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Comparison of first eight natural frequencies of SP-PSC predicted by two models under CCCC BCs.
| Modes | mode 1 | mode 2 | mode 3 | mode 4 |
| 3D-FEM |
 656.2 Hz |
 1231.4 Hz |
 1297.4 Hz |
 1764.2 Hz |
| 2D-EPM |
 669.6 Hz (2.04%) |
 1307.0 Hz (6.14%) |
 1131.0 Hz (1.01%) |
 1857.1 Hz (5.26%) |
| Modes | mode 5 | mode 6 | mode 7 | mode 8 |
| 3D-FEM |
 2243.7 Hz |
 2294.6 Hz |
 2753.4 Hz |
 2817.7 Hz |
| 2D-EPM |
 2215.9 Hz (1.24%) |
 2235.3 Hz (1.99%) |
 2689.8 Hz (2.31%) |
 2694.9 Hz (4.36%) |
