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
AnswerYes, it works. For this, it requires the activation of the elastic bearing in the mask "Edit nodal bearing". On the basis of some input parameters such as type of bearing, column shape, material and the column height, the program determines the springs of the column (see Fig. 1).
AnswerIt is quite likely that the high deformations are caused by the consideration of shrinkage and the horizontal storage in the model.The shrinkage is taken into account internally on the load side as elongation, in which connection a failure due to the prevention of shrinkage is also possible. If the shrinkage is prevented by a non-displaceable horizontal bearing, forces are created which can lead to failure of the concrete and thus to a significant increase in deformation or even instability of the model.In this context, it is important that when using the nonlinear deformation calculation, the boundary conditions of the model are mapped as realistically as possible.
AnswerIt is correct that singularities in the FE calculation also affect the results of the determination of the load increase factor β by means of the sector model.Smoothing ranges introduced in the RFEM model have no influence on the ß determination in RF-STANZ Pro.If the results in the critical round section are influenced by the singularities, you have the option of specifying the load increase factor ß yourself. To do this, you can display the "Shear force in sectors" in the result navigator of the RF-STANZ Pro results (see Fig. 01). The maximum value of all sectors is used to determine the β coefficient.You can now estimate in terms of engineering whether this value should be used to determine the load increase factor or not. If not, you as a user can evaluate the progression of the shear force in the sectors (see Fig. 01) and determine the load increase factor ß yourself (averaged value of the considered sector / average value over the entire round cut).In RF-STANZ Pro you have the option of directly specifying the load increase factor ß in the input dialog "1.5 Punching nodes". See Figure 02. Thus, you can handle values resulting from a singularity by individually specifying the load increase factor β.Important is:The program can not deliver automatic for this. These points must always be checked and evaluated individually by the planner.
Line releases are defined by an additional line automatically generated by the software. The theoretical background of line releases is a also described in this article.
For a detailed explanation of this alert a model is attached to this FAQ.
In this model for the line release 3 a definition node has to be defined. Because if the software would generate an additional virtuall node surface 2 would be destroyed.
Imagine the following sceanrio.
You have 4 surfaces 1,2,10,14 (picture 2).
If you define a line release to line 3 it`ll look like shown in picture 3.
As the surface 2 would be destroyed by that as line 6 is the same for surface 2 and 14 the line 6 has to start at the node 3 and at the generated node (picture 4).
This is where you need the definition node and in case it is not defined the software gives the alert.
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.
Your support is by far the best
“Thank you very much for the useful information.
I would like to pay a compliment to your support team. I am always impressed how quickly and professionally the questions are answered. In the industry of structural analysis, I use several software including service contract, but your support is by far the best.”