Research Article
A Semianalytical Approach for Free Vibration Characteristics of Functionally Graded Spherical Shell Based on First-Order Shear Deformation Theory
Table 4
Comparison of the natural frequencies for the isotropic spherical shell.
| | Mode no. | n, m | Present | Experimental | Error (%) | FEM | Error (%) |
| | 1 | 1, 2 | 5778.6 | 5788.5 | 0.17 | 5775.9 | 0.05 | | 2 | 1, 3 | 6310.8 | 6323.1 | 0.19 | 6303.5 | 0.12 | | 3 | 2, 2 | 6055.3 | 6072.2 | 0.28 | 6052.5 | 0.05 | | 4 | 2, 3 | 6439.7 | 6455.2 | 0.24 | 6432.3 | 0.11 | | 5 | 3, 3 | 6581.7 | 6608.8 | 0.41 | 6573.9 | 0.12 |
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