Open Access
Table 5
Influence of lamination scheme on frequency and modal damping of the fundamental mode of LCB with L/h = 5.
| Laminate type | Lay up | Material | SS | CC | CF |
|---|---|---|---|---|---|
| Symmetric angle-ply | 30°/−45°/−45°/30° | GE | 258.83 (0.4122) | 1455.75 (0.0141) | 240.83 (0.0128) |
| CE | 353.47 (0.1872) | 2613.57 (0.0137) | 489.81 (0.0050) | ||
| Symmetric cross-ply | 0°/90°/90°/0° | GE | 263.13 (0.3831) | 1663.94 (0.0101) | 278.6 (0.0077) |
| CE | 383.81 (0.1523) | 3052.7 (0.0166) | 613.17 (0.0046) | ||
| Anti-Symmetric angle-ply | 45°/−45°/45°/−45° | GE | 263.92 (0.4174) | 1251.02 (0.0189) | 205.01 (0.0183) |
| CE | 387.24 (0.1593) | 2046.65 (0.0115) | 358.58 (0.0066) | ||
| Anti-Symmetric cross-ply | 0°/90°/0°/90° | GE | 281.26 (0.3474) | 1380.51 (0.013) | 228.23 (0.0116) |
| CE | 468.94 (0.0996) | 2385.83 (0.0129) | 438.65 (0.0054) | ||
| Balanced Laminate | 45°/30°/−30°/−45° | GE | 266.73 (0.3984) | 1282.10 (0.0179) | 210.54 (0.0172) |
| CE | 398.79 (0.1407) | 2138.18 (0.0119) | 380.24 (0.0062) | ||
| Quasi Iso-tropic | 0°/45°/−45°/90° | GE | 278.99 (0.3565) | 1293.77 (0.0164) | 212.97 (0.0155) |
| CE | 465.14 (0.1017) | 1927.61 (0.0143) | 334.58 (0.0110) | ||
| Quasi Iso-tropic | 0°/60°/−60° | GE | 271.83 (0.3740) | 1318.9 (0.0171) | 217.28 (0.0162) |
| CE | 426.17 (0.1235) | 1908.21 (0.0155) | 329.46 (0.0129) |
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