Abstract
The energy trapping of thickness-shear vibrations that are excited by parallel electric field in a partially polarized piezoelectric-ceramic plate is analyzed by the finite element method (FEM), and characteristics of the thickness-shear-mode trapped-energy resonators for vibratory gyroscopes are theoretically revealed. The calculated results obtained by FEM agree well with the measured results with respect to the displacement and vibration energy distributions. It is shown from the results that the vibrational energy of trapped-energy modes is almost confined to the central region of a partially polarized piezoelectric-ceramic plate and the displacement distribution of the mode can be varied by adjusting electrode dimensions.
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