If you are working with nonlinearities, this feature is suited very well to support you. For example, you can specify nonlinearities of member end releases (yielding, tearing, slippage, and so on) and supports (including friction). Furthermore, you can use special dialog boxes to determine the spring stiffnesses of columns and walls based on the geometry specifications.
![Figure 1: RFEM Model of Silo](/en/webimage/039649/3496511/001.png?mw=512&hash=6541d24fd11ea035fb0ac9b8e3ce028590b0228c)
![Windbreak Porous Fabric Structure in RFEM & RWIND](/en/webimage/036418/3433707/1002.jpg?mw=512&hash=61f0c6c01178418ff58a7634ab1f489e04e01422)
![KB 001759 | Consideration of Second-Order Effects in RFEM 6 and RSTAB 9](/en/webimage/034042/3377316/2022-09-08_14-32-04.png?mw=512&hash=f234df60c72ad9e85c0f1a2210bf9dc0cede3bda)
![Image 1: Specific Parameters of Nonlinear Elastic Soil Material Model](/en/webimage/040222/3508620/2023-04-27_EN.png?mw=512&hash=7306cf5703c93779b07140d3ba5c912eab870a2f)
![Feature 002421 | Displaying Result Values on Isolines](/en/webimage/031922/3325367/Isolinien_EN.jpg?mw=512&hash=7128e1d3476cede4a52641e47eb2532fdaa44a70)
Result values for deformations, internal forces, stresses, and so on, can be displayed on the isolines.
![Feature 002005 | Member and Support Nonlinearities](/en/webimage/021815/3086613/2005_de.png?mw=512&hash=8771ffa8988f3549a804fea8cf3f5310d1c6370e)
If you are working with nonlinearities, this feature is suited very well to support you. For example, you can specify nonlinearities of member end releases (yielding, tearing, slippage, and so on) and supports (including friction). Furthermore, you can use special dialog boxes to determine the spring stiffnesses of columns and walls based on the geometry specifications.
![Isometric Display of Spatial Yield Surface (Source: Explanatory Report on Research Project "DDMaS - Digitizing the Design of Masonry Structures"](/en/webimage/030993/3299694/53_(1).png?mw=512&hash=7193b10f53ed10727f51caee9a094b21a1e153cd)
Did you know that To calculate masonry structures, a nonlinear material model has been implemented in RFEM. It is based on the approach of Lourenco, a composite yield surface according to Rankine and Hill. This model allows you to describe and model the structural behavior of masonry and the different failure mechanisms.
The limit parameters were selected in such a way that the design curves used correspond to a normative design curve.
![Slab-Wall Connection in RFEM](/en/webimage/030994/3487602/002395_EN.png?mw=512&hash=644ecd61d980cbe03cb0ea80db64f0e549dc147c)
RFEM allows you to use a special line hinge to model the special properties of the connection between the reinforced concrete slab and masonry wall. This limits the transferable forces of the connection depending on the specified geometry. You guess right: This means that the material cannot be overloaded.
The program develops interaction diagrams that are applied automatically. They represent the various geometric situations and you can use them to determine the correct stiffness.
What are Line Hinges and Line Releases?