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Information × Registration Number 0217U000954, 0115U005706 , R & D reports Title Vibrations of the piezoceramic energy transducers under harmonic and unstationary perturbations considering electromechanical losses popup.stage_title Head Bezverkhyi Oleksandr Igorovych, Registration Date 21-03-2017 Organization S.P.Timoshenko Institute of Mechanics popup.description2 The fundamentals of the new computational and experimental iterative methodology for determination the coefficients of electromechanical coupling and energy loss parameters on the example of the tasks of the longitudinal vibrations of thin piezoceramic rod with transverse polarization and radial vibrations of thin circular piezoceramic plate with solid electrodes are prezented. The technique is based on a comparison of the calculated and measured amplitudes of full admittance at frequencies of its maxima and minima. The data are used in the calculation of the stress state, the mechanical displacements and the total conductivity of thin piezoceramic circular rings with different fixing conditions. A generalized approach to solving problems of forced radial vibrations of piezoceramic cylinders and spheres with regard to energy dissipation is presented, resonance frequencies and mode shapes are defined. The dependence of the amplitude values of the parameters of the electromechanical state from the loss parameters are investigated. Product Description popup.authors Григор'єва Л.О. Зінчук Л.П. Карлаш В.Л. Корнієнко В.Ф. popup.nrat_date 2020-04-02 Close