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Table 1 The natural frequency of the plates with the different alignment of stiffeners

From: Parametric study on dynamic responses of stiffened sandwich composite bridge deck panel

Natural frequency (cycle/time) for the bridge deck panels
Mode CSWS CS1TS CS2TS CS3TS CS1LS CS2LS CS3LS CS1IS CS2IS CS3IS
1 128.4 136.66 126.7 133.36 143.62 132.68 145.15 203.82 170.48 186.69
2 312.45 396.24 501.31 522.85 296.48 240.74 237.9 412.69 302.05 380.9
3 387.43 414.1 520.81 542.05 358.39 339.06 327.64 433.02 376.44 390.19
4 767.73 721.13 680.07 668.67 556.04 583.19 467.14 670.46 629.67 598.99
5 817.42 772.52 712.53 674.63 605.18 616.2 526.59 686.41 640.31 617.36
6 818.71 777.49 741.89 675.82 827.21 691.79 683.52 804.07 656.8 633.07
7 849 825.12 862.89 807.28 852.42 826.79 795.42 841.19 694.32 699.13
8 851.04 837.88 923.03 859.56 865.01 839.2 806.65 864.62 789.57 753.68
9 910.41 868.49 940.49 915.3 934.52 882.47 869.42 893.99 829.27 765.7
10 985.87 898.14 957.9 923.37 957.82 890.55 882.31 923.15 869.39 806.38