Entering in RFEM
A surface release can be defined using the menu "Insert" → "Model Data" → "Surface Releases" or using the project navigator data "Model Data" → "Surface Releases." First, select the original surface, which is a basis for the surface release, graphically in the work window by using the "New Surface Release" dialog box. Then, define a suitable surface release type, that is, in which local directions the objects are released or nonlinearities such as failure for only one direction. Similarly, you can also define inclined releases by means of spring constants. Finally, define the released objects.
The number of degrees of freedom in a node is no longer a global calculation parameter in RFEM (6 degrees of freedom for each mesh node in 3D models, 7 degrees of freedom for the warping torsion analysis). Thus, each node is generally considered with a different number of degrees of freedom, which leads to a variable number of equations in the calculation.
This modification speeds up the calculation, especially for models where a significant reduction of the system could be achieved (e.g. trusses and membrane structures).
- How can I additionally model welds for the connection of two surfaces with a contact solid?
- When entering a new material using the Diagram definition type, the first row is locked. How can I define the material?
- Are the models and presentations from Info Day 2017 freely available, and can you send them to me?
- What information is transferred when exporting the nonlinear stiffness? Can I display the exported values graphically?
- Is it also possible to design flat slabs in RF‑TENDON and RF‑TENDON Design?
- Is there any possibility in RFEM to consider friction for the horizontal reactions of a surface support?
- What is the difference between the materials Isotropic Plastic 1D and Isotropic Nonlinear Elastic 1D?
- Is it also possible to perform a deformation analysis in cracked state for a 2D model in RF‑CONCRETE Surfaces?
- I obtain different results when comparing the deformation analysis in the RF‑CONCRETE add-on modules and another calculation program. What could be the reason for this?
- I would like to define a line support with ineffective tension and apply the tension force on this line by using a nodal support instead. Why does the line support still receive a tension force?
Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements