Research Article
A Unified Approach of Free Vibration Analysis for Stiffened Cylindrical Shell with General Boundary Conditions
Table 2
Comparison of natural frequencies of stiffened cylindrical shells with simple support boundaries.
| n | m=1 | m=2 | m=3 | PRM | WPM | FEM | present | PRM | WPM | FEM | present | PRM | WPM | FEM | present |
| 1 | 1199 | 1216 | 1244 | 1223.49 | 3493 | 3536 | 3634 | 3435 | 5839 | 5907 | 6080 | 5943 | 2 | 1564 | 1635 | 1642 | 1596.01 | 2113 | 2176 | 2202 | 21535 | 3378 | 3430 | 3190 | 3555 | 3 | 4387 | 4578 | 4015 | 4356.80 | 4400 | 4573 | 4109 | 4439 | 4595 | 4788 | 4428 | 4527 | 4 | 8377 | 8781 | 7409 | 8105.72 | 8392 | 8731 | 7221 | 8468 | 8449 | 8728 | 8229 | 8538 | 5 | 13490 | 14172 | 13143 | 12979 | 13508 | 14119 | 13356 | 1387 | 13555 | 14069 | 13589 | 14389 |
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