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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A single foundation is rotated by rotating the nodal support in RFEM/RSTAB:
- Open the "Edit Nodal Support" dialog box → select "User-defined axis system: Rotated"→ click the [Edit] button.
- Open the "Edit User-Defined Axis System" dialog box → set support rotation as you want (see Figure 01).
- Recalculate in RF‑/FOUNDATION Pro and display graphic (see Figure 02).
This change can be done in the Display navigator under "Results" → "Deformation" → "Members" → "Lines," see Figure 01.
After generating a surface from a pipe member, this is no longer connected to the original nodal support. A line support is recommended for the newly created lines at the pipe start, see Figure 01.
Also, the nodal load is no longer connected to the original member. In this case, a crossing of rigid members is recommended for the load introduction, see Figure 02. Thus, the load is transferred to the boundary lines of the surface.
You can model several single-span beams in a row by inserting releases:
- Activate "Release" in Window "1.2 Geometry", see Figure 01.
- Edit the releases in the "Releases" tab that becomes active.
In this case, the following procedure is recommended:
- Open the Project Manager and search for the project, to which you want to add the file, in the project navigator on the left.
- Right-click this project and open Windows Explorer (see Figure 01).
- Drag and drop the desired file and then close Windows Explorer.
- Thus, the file is assigned to the desired project.
In the case of surfaces with variable thickness, the plane consists of three nodes. The result is a wedge, not a cone, as desired. Therefore, it is recommended to divide the quarter-circular ring into separate uniform surface segments:
- Divide the inner arc line using n intermediate nodes.
- Divide the outer arc line using n intermediate nodes.
- Add individual lines, delete the original surface, and redefine the individual surface segments.
- Add individual lines, divide the original surface using integrated lines.
- Define variable thickness as desired for each individual segment.
A nodal support can be rotated as follows:
- Open the "Edit Nodal Support" dialog box, see Figure 01.
- In the "Support Axis System" section, select the "Ridig" option for "User-defined axis system."
- Click the "Edit User-Defined Axis System" button.
- In the "Edit User-Defined Axis System" dialog box, set the options for the support rotation as desired, see Figure 02.
The button for selecting the connecting surface becomes active as soon as you enter or select the integration width b2, see Figure 01.
The moments mx and my (Figure 01) refer to the local surface axis system and would therefore only occur in the case of loading in the local z‑direction of the surface.
In this case, the solution is to create a result beam in the direction of the desired single-span beam and to obtain the bending moments from the corresponding member internal forces (Figure 02).
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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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