Table 2.
The comparison of the resonant frequencies for the first pair of sensors, the ABAQUS, and the theory.
| Mode | Theory (Hz) | FEM (Error %) | PVDF (Error %) | Strain Gauge (Error %) | |
|---|---|---|---|---|---|
| 1 | 58.84 | 59.2 (0.63) | 58.01 (−1.4) | 58.01 (−1.4) | |
| 2 | 368.8 | 370.8 (0.55) | 367.3 (−0.4) | 366.6 (−0.5) | |
| 3 | 1,032.8 | 1,038.2 (0.50) | 1,028.3 (−0.4) | 1,028.3 (−0.4) | |
| 4 | 2,023.8 | 2,033.5 (0.48) | 2,028 (0.2) | 2,026.6 (0.1) | |
| 5 | 3,345.2 | 3,361.1 (0.47) | 3,352.3 (0.2) | 3,355.3 (0.3) | |
| 6 | Torsional | 4,121.3 | 4,017(−2.5) | 4,064.5(−1.3) | |
| 7 | 4,997.4 | 5,019.3 (0.44) | 5,018 (0.4) | 5,010 (0.2) | |
| 8 | Torsional | 6,868.8 | 6,714 (−2.2) | 6,814 (−0.8) | |
| 9 | 6,979.6 | 7,007.2 (0.39) | 7,007.3 (0.4) | 7,018 (0.6) | |
| 10 | 9,292.3 | 9,321.5 (0.31) | 9,297.3 (0.05) | 9,295.3 (0.03) | |
| 11 | Torsional | 9,616.3 | 9,533 (−0.8) | 9,631.3 (0.15) |