Research Article
Analysis of Acoustic Characteristics of Arbitrary Triangular Prism and Quadrangular Prism Acoustic Cavities
Table 1
The convergence analysis of the first eight natural frequencies (Hz) of the triangular prism acoustic cavity.
| Mediums | M × N × L | Model sequence | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Air | 4 × 4 × 4 | 192.21 | 235.78 | 340.00 | 356.05 | 390.57 | 413.11 | 413.75 | 462.42 | 5 × 5 × 5 | 192.21 | 235.78 | 340.00 | 356.04 | 390.57 | 413.09 | 413.75 | 462.40 | 6 × 6 × 6 | 192.21 | 235.78 | 340.00 | 356.04 | 390.57 | 413.08 | 413.75 | 462.38 | 7 × 7 × 7 | 192.21 | 235.78 | 340.00 | 356.04 | 390.57 | 413.08 | 413.75 | 462.38 | 8 × 8 × 8 | 192.21 | 235.78 | 340.00 | 356.04 | 390.57 | 413.07 | 413.75 | 462.38 | FEM | 192.20 | 235.76 | 339.94 | 355.98 | 390.46 | 412.97 | 413.62 | 462.27 |
| Water | 4 × 4 × 4 | 836.70 | 1026.33 | 1480.00 | 1549.85 | 1700.14 | 1798.24 | 1801.04 | 2012.91 | 5 × 5 × 5 | 836.69 | 1026.32 | 1480.00 | 1549.84 | 1700.13 | 1798.15 | 1801.04 | 2012.79 | 6 × 6 × 6 | 836.69 | 1026.32 | 1480.00 | 1549.83 | 1700.13 | 1798.11 | 1801.03 | 2012.73 | 7 × 7 × 7 | 836.68 | 1026.31 | 1480.00 | 1549.83 | 1700.13 | 1798.12 | 1801.03 | 2012.71 | 8 × 8 × 8 | 836.68 | 1026.32 | 1480.00 | 1549.83 | 1700.13 | 1798.09 | 1801.03 | 2012.71 | FEM | 836.64 | 1026.20 | 1479.80 | 1549.60 | 1699.70 | 1797.60 | 1800.50 | 2012.20 |
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