#### Further Information

In addition to our technical support (e.g. via chat), you’ll find resources on our website that may help you with your design using Dlubal Software.

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• ### When starting PLATE-BUCKLING as a stand-alone program or as an add-on module within RFEM/RSTAB, the 'from RFEM' or 'from RSTAB' field remains grayed out.

New FAQ 004330 EN

If the add-on module PLATE-BUCKLING is not opened as a stand-alone version, but via RSTAB or RFEM, the panels (c/t parts of a member cross-section), as well as the respective load cases in PLATE-BUCKLING of the RSTAB or RFEM Models, can be loaded (see picture).

In case that no suitable cross-sections of PLATE-BUCKLING will be found in the model file of RFEM/RSTAB, the field for importing the buckling fields remains inactive.
• ### Is it possible to design tapered members or trapezoidal panels with the FE-BEUL add-on module?

New FAQ 004310 EN

With the PLATE-BUCKLING add-on module, you can only calculate rectangular buckling panels.

The panel is entered via 1.1 of the add-on module. Alternatively, the panel can also be created from an existing RFEM or RSTAB file by selecting the respective c/t-part.
• ### When opening a file of the RF-/PLATE-BUCKLING add-on module, the input data are not transferred and the default values are preset. What is the reason?

FAQ 003490 EN

The add-on module RF-/PLATE-BUCKLING is not downward compatible. Please open the file with the same version as when you created the file or with a newer version. Previous versions can be downloaded via the link below this FAQ.
• ### In PLATE‑BUCKLING, the reduction factor due to column buckling χc is calculated using the modified slenderness of the sheet metal ${\overline{\mathrm\lambda}}_{\mathrm p}$. Why is it not calculated using the slenderness of the equivalent compression member ${\overline{\mathrm\lambda}}_{\mathrm c}$ ?

FAQ 003366 EN

RF-PLATE-BUCKLING performs the plate buckling analysis in compliance with Chapter 10 "Reduced Stress Method" of EN 1993‑1‑5. According to EN 1993‑1‑5, 10 (5) a), it is necessary to determine all reduction factors with the modified slenderness ratio of the sheet metal ${\overline{\mathrm\lambda}}_{\mathrm p}$ according to Equation (10.2).
• ### I have purchased the programs RFEM and RSTAB. However, I can only see RFEM (or RSTAB) in the Download section in my Dlubal Account. Why?

FAQ 003337 EN

Whether the download of RFEM or RSTAB is displayed or not in the Download section of your Dlubal Account, depends on whether you have a service contract for the respective product or not.

If a service contract has been concluded for the respective product, the links for this product are visible.

If no service contract has been concluded, no links are visible.

If you purchase RFEM or RSTAB without the service contract at a specific time, you are entitled to use this program version. If you need the download link for the purchased program version, you can download it on our homepage in the "Previous Program Versions" section.

• ### Is it possible to use the trial version of RFEM 5 on a virtual machine?

FAQ 003260 EN

Unfortunately, it is not possible to run any single-user licenses on virtual machines. Licensing is neither possible with the USB dongle nor with a softlock license.

The test or trial version of RFEM 5 or RSTAB 8 is a time-limited version that is controlled by a softlock. Therefore, the trial version of RFEM 5 or RSTAB 8 cannot be tested on a virtual machine.

In general, it is possible to operate a licensed version of RFEM 5 or RSTAB 8 on a virtual machine. However, you would need a network license for this.

The same applies to the test versions of the stand-alone programs SHAPE‑THIN, RX‑TIMBER, PLATE‑BUCKLING, CRANEWAY, and COMPOSITE‑BEAM.

• ### How can you specify in PLATE-BUCKLING, whether it shall comprise a rigid or non-rigid stiffener (end post) when calculating the reduction factor at shear buckling?

FAQ 002923 EN

In the Details, the PLATE-BUCKLING provides a choice between a rigid and non-rigid stiffener (end post) to specify the shear buckling reduction factor (see Figure 1).
• ### Is there a possibility to select "bars" and to apply the geometry as buckling field and its internal forces into the module?

FAQ 002906 EN

Yes, that is possible. If the add-on module FE-BEUL is not opened as a stand-alone variant but via RSTAB / RFEM, the loading fields (c / t parts of a bar cross-section) as well as the respective load cases can be read in FE-BEUL of the RSTAB / RFEM model (see Image).
• ### I have to install several program packages from Dlubal on my computer. Is it possible to install all program packages in one click?

FAQ 002799 EN

With one click, you can not install the Dlubal products. However, there are tools available to make the installation considerably more efficient.

Place the program in any folder and save the Dlubal installation packages in the same folder or subfolders.

Start installer.exe by double-clicking it. You are then asked which products you want to install and can install them one by one without the need of further mouse clicks.

• ### I use the add-on module PLATE-BUCKLING and need more detailed information on how the critical buckling stress for buckling behavior is calculated. The stiffeners end before the edges. Is the eigenvalue of the buckling analysis calculated as a member with the effective plate width?

FAQ 002793 EN

If your buckling stiffeners are not defined within the complete length of buckling panel, the PLATE-BUCKLING program will automatically generate this stiffness as equivalent member incl. effective width and performs eigenvalue analysis by the BUCK Add-on Module. The result of it is the critical buckling stress of the member and thus of the stiffness. The length of the equivalent member is the stiffener length itself. It is currently not possible to display the internal results in detail.

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If not, contact us via our free e-mail, chat, or forum support, or send us your question via the online form.

#### First Steps

We provide hints and tips to help you get started with the main programs RFEM and RSTAB.

#### Wind Simulation & Wind Load Generation

With the stand-alone program RWIND Simulation, wind flows around simple or complex structures can be simulated by means of a digital wind tunnel.

The generated wind loads acting on these objects can be imported to RFEM or RSTAB.

#### Your support is by far the best

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I would like to pay a compliment to your support team. I am always impressed how quickly and professionally the questions are answered. I have used a lot of software with a support contract in the field of structural analysis, but your support is by far the best. ”