Table 4 Comparison of the natural frequencies [Hz] from experimental modal analysis (EMA), finite element analysis (FEA) and analytical (AN) analysis for λ=1.0403 and R f =80 mm
From: Non-contact experimental methods to characterise the response of a hyper-elastic membrane
Mode | (m, n) | α nm | EMA | FEA | AN | Diff [%] |
|---|---|---|---|---|---|---|
1 | (0, 1) | 2.405 | 80.87 | 78.28 | 78.28 | 3.20 |
2 | (1, 1) | 3.832 | 132.66 | 124.73 | 124.72 | 5.98 |
3 | (2, 1) | 5.136 | 180.33 | 167.15 | 167.16 | 7.31 |
4 | (0, 2) | 5.520 | 193.59 | 179.65 | 179.66 | 7.20 |
6 | (0, 3) | 8.654 | 316.39 | 281.54 | 281.67 | 11.01 |