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Modal analysis details chart

This dialog is accessible from the View > New chart view > Mode details menu command. This allows the user to plot various modal properties as a function of mode number.

Task​

This identifies the task from which the results are to be extracted. This must be either a modal or Ritz analysis, or a response spectrum analysis.

Output option​

The output from this is a bar chart with the result as a function of mode. The options that can be output are selected from:

  • Participation factor
  • Rotational participation factor
  • Effective mass
  • Effective inertia

And if the task is a response spectrum task:

  • Modal multiplier
  • Spectral acceleration
  • Elastic base shear

Participation factors and effective mass/inertia are plotted for all three directions (X, Y and Z). The modal multiplier, spectral acceleration and elastic base shear are plotted for each response case.