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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AnswerThe surface type "Trajectory" is suitable for this. With it, you can select the path or the guideline and assign a cross-section. The procedure is described in the video.
AnswerTo be able to consider this nonlinearity, you can use the "Partial Effect" function (see Figure 01). In this way, you can define the limit moment beyond which no more moments are absorbed.
AnswerIn the RF-/STEEL add-on module, a comparison stress design is performed according to von Mises. An elastic stress design (EL-EL) is performed. In RF-/STEEL EC3, a classification is carried out before the design. If the cross-section is classified as class 1 or class 2, the design is performed against plastic limit internal forces. An EL-PL design is performed. If you do not want to use the plastic load reserves, you can switch the design to EL-EL in the details of the RF-/STEEL EC3 add-on module. The results are then comparable with RF-/STEEL.
AnswerPlease send us the diagnostic file so that we can look into the license issue. You can create the file under [Help → Authorization → Diagnostics] (see Figure 01). To do this, simply start the program in the demo version.In RX-TIMBER, you can create this file under [Help → System Diagnostics] (see Figure 02).
AnswerUnfortunately, the division of Quadrangle surface can not be performed as easily as planar surfaces. The procedure is shown in the video. To obtain two surfaces, either delete and create the surface again, or modify the boundary lines of the surface and recreate the second surface.
AnswerThese lines represent the local torsion rotation (see Figure 01). By default, only torsion rotations φx with normalized values greater than 0.2 are displayed. This ensures that the graphic is clear. The graphical representation is controlled directly in the add-on module (see Figure 02).
In RF-/CONCRETE Columns, the column is designed as a "structural component".When displaying the results "Bending", "Shear Force" and "Bending - Fire Resistance", the maximum value of the design criterion is output as a single value at the governing location (x-location) of the respective design. For example, at the column base, column head, or in the center of the column.If the result display "Maximum Design Criterion" is selected, the maximum value of all design criteria is displayed across the entire "structural component" (column).
AnswerYou must authorize the program to the full version on the affected computer and save the project before it can be opened elsewhere.
AnswerIn this case, it is worth taking a look at the stress points in the cross-section details. If they are not accessible (grayed out), no stress points have been defined in SHAPE-MASSIVE and a design is not possible. In SHAPE-MASSIVE, the option "Stresses in stress points" must be activated in the general data. After recalculating and saving, the cross-section can now be designed in the RF-/STEEL add-on module.
AnswerThe internal forces and deformations are determined according to the second-order analysis for flexural-torsional buckling taking into account 7 degrees of freedom. For a linear calculation of deformations, a vertical/horizontal load results in only one vertical/horizontal deformation. Since the internal forces refer to the deformed system and it is a nonlinear analysis, this is not valid for the second-order analysis for flexural-torsional buckling.
The deformations in the shear center can be checked in RSTAB and RFEM with the RF-/FE-LTB add-on module (see Figure 02). The deformations that additionally result from the displacements or rotations can only be controlled with a surface model in RFEM.
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