Time or Frequency Evaluation Method—Dynamic Analyses
In defining the time or frequency evaluation method, you indicate the way you want Creo Simulate to treat the measure as calculated at various time steps or frequency steps.
For example, you can use one of the time or frequency evaluation methods to instruct Creo Simulate to report the maximum value encountered among the steps as a whole. If, instead, you wanted to review the maximum value for each step individually, you could select a different time or frequency evaluation method.
You can select from the following time or frequency evaluation methods, depending on which measure component and spatial evaluation method you choose:
• RMS—Calculates the RMS (root mean square) value of the measure over the frequency range and reports this value in the summary file. This option is only available if you selected At Point as the spatial evaluation method.
• Apparent Frequency—Determines the effective frequency of a PSD output by integrating over the frequency range and reports this value in the summary file.
Creo Simulate calculates apparent frequency by averaging the number of zero-crossings for the PSD output. The apparent frequency is equivalent to the frequency of a sine wave that crosses zero the same number of times.
This option is only available if you select At Point as the spatial evaluation method.
• At Time—Calculates the value of a measure at a time you specify. The measure is calculated for dynamic time analyses.