Following are the material properties for the aluminum shell and rubber boot:
| Material Property | Material | |
|---|---|---|
| Aluminum | Rubber | |
| Young's Modulus (N/m2) | 68.9E9 | 30E6 |
| Poisson's Ratio | .3 | .49 |
| Density (kg/m3) | 2710 | 1100 |
The water density is assumed to be 1000 kg/m3, and its speed of sound is 1500 m/s.
Following are the material properties of the piezoelectric ceramic (PZT8), where the polarization direction is along the element x axis:
| Material Property | Piezoelectric Ceramic Material | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Density (kg/m3) |
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| Elastic Moduli |
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| Piezoelectric Stress Matrix [e] (C/m2) |
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| Dielectric Permittivity (Relative) |
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