FAQ 004122 EN-US

10/07/2019

Thomas Günthel Results RFEM RSTAB

How can I determine the limit load of a system with a postcritical analysis?

Answer

Currently, there is no direct way to determine the limit load. It is important that there are also several different states and thus that there can be several local limit loads.

You can assign load steps to a structure and retroactively view the individual load steps and thus find a load factor near a post-critical failure (depending on the number of load steps).

In the attached model, 20 load steps and saving of the intermediate results have been set (Figure 01). In Figure 02, the load step 10 is displayed as the last load step before the post-critical failure, and in Figure 03, the first load step after the post-critical failure is visible, whereby the deformation is significantly higher.

Keywords

Post-critical failure Postcritical analysis Limite load

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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

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The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions

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