Table 2 Three first natural frequencies for all case studies
Cases | Outcomes from equations (cycles/time) | Outcomes from ABAQUS (cycles/time) | Error (%) | ||||||
|---|---|---|---|---|---|---|---|---|---|
N.F. 1 | N.F. 2 | N.F. 3 | N.F. 1 | N.F. 2 | N.F. 3 | N.F. 1 | N.F. 2 | N.F. 3 | |
Normal case | 658.7 | 1423.5 | 2270.1 | 634.3 | 1329.0 | 2082.6 | 3.6 | 6.6 | 8.2 |
Case 1 | 687.4 | 1497.5 | 2402.5 | 686.5 | 1473.4 | 2351.6 | 0.1 | 1.6 | 2.1 |
Case 2 | 719.4 | 1580.4 | 2550.3 | 725.8 | 1581.1 | 2547.4 | 0.8 | 0.06 | 0.1 |
Case 3 | 685.0 | 1477.9 | 2355.3 | 667.3 | 1400.9 | 2199.6 | 2.6 | 5.2 | 6.6 |
Case 4 | 687.4 | 1482.9 | 2362.9 | 675.5 | 1418.4 | 2228.8 | 1.7 | 4.3 | 5.6 |