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)
Customer Support 24/7
The best way is to create the bolt as a single solid and not from several partial solids (within the hole). Then, you can arrange the surface release between the contact surfaces of the solids. In the case of a bolt connection, the setting for the surface release type would have to be defined with a nonlinearity in the uz direction.
As an alternative, you can also enter releases and spring stiffnesses for the other directions.
The corresponding example can be downloaded here.
Yes, this is possible. Silos/tanks are usually made up of one curved 2D surface. This 2D surface needs to be split into two separate 2D surfaces for the cylinder to be exported into Revit. If it is only made up of one surface, then only half of the cylinder will be exported.
To do this, create a cylinder with one single surface. Then draw a line exactly adjacent to the original line that was create perpendicular to the top and bottom of the cylinder.
Next, delete the surface and recreate two surfaces using the quadrangle tool.
This process is also demonstrated in the attached video.
The values on surfaces can be displayed in the surface grid. Please note the following points:
- Dialog box "Edit Surface," tab "Grid": Activate "User-defined" and check the distance and the grid origin, see Figure 01.
- Results navigator: Activate "Values on Surfaces," deactivate "Extreme Values," activate "In Surface Grid," see Figure 02.
Yes, a line hinge between two surfaces is sufficient, see Figure 01.
However, if the two surfaces have different geometries, you should pay attention to the information in the technical article Arrangement of Line Releases Between Surfaces of Different Sizes.
For a detailed display, it is useful to model a contact solid.
For this, it is first necessary to divide the channel section into surfaces (right-click the member → Generate Surfaces from Member). Then, the web surface or the surface of the channel section to be welded must be projected into the steel surface:
- Copy nodes and lines into the plane.
- Divide the steel surface using integrated lines (right-click the member → Divide Surface).
- Define null surfaces as boundary surfaces of the contact solid.
Figure 01 - Connection Using Contact Solid
In this case, the simplest solution is the connection between the member and the surface by means of rigid members at certain distances, see Figure 01.
If necessary, you can previously divide the member by right-clicking the member and selecting "Divide Member."
The program is not always able to automatically find the position of a punching node or the nearest edge. In this context, the error message mentioned above appears.
The problem can be solved by manual definition of the edge in the respective node.
The "common surfaces" (Column I in Window 1.5) have an informative character.
In theory, you can select or deselect the surfaces to be considered in the punching shear design, and thus shorten the critical perimeter (see the video).
It is usually not necessary to make any changes here.
Two solids adjacent to each other share the common boundary surface in the contact area. Apart from it, that is, where no other solid is adjacent, the boundary lines of the other connected surfaces are defined, see Figure 01.
When modeling, it is necessary to divide the side surface of the larger solid.
Did you find your question?
If not, contact us via our free e-mail, chat, or forum support, or send us your question via the online form.
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.
“Thank you for the valuable information.
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. ”