Table 12.
Natural frequency of resilient materials.
| Material | Dynamic Stiffness (, MN/m3) | Natural Frequency (Hz) |
|---|---|---|
| Base | 10.0 | 57.06 |
| R1 | 75.0 | 156.27 |
| R2 | 68.5 | 149.34 |
| R3 | 52.5 | 130.74 |
| R4 | 23.5 | 87.47 |
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