Table 5 Frequency of the sandwich plate with a transverse stiffener and with holes in the core layer
From: Parametric study on dynamic responses of stiffened sandwich composite bridge deck panel
Natural frequency (cycle/time) for the bridge deck panels | |||||
|---|---|---|---|---|---|
Mode | TS-WH | TS-H10 | TS-H15 | TS-H20 | TS-H30 |
1 | 136.66 | 112.48 | 103.42 | 95.931 | 85.199 |
2 | 396.24 | 341.04 | 327.32 | 310.66 | 295.38 |
3 | 414.10 | 363.97 | 337.73 | 337.28 | 306.52 |
4 | 721.13 | 606.52 | 522.80 | 458.10 | 372.90 |
5 | 772.52 | 624.27 | 565.6 | 503.34 | 424.48 |
6 | 777.49 | 699.98 | 666.61 | 617.88 | 550.11 |
7 | 825.12 | 719.34 | 684.78 | 624.81 | 562.95 |
8 | 837.88 | 722.36 | 697.81 | 664.91 | 596.62 |
9 | 868.49 | 744.68 | 711.15 | 684.39 | 628.42 |
10 | 898.14 | 804.58 | 774.32 | 702.51 | 631.67 |