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Storey fundamental frequency

Last modified by Iwona Budny Bjergø on 2022/01/24 10:35

Contents


Concept

In FEM-Design, vertical storey fundamental frequencies can be calculated regardless of material type.

Requirement

In order to run the Storey fundamental frequency calculations, following objects need to be defined in the model:

  • Storeys (as the frequency is obtained at selected storeys)
  • Mass (using the Mass or Load case – mass conversion)

Analysis

In Calculations dialog, select the Storey fundamental frequency, then in the right hand side dialog select the storeys that should be calculated.

fund-freq-set CORRECTED.png

Results

The results are stored under Storey fundamental frequency. Following type of results are available:

Vibration shapes (translational and rotational displacements): for bars and shells

Vibration-shapes CORRECTED - 2.gif

Level masses

fund-freq-result CORRECTED.png

Results can also be listed in tabular form

fund-freq-list.png

 

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