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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AnswerYes, the complete frame "Snow, Wind and Seismic Zoning Maps," including the search function, location description, and load results, can be integrated into other applications by means of the URL address.After entering the "Full Screen" mode, you receive the required URL in the browser address bar.Furthermore, the online service tool provides in the background a web service for determining the location-specific building loads. If you enter the necessary data (location, load type, load standard, and others), this web service allows you to digitally retrieve the data in order to transfer them to an external application.→ see FAQ
AnswerThe tolerance epsilon can be found in the FE mesh settings in the "General" section of the dialog box. It controls the behavior of the FE mesh generator when nodes are very close to lines. Figure 03 shows the difference. If the tolerance is greater than the distance of a node to a line, this small local difference in the mesh generation is neglected. In the case shown, the mesh of the line is deflected towards the node. In this case, the line is not ideally straight anymore. If the tolerance is smaller than the distance, a separate FE node is generated for the node.The error message appears if the distance between two adjacent nodes is smaller than epsilon and they are connected by a line (see Figure 03). In most cases, this is due to an inaccuracy in the modeling. Since the error message contains no information about the node numbers, you can use the "Identical Nodes" model check. The program searches for the nodes whose distance meets the tolerance delta. Now, you can set the tolerance value to the value of epsilon. Tthe nodes are then listed in the upper part of the dialog box.As described below, the descriptions differ depending on the case. If there is an inaccuracy in the modeling, it can be adjusted. In other cases, it is possible to further reduce the tolerance of epsilon, of course.
Please reduce the maximum distance between the node and the line in the FE mesh settings. Even with a setting of 0.001 m according to the figure, you can enter a smaller value. If the decimal places are adjusted by means of the corresponding settings, the value is also displayed completely.
Unfortunately, there is no "Split surface along selected line" feature. You can either split the surface equally or along all the integrated lines.
In order to split the surface on one integrated line only, it is necessary to temporarily manage the integrated lines manually (see Figure 01). After splitting the surface, you can enable the automatic object detection again (see Figure 02).
AnswerIt is caused by the fact that the opening was not yet integrated because the automatic object detection is deactivated for curved quadrangle surfaces.
To integrate the opening (or other objects), go to the 'Integrated' tab of the 'Edit Surface' dialog box. Use the selection buttons to selectively or completely select integrable nodes, lines, and openings (see the figure).
AnswerThe member type 'Result Member' is a virtual member without any stiffness, which can freely be arranged in the model and is used to integrate the internal forces of members, surfaces, and solids to show them as member internal forces. If used, the result evaluation of deep beams can be simplified very substantially.
By defining a cross-section for the result beam, it is possible to carry out designing in the additional modules such as RF-STEEL EC3, RF-TIMBER Pro, or RF-CONCRETE Members.
As an example, the graphic shows the determined reinforcement of window and door lintels and a split-level ceiling.
In the model, the lines and nodes lying in the plane are not integrated in the surface in the surface properties. Also when selecting the surface using "Select → Related Objects," the border lines are only selected, not the lines within the surface.
In the case of the "Select in Plane" command with "Definition of Plane via 3 Nodes," the lines are displayed as integrated in the surface, but not after creating the FE mesh. I have set the tolerances for regenerating the model as necessary.
Objects like lines and nodes are automatically integrated in a surface by default, as soon as these objects have a static function (for example, supports, load reference). Objects that are not statically relevant are not automatically integrated in the surface.
The reason is as follows: the results are not averaged at integrated lines, thus often leading to a jump in the color distribution of the results values. At statically relevant lines, this is also correct. Many integrated lines, however, are so-called construction lines, and are particularly imported when importing a DFX file.
If you select the "Integrate unutilized objects in the surface" check box in the FE Mesh Settings dialog box (see Figure), all lines will be integrated in the surface.
This message is shown if an integrated node (a node in a surface) is not located in the surface plane (Figure 01).
To solve this problem, move the node in the surface plane or delete the corresponding nodal number from the list of the objects integrated in the surface (Figure 02).
The member end rests geometrically exactly on the pipe surface, but the automatic integration of structural elements is only possible for plane surfaces. Since the end point of the member was not integrated into the pipe surface, no common FE node is created. For RFEM, the member has no connection to the pipe, thus resulting in a termination of the calculation.
You can manually integrate the member end node into the pipe surface: double-click the pipe surface to open the "Edit Surface" dialog box. In the "Integrated" tab, you can integrate the node as long as the "Automatic object detection" option is deactivated (Figure 01).
Due to the integration, the member is connected to the pipe surface. A common FE node is created and the calculation is performed successfully (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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