I have modeled a ceiling slab that is supported on a wall. The bucket wall should only absorb normal forces. So I inserted a line hinge between the surfaces and defined it so that hinges are available for all internal forces except for those in the ux direction.

Although no hinge was defined for ux, the plate deforms without being supported by the bucket wall. Where is the mistake?


In this case, a line hinge is the right structural element to define the connection between the single surfaces. The release definitions of the line hinge, however, do not refer to the internal forces within the surface but to the local coordinate system of the line hinge.

So, if you want to transfer nothing but axial forces into the wall, do not define a hinge for the direction uz. All other hinge directions are to be set in a hinged manner.


Line hinge Wall Wall connection Ceiling Wall support


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RFEM 5.xx

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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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