Determination of Internal Forces for Plates: Torsional Stiffness

Tips & Tricks

In a plate with full torsional stiffness, a significant part of loads is transferred by torsional moments. If it is not possible to set the positive effect of this additional stiffness in the calculation (for example, due to a butt joint of a precast plate in the stiffness area), you have to reduce the torsional stiffness.

For this, use the ‘Orthotropic’ stiffness of a surface in RFEM. In the K33 text box, you can specify the factor D33 for torsional stiffness about the axes x' and y' in the stiffness matrix.

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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