Research Article
Vibration and Instability of Rotating Composite Thin-Walled Shafts with Internal Damping
Table 4
Modal dampings of cantilever composite box beam:
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| Mode | Damping | Present |
Reference [18] | | | |
| First flapping | 0.64 | 0.65 | 0.65 | 0.65 | Second flapping | ā | 0.69 | 0.69 | 0.67 | First sweeping | 0.68 | 0.68 | 0.68 | 0.68 | Second sweeping | ā | 0.85 | 0.85 | 0.9 | First torsional | 2.89 | 2.89 | 2.89 | 2.89 | Second torsional | 2.33 | 2.92 | 2.92 | 2.89 |
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