Abstract
Transmission of electric energy through an elastic hollow cylinder by acoustic waves is investigated using the linear theories of piezoelectricity and elasticity. The elastic cylinder is between two perfectly bonded piezoelectric layers of piezoelectric ceramics with radial polarization. Power transmission is achieved through the electrical excitation of axisymmetric thickness-stretch vibrations. An exact solution is obtained which is validated by comparison with a solution from the state space method (SSM). Numerical results are presented for the transmitted voltage, power, efficiency, input admittance, and the radial distributions of displacement and stress. The effects of the load impedance and driving frequency are examined.
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