15.1.3.4.2. Reviewing Results for Cyclic Symmetry in a Harmonic Response or FSI Harmonic Acoustics Analysis

When simulating cyclic symmetry in a Harmonic Response (Full) analysis, the same results are available as results in Harmonic Response analyses that involve full symmetry with the exception of Linearized Stresses and Fatigue results (which are underdefined). In addition, purely elemental results, such as Volume, Kinetic Energy, and Potential Energy display only in the base sector. To verify a result is elemental, examine the Worksheet (from the Solution object) for Solution Quantities and Result Summary > Available Solution Quantities.

Even though only one cyclic sector is analyzed, results (excluding elemental results) are valid for the full symmetry model. You can control the post-processing and display of cyclic results using the following options of the Cyclic Solution Display category of the Solution folder:

  • Number of Sectors: This option controls the extent the model is expanded from the raw solution. The value indicates how many sectors should be processed, displayed and animated. Results generate more quickly and consume less memory and file storage when fewer sectors are requested. To set the value as Program Controlled, enter zero; this value reveals the full expansion.

  • Starting at Sector: Selects the specific sectors to include within the expansion. For example, if Number of Sectors is set to 1, sectors 1 through N are revealed one at a time. To set the value as Program Controlled, enter zero; this value reveals the specified number of sectors from sector 1 onwards.

In addition, individual result objects contain a Starting at Sector property. For it to display, the Number of Sectors property above must be set to a value greater than 0. Furthermore, this property overrides the setting of the above Starting at Sector property of the Solution object. This property gives you the ability to define different starting sectors for each result object.


Note:  Extremum values (for example, Minimum, Maximum) correspond only to the portion of the model selected by these properties (under Cyclic Solution Display).


Unexpanded One Sector Model Display

Expanded Full Symmetry Model Display


Note:
  • Probe results are not available for Harmonic Response (Full) analyses when cyclic symmetry is used.

  • Selecting the Solution object or a result object and then selecting the Frequency checkbox in the Tabular Data window displays the following bar graph. The Harmonic Index values in Tabular Data are zero if the loading is cyclic.

  • When Non-Cyclic loads are present in the model, the Harmonic Index is not shown. When you request a result at a frequency, the cyclically expanded result is displayed which accounts for the contribution from all the available harmonic index at the requested frequency. This is similar to the output from the Mechanical APDL /CYCEXPAND command.

  • When Non-Cyclic loads are present in the model, the Sector Number property is displayed. You can set this property to view the frequency and phase response results on the desired sector.