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.
Frequently Asked Questions (FAQ)
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The content of the printout report can be defined in the "Printout Report Selection" dialog box. To add cross-section data, select the check box in Table 1.3 Cross-Sections (RSTAB) or Table 1.13 Cross-Sections (RFEM). The [...] button opens the "Cross-Section Details" dialog box (Figure 1) where you can select the desired details.
A multiple selection can be made by holding down the Ctrl key (single selection) or Shift key (area selection) and clicking the relevant entries with the left mouse button (Figure 2).
The type and circumference can be defined with the "Edit Cross-Section Details" button (Figure 3). The entries affect all selected entries (highlighted in blue).
The video shows how to add the cross-section details of cross-sections 2, 5, 7, and 8 to the printout report.
This can have various causes. Your model probably has tension members and you did not deactivate the "Connect crossing members" option during the import.
Your model is unstable at the crossing points of the tension members.
If I deactivate this option, I still get an error message. Why?
The calculation parameters were probably not adjusted sufficiently in the file beforehand. Tension members often require special treatment , which can be added in the calculation parameters.
Further information to find out the causes of instabilities is described in this FAQ .
The Display navigator provides the option to save the current settings to a file in the shortcut menu. You can then import them in another view to set the settings according to the saved data.
Thus, it is not only possible to transfer the settings quickly between individual views, it is also possible to change several settings at once according to a saved configuration. A reset to the Dlubal standard is also available in the shortcut menu.
You can activate the display of the local axis system of members by right-clicking a member in the member shortcut menu or in Project Navigator - Display.
Member internal forces are displayed with reference to either the member axes or the principal axes ( FAQ 003291 ).
You can also find the definition of member internal forces in the online manual .
If the results are to be displayed at a specific location of the cross-section, the element must be divided at this location.
An element can be divided by right-clicking the element and selecting the "Split Element" function in the shortcut menu (Figure 1).
For example, if you want to determine the stress at a distance s = 32.5 mm from the start of element 1, you have to divide element 1 at this point. This is also shown in the video.
A single foundation is rotated by rotating the nodal support in RFEM/RSTAB:
- Dialog box "Edit Nodal Support" → "User-Defined Axis System: Rotated "→ [Edit] button
- Dialog box "Edit User-Defined Axis System" → Set Support Rotation As Desired (see Figure 01)
- Recalculate RF-/FOUNDATION Pro and display graphic (see Figure 02)
This change is made in the Display navigator under "Results" → "Deformation" → "Members" → "Lines", see Figure 1.
If you want to calculate the stresses in SHAPE-THIN, create at least one load case. A new load case can be created by:
- Menu "Insert" → "Load" → "New Load Case"
- Shortcut menu of the "Load Cases" navigator entry
- Input in table "2.1 Load Cases"
Furthermore, internal forces must be defined. Internal forces can be entered via:
- Menu "Insert" → "Loads" → "3.1 Internal Forces" → "Dialog Box"
- Input in table "3.1 Internal Forces"
- Import of internal forces from RSTAB or RFEM in Table "3.1 Internal Forces"
After the calculation, the stresses can be displayed graphically and in tables (Figure 01). This is also shown in the video.
The "Extended Display" button allows you to selectively evaluate the results for each stress point. It opens the "Cross-Section Properties and Stress Distribution" dialog box (Figure 01).
In the "Location" section, the current member number and location x on the member are preset. You can also select other members or x-locations in the list.
The "Stress Points" section lists all stress points of the cross-section. The "Coordinates" columns show the centroidal distances y and z, and the "Static moments" columns show the surface moments of the first degree Sy and Sz . The "Thickness t" column shows the thickness of the cross-section part that is required for the determination of the shear stresses. For closed cross-sections, the cell area A * is specified that is required for the determination of the stress due to torsional moment.
The "Stresses" section shows all stresses at the current stress point (selected in the section above). In this dialog box, too, it is possible to select a stress type by mouse click to display its diagrams in the graphic.
Stiffeners may only contain elements with a thickness t> 0 mm. If you select null elements (thickness t = 0 mm), the message shown in Figure 1 is displayed. The null elements have to be replaced by elements with a thickness t> 0 mm.
The stiffener shown in Figure 2 includes elements 8 and 3. However, element 3 has a thickness t = 0 mm, so that the message in Figure 1 is displayed. For element 3, define a thickness t> 0 mm. Alternatively, you can delete element 3 and connect element 8 directly to the buckling panel. This is also shown in the video.
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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.
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