Table 7 The first ten natural frequencies (Hz) of the [0°/90°/0°] laminated plate-trapezoid cavity coupled system.
BC | Object | Medium | Mode order | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | |||
SSSS | Plate | Vacuo | 102.05 | 124.37 | 183.56 | 282.46 | 396.66 | 408.07 | 417.51 | 437.75 | 497.32 | 586.29 |
Plate-ITC | Air | 104.73 | 109.30 | 136.73 | 179.99 | 245.32 | 278.66 | 362.39 | 393.62 | 405.07 | 409.78 | |
Water | 16.23 | 35.58 | 65.91 | 110.23 | 121.87 | 127.45 | 140.27 | 164.50 | 170.04 | 203.81 | ||
Plate-RTC | Air | 104.44 | 107.54 | 134.33 | 179.95 | 237.43 | 278.70 | 352.32 | 393.62 | 405.08 | 410.36 | |
Water | 16.25 | 35.65 | 66.09 | 110.53 | 121.91 | 127.58 | 140.51 | 164.86 | 170.48 | 204.31 | ||
CCCC | Plate | Vacuo | 227.71 | 249.22 | 303.92 | 400.31 | 537.82 | 618.67 | 631.12 | 661.06 | 713.28 | 718.60 |
Plate-ITC | Air | 120.62 | 224.27 | 243.20 | 248.05 | 303.27 | 357.51 | 400.03 | 424.11 | 446.28 | 467.73 | |
Water | 37.02 | 64.88 | 99.63 | 148.53 | 203.07 | 211.12 | 213.95 | 227.04 | 254.28 | 295.75 | ||
Plate-RTC | Air | 116.58 | 222.33 | 237.54 | 247.93 | 302.54 | 349.15 | 398.11 | 426.06 | 441.09 | 465.87 | |
Water | 37.05 | 64.96 | 99.78 | 148.77 | 203.09 | 211.19 | 214.30 | 227.19 | 254.52 | 296.14 | ||
