Research Article
Nonlinear Vibrations of 3D Laminated Composite Beams
Table 2
Natural frequencies (Hz) of clamped simply supported and simply supported simply supported beams of asymmetric cross ply [0°/90°/0°/90°].
| | Mode | Clamped Simply Supported | Simply Supported Simply Supported | | Present | Reference [8] | Reference [32] | Present | Reference [8] | Reference [33] |
| | 1 | 793.3 | 784.9 | 818.5 | 557.9 | 558.9 | 557.8 | | 2 | 2244.2 | 2223.9 | 2271.1 | 1904.7 | 1907.7 | 1892.6 | | 3 | 4062.8 | 4038.6 | 4077.9 | 3782.6 | 3787.2 | 3730.9 | | 4 | 6060.0 | 6031.5 | 6071.0 | 5819.4 | 5824.8 | 5669.5 | | 5 | 8131.6 | 8104.8 | 8132.9 | 7974.9 | 7980.5 | 7672.0 |
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