Research Article
Vibration and Damping Analysis of Composite Fiber Reinforced Wind Blade with Viscoelastic Damping Control
Table 3
Comparison of natural frequencies and loss factors of composite laminated clamped free shell structure.
| Mode |
Damping factor of viscoelastic material = 0.2 |
Damping factor of viscoelastic material = 0.4 |
Damping factor of viscoelastic material = 0.8 | Freq. (Hz) | | Freq. (Hz) | | Freq. (Hz) | |
| 1 | 84.87 | 0.03747 | 84.89 | 0.07490 | 84.96 | 0.14942 | 2 | 123.90 | 0.02619 | 124.09 | 0.05192 | 124.82 | 0.10031 | 3 | 211.62 | 0.04058 | 211.52 | 0.08134 | 211.15 | 0.16404 | 4 | 311.41 | 0.02369 | 311.45 | 0.04736 | 311.60 | 0.09449 | 5 | 335.05 | 0.02570 | 335.10 | 0.05140 | 335.31 | 0.10267 | 6 | 388.39 | 0.03696 | 388.38 | 0.07393 | 388.33 | 0.14797 |
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