Table 1 Comparison of calculated natural frequencies using linear and quadratic interpolation
| Natural frequency with linear elements | Natural frequency with quadratic elements | Percentage difference (%) |
|---|---|---|
| 310.4 | 310.3 | 0.03 |
| 970.5 | 969.6 | 0.09 |
| 1077.3 | 1076.8 | 0.05 |
| 2084.3 | 2081.7 | 0.12 |
| 2246.9 | 2243.3 | 0.16 |
| 2722.7 | 2718.7 | 0.15 |