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Useful Program Features
The Knowledge Base includes technical articles on a wide array of structural analysis and design topics.
These articles are intended to help you navigate through the Dlubal programs, learn efficient tips and tricks, and provide further insight into the program features.
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Load Combinations in Timber Structures for European and American Timber Standards
In addition to determine loads, there are some particularities concerning the load combinatorics in timber design which have to be considered. Contrary to steel structures where the largest loading results from all unfavorable actions, in timber construction, the strength values are dependent on the load duration and the timber humidity. Special characteristics have to be considered as well for the serviceability limit state design. The following article discusses the effects on the design of wooden elements and how this is possible with RSTAB and RFEM.
Documenting Graphical Results of Reinforcement in RF-CONCRETE SurfacesRFEM offers different options to display results graphically which have been determined in RF-CONCRETE Surfaces. This article gives an overview of these options.
Considering End Releases Between SurfacesThis article deals with considering end releases between surfaces with line hinges and line releases. Examples are joints in reinforced concrete structures or frame joints in cross-laminated timber structures.
Modeling Joints as Surface ModelWith RF-/FRAME-JOINT Pro, it is possible to design frame joints according to DIN 18800 or Eurocode 3. When considering non-standardized joints or taking a closer look at the joint and its behavior, it is recommended to use a modeling as surface model. The following article will show how such a model is created in principle.
Modeling and Bending Design of Point-Supported Flat SlabThis article describes how a flat slab is generated as 2D model in RFEM and the loading is applied according to Eurocode 1.
Modeling of Semi-Rigid Composite Beam Made of Timber as Surface ModelThere are several options to calculate a semi-rigid composite beam. They differ primarily in the type of modeling. Whereas the Gamma method ensures a simple modeling, additional efforts are required when using other methods (e.g. shear analogy) for the modeling which are, however, offset by the much more flexible application compared to the Gamma method.
FEM Modeling Approaches of Rigid ConnectionsEspecially when the adjacent area of connection points should be analyzed, the geometry or load of the connection does not correspond to the standard specifications and/or a structure should be analyzed with an FE model (for example in plant engineering), it is necessary to evaluate the connections in detail on the FE model.
Singularities in Design of Reinforced Concrete Surfaces
Singularities occur in a limited area due to the concentration of the stress-dependent result values. They are conditioned by the FEA methodology. In theory, the stiffness and/or the stress in an infinite size concentrate on an infinitesimal small area.
Modeling Prestressed Bolt Connection
When modeling surface models, such as a frame joint or similar structures, there is always the question of how to model a prestressed bolt connection. In this case, it is always necessary to find a compromise between the practicable and detailed solution. The following article describes the modeling procedure of such a connection based on the joint diagram calculation method.
Methods of Supporting Plates by Columns
In the case of plate structures, it is always necessary to consider the realistic definition support conditions. Depending on the way of defining the flexibility of the supports, clear differences may occur in the results.
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