Research Article
Vibration Properties of Submerged Sandwich Cylindrical Shell Based on Wave Propagation Approach: Analytical and Experimental Investigation
Table 6
Comparison of the natural frequencies for the sandwich cylindrical shell.
| | Case 1 | Case 2 | Case 3 | | Present method | FEM | Present method | FEM | Present method | FEM |
| | 1 | 150.2 | 151.2 | 336.1 | 334.1 | 243.7 | 241.7 | | 2 | 461.5 | 460.3 | 782.7 | 781.1 | 558.3 | 555.6 | | 3 | 776.1 | 774.5 | 1133.6 | 1132.2 | 783.8 | 781.8 | | 4 | 1043.4 | 1040.1 | 1367.9 | 1363.7 | 954.3 | 952.4 | | 5 | 1265.6 | 1261.2 | 1558.2 | 1555.0 | 1103.9 | 1101.9 | | 6 | 1453.7 | 1450.1 | 1737.5 | 1734.3 | 1227.1 | 1223.1 | | 7 | 1617.6 | 1613.6 | 1856.3 | 1854.3 | 1342.6 | 1340.4 | | 8 | 1763.9 | 1761.2 | 1993.8 | 1993.1 | 1446.0 | 1444.6 | | 9 | 1897.0 | 1892.5 | 2099.4 | 2095.2 | 1540.6 | 1540.0 | | 10 | 2020.2 | 2017.2 | 2205.0 | 2201.0 | 1635.2 | 1632.1 |
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