Research Article
A Unified Formulation for Free Vibration of Spherical Cap Based on the Ritz Method
Table 5
Natural frequencies (Hz) of the tested spherical cap using different methods.
| | Mode number (n, m) | Current method | Experiment | Inaccuracy (%) | FEM | Inaccuracy (%) |
| | (1,2) | 5778.6 | 5788.5 | 0.17 | 5775.9 | 0.05 | | (2,2) | 6055.3 | 6072.2 | 0.28 | 6052.5 | 0.05 | | (1,3) | 6310.8 | 6323.1 | 0.19 | 6303.5 | 0.12 | | (2,3) | 6439.7 | 6455.2 | 0.24 | 6432.3 | 0.11 | | (3,3) | 6581.7 | 6608.8 | 0.41 | 6573.9 | 0.12 |
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