FAQ 002065 EN

1 December 2017

Robert Vogl Calculation RFEM 5.xx

What does the warning "Supported nodes No. 1-4 lie on supported lines as well" mean?

Answer

The warning should prevent doubled support conditions set by mistake – once as degrees of freedom on the node (nodal support) and once as degrees of freedom on the end point of the line (line support). A user can overlook the possible conflicting boundary conditions.

Therefore, it may be useful to define different stiffnesses for nodal and line supports when modeling surface elastic foundations (see RFEM manual, keyword "wedge of soil"). If the support conditions have been set in this way for purpose, you can close the warning message by clicking "No."

You can prevent the warning by inserting a short non-supported line before a supported node, for example.

Keywords

nodal support line support supported node support

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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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