How do I determine the stiffness center of my structural system?


The RFEM program allows you to determine the center of gravity of a structural system. This is explained in this FAQ.

However, the center of gravity does not have to be necessarily confused with the stiffness center. This can be determined according to the theory of stiffening systems by using the SHAPE‑THIN program. The following webinar will also explain the practical application of the stiffness center in seismic design.

To determine the center, there is the third and final option that allows you to consider the stiffness with a stiffness model in RFEM. This will be explained soon in the technical articles of this series.


Stiffness center Earthquake Center of gravity


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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
Cross-Sections Thin-Walled

Stand-Alone Program

Properties and stresses of thin-walled and cold-formed cross-sections

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1,300.00 USD