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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 to the program features.
Why Dlubal Software?
Modeling Approaches for Shear/Hole Bearing Connections by Means of FEAFor more detailed investigations of shear/hole bearing connections or their immediate environment, the definition of the non-linear contact problem plays an important role. This article uses a solid model to search for comparable and simplified surface models.
Options for Modeling Bored Piles
RFEM and RSTAB offer different options to model bored piles. One option is to display bored piles as single-valued supports or hinged columns. Another option is the realistic modeling while taking into account the soil by means of applying a member elastic foundation. The two following examples will describe it in detail. However, pile base resistance, skin friction and soil layers are not considered in this technical article.
Modeling a Girder GrillageThe structural analysis of a girder grillage is usually no big deal when using computer-aided calculation. There are different options to display and analyze a structure. They include, for example, the conventional way with performing structural analysis of components or modeling the entire structure.
Considering End Releases Between SurfacesThis paper explains the consideration of compliance between surfaces using line joints and line releases. Line joints and line shares take into account compliances between areas. Examples of this are joints in reinforced concrete construction or corner joints in cross-laminated timber construction.
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 Containers by Generating a 3D CellWith the function "Generate Model - Members" → "3D Cell", it is very easy to generate containers (shipping containers, office containers, mobile homes, etc.) with regular and irregular distribution of the cells.
Consideration of Possible Contact Between Overlapping MembersFrom time to time it happens that two intersecting beams overlap at a short distance.
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.
Assistance Tools for Cable StructuresRFEM and RSTAB are able to cover a large number of branches in the field of building and construction industry with their generally usable structural frame analysis and FEM programs. The design of cable structures is thus also possible in both software solutions. In the following, some assistance tools for modeling and design will be presented.
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.
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