On the ‘Knowledge Base’ page, you can find many technical articles and tips & tricks that may help you to solve your structural engineering tasks using Dlubal Software.
Frequently Asked Questions (FAQ)
Printout Report SHAPE-THIN PLATE-BUCKLING Stand-Alone RFEM 2D RFEM RSTAB 2D RSTAB COMPOSITE-BEAM CRANEWAY
FAQ 002316 EN Support & Training RF-DYNAM Pro - Natural Vibrations DYNAM Pro - Natural Vibrations RF-DYNAM Pro - Forced Vibrations DYNAM Pro - Forced Vibrations RF-DYNAM Pro - Equivalent Loads DYNAM Pro - Equivalent Loads
In RF‑DYNAM Pro ‑ Natural Vibrations, it is possible to import the geometrical stiffness matrix. You can use it to consider the second‑order analysis.
Find detailed information and an example in the attached PDF.
Second-order analysis.pdf (471 kB)
How can I define which internal forces and deformations are displayed by default in the result diagrams?
FAQ 002310 EN Results RSTAB RFEM
First, open the result diagram of a member, line support, section or line. Then select the desired internal forces and deformations.
Finally, right-click the navigator and select Save Check Boxes State.
Use Refresh Check Boxes State (this button is now available) to cancel your settings.
I performed an export from RSTAB or RFEM to the IFC format. When importing the IFC file to the CAD software, however, nothing is displayed. What could be the reason?
FAQ 002307 EN Import / Export & BIM RSTAB RFEM
The IFC interface is structured in different areas, the so-called Views. The export from RSTAB/RFEM is performed in StructuralAnalysisView. At the same time, it is possible to transfer the structural model with member elements, concentrated line and member loads, supports as well as support conditions, load cases, etc. Importing an IFC file generated from RSTAB/RFEM is only possible in the third-party software if it also supports StructuralAnalysisView.
When starting the program I get the warning message No. 47 “The Dlubal product key does not match your license. Please either install a key with the correct license number or load the correct authorization file (*.ini)”.
FAQ 002305 EN Licensing & Authorisation RSTAB RFEM SHAPE-THIN RX-TIMBER PLATE-BUCKLING CRANEWAY
This problem cannot be generally solved without further background knowledge. Therefore please contact our support at firstname.lastname@example.org and send us the following information:
- We need the diagnostics file (authorization.txt). You will receive it if you follow the instructions shown in figure 2. Just run the program in demo mode.
- Please specify which program you are running (RFEM, RSTAB, RX-TIMBER, etc.).
- If you are trying to access a network dongle, please inform us if the computer you are using is located on the same network as the licence server, or if a VPN connection is used to communicate with the server.
FAQ 002304 EN General RFEM RSTAB
If you prepare comments, they are saved in the current configuration. You can save this configuration and then import it to another computer.
FAQ 002303 EN Licensing & Authorisation RFEM RSTAB
The SOFTLOCK (SL) has to be activated once on a PC. Please use the attached instructions.
By activating the SL, it is connected to the PC by mainboard ID and hard disk ID.
If an SL is activated on a PC, no formatting of the hard disk or a reinstallation of the operating system must be carried out. No change of mainboard or hard disk is allowed either.
If you have to change anything on this PC, transfer the SL to another PC in advance. Please also have a look at the instructions from page 2 onwards.
Software Licencing.pdf (838 kB)
FAQ 002302 EN Licensing & Authorisation RFEM RSTAB
You have to activate the NET-SOFTLOCK (Net-SL) once on a PC, server or a virtual server. Please use the attached instructions (Installation-NET-Softlock).
By activating the NET-SL, it is connected to the PC by mainboard ID and hard disk ID. For virtual machines, the SL is connected by using the CPU characteristic and the virtual MAC address.
If a NET-SL is activated on a PC, no formatting of the hard disk or reinstalling of the operating system should be carried out. No change of mainboard or hard disk is allowed either.
If a NET-SL is installed on a virtual machine, please make sure that the virtual MAC address is static and that the CPU characteristic cannot be changed. Virtual machines must not be copied (cloned) or moved.
If you have to change anything on this PC or the virtual machine, transfer the NET-SL to another PC or virtual machine in advance by using the attached instructions (REHOSTING-EN).
Installation-NET-Softlock.pdf (221 kB)
REHOSTING-EN.pdf (617 kB)
FAQ 002297 EN Modeling | Structure RFEM
The most effective way in this case is to use the function New Graphically...
You can open this function by using the DataNavigator iin the shortcut menu of the line releases (see picture) or the menu Insert → Model Data → 1.26 Line Releases.
The procedure is as follows:
- Select the function New Graphically...
- Select/define the release
- Select released elements
- Press enter to confirm the selection of elements
- Press enter to close the dialog box
- Select line (line release will be created)
- Press enter to open the dialog box again
- See points 2 and 3
How can I enter concrete covers of individual reinforcement layouts independently when designing reinforced concrete surfaces?
FAQ 002294 EN Add-on Modules RF-CONCRETE 2D RF-CONCRETE NL RF-CONCRETE Deflect
It is only possible to enter concrete covers of individual reinforcement layouts independently if no serviceability limit state design is performed.
As soon as you have selected a load for the serviceability limit state design in Table 1.1 in RF-CONCRETE Surfaces, the reinforcement layouts will be coupled together.
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