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  1. Stresses and Classification

    Classification and Ultimate Limit State Design of SHAPE-THIN Cross-Sections

    When designing a steel cross-section according to Eurocode 3, it is important to assign the cross-section to one of the four cross-section classes. Classes 1 and 2 allow for a plastic design, classes 3 and 4 are only for elastic design. In addition to the resistance of the cross-section, the structural component's sufficient stability has to be analyzed.

  2. Figure 01 - Option "Save the results of all load increments"

    Iterative RFEM Calculation with Load Increments

    The calculation in RFEM is usually carried out in several calculation steps, the so-called iterations. It is then possible to consider particular characteristics of the model such as objects with nonlinear functions. In addition, by using the iterative calculation, nonlinear effects are taken into account which result from changes in deformation and internal forces in case of the second-order analysis or when considering large deformations (cable theory). In case of complex models, geometric linear calculations are usually not sufficient.

  3. Figure 01 - Model with FE Mesh

    Modeling and Bending Design of Point-Supported Flat Slab

    This article describes how a flat slab is generated as 2D model in RFEM and the loading is applied according to Eurocode 1.
  4. Figure 01 - Opening Block Manager with Catalogue Elements

    Modelling of Tower with Block Manager

    Lattice towers represent typical applications in steel construction. Examples for this special type of truss structures are antenna and overhead line towers, or columns for wind power stations, cable cars, and supporting frame constructions. The modelling can be done individually in RFEM and RSTAB by entering various tower elements. Furthermore, you can use different copy functions and parameterized input options. However, this procedure normally requires considerable effort. It is more comfortable to model such structures using pre-fabricated catalogue elements provided by the Block Manager. Those elements are automatically stored in the database during program installation. Thus, you can use tower segments, platforms, antenna brackets, cable ducts et cetera as parameterized building blocks for generating diverse tower structures.
  5. Figure 01 - System and Loading

    Nonlinear Analysis in RF-/CONCRETE

    When designing reinforced concrete components according to EN 1992‑1‑1 [1], it is possible to use nonlinear calculation methods to determine internal forces for the ultimate limit state and the serviceability limit state. In this case, the internal forces and deformations are determined with respect to their nonlinear behaviour. The analysis of stresses and strains in cracked state usually provides the deflections, which clearly exceed the linearly determined values.

  6. Figure 01 - System and Loading According to [1]

    Columns Subjected to Tensile Stress in RF-/JOINTS Steel - Column Base

    The product range of Dlubal Software contains various modules for design of steel and timber connections. The RF-/JOINTS Steel - Column Base add-on module allows you to analyse footings of hinged or restrained steel column bases. For the cost-effective and safe design of the column base, the fastener selection, foundation geometry, and material quality are crucial.

  7. Figure 01 - Local Member Axes x, y, and z

    Member Rotation Angle

    In spatial structures, a member position plays an important role in terms of determining internal forces. The orientation of member axes can be defined either by a global cross-section rotation angle or by a specific member rotation angle. These two angles are added in order to determine the position of the main axes of a member in a 3D model.

  8. Figure 01 - System and Loading According to [1]

    Rigid Columns in RF-/JOINTS Steel - Column Base

    A structural analysis does not only determine and design internal forces and deformations. It also ensures that the forces and moments in a structure are generated in a reliable way and applied to the foundation. Dlubal Software provides a wide range of products for structural analysis and design of steel and timber connections. The RF-/JOINTS Steel - Column Base add-on module allows you to design footings of hinged and restrained column bases. The design can be performed for both column base plates with or without stiffeners.

  9. Curved Cross-Section Parts in SHAPE-THIN

    Curved Cross-Section Parts

    In addition to arcs and circles, SHAPE‑THIN 8.xx allows you to model the following curved cross‑section parts.

  10. Cross-Section Information of Section Areas

    Cross-Section Information of Section Areas

    The cross‑section properties software SHAPE‑THIN provides the option to combine the cross‑section parts in a ‘section’ and display the cross‑section properties. Thus, it is possible to determine the values of the individual components in a composite cross‑section.

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