, from NVIDIA or AMD). In this case, it is necessary to ensure that RFEM and RSTAB use a powerful graphics chip.
The lines in a .dxf file can be imported as lines or members. You can select the "Create Members" option in the "Main" tab of the import dialog box (Image 01).
When importing members, the names of layers are transferred as cross-section names, and the first predefined material is assigned. If a cross-section of the Dlubal cross-section library and a material from the Dlubal material library are recognized from the layer name, they are transferred. The layer name must be specified in the format [Cross-Section Name]$[Material Name] (for example, IPE 300$S235).
The import of lines/members is shown in the video.