Abstract
Piezoceramic short hollow cylinders and annular disks operating in the extensional mode of vibration are typically used where the thickness is small compared to its lateral dimensions. For a thin ring, strain is along the circumferential direction and the mechanical system is considered as one dimensional. But it is not clear as to what extent a ring can be considered as thin. This study calculates the electromechanical parameters of thick rings under different modes of polarization using the energy method. An analytical formulation is presented and expressions for the internal energies and the electromechanical parameters are derived by analyzing the mechanical system of vibration under different polarization. The resonance frequencies, effective coupling coefficient and correction factors for the various electromechanical parameters under different modes of polarization as a function of thickness along the radial direction are presented.
Published Version
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