Failing Support Conditions for Contact Surfaces

Tips & Tricks

In order to create a surface model with failing supports close to reality, there is a new option ‘Failure if contact perpendicular to surfaces failed’ available for contact solids under ‘Contact Parallel to Surfaces’ as of RFEM version 5.03.

Thus, the load case ‘Wobbling’ of the modeled chair can be calculated close to reality.

Since the chair legs are represented as members, it is possible and also reasonable to use a model with a node support. Such nonlinearity (‘Failure of all, if PZ' negative’ in this case) is also available in RFEM 5 and RSTAB 8.


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RFEM Main Program
RFEM 5.xx

Main Program

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

Price of First License
3,540.00 USD
RSTAB Main Program
RSTAB 8.xx

Main Program

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

Price of First License
2,550.00 USD