Is there a possibility in RFEM to consider friction for the horizontal reactions of  surface support?


For surface supports, this option is only available if a non-linearity in the local z direction has also been defined (failure if contact stress in z is negative/positive). In the dialog box where you can edit the non-linearity, there is the option 'Friction in plane xy'.

Figure 01 - Definition of Non-linearity 'Friction'

This option works as shown in the graphic dialog box: The support in x and y direction is only completely assumed when the contact stress Tau (contact stress Sigma by friction coefficient) is reached. It has to be reduced linearly before this.

In order to use this option, it is necessary to define a support in the horizontal directions. It can be defined as fixed or with an elastic spring. If the spring is defined with 0, no support is considered even when a friction coefficient is entered.


Friction Non-linear Surface support Friction coefficient Coefficient of friction


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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

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