• MATHEMATICAL MODELLING OF PIEZOELECTRIC DISK TRANSFORMER WITH RING ELECTRODES IN PRIMARY ELECTRICAL CIRCUIT

    Mathematical Modeling, Vol. 2 (2018), Issue 3, pg(s) 105-107

    Thanks to its unique properties piezoceramics has applications in various fields of engineering and technology. Disk piezoelectric devices are widely used in the elements of information systems. Mathematical model of piezoceramic disk transformer with ring electrode in primary electrical circuit is constructed. An estimate is obtained and calculated and experimental curves of the frequency dependence of the modulus of transformation coefficient of piezoceramic disk transformer with ring electrode in primary electrical circuit are compared in the work. As a result of research of real device’s mathematical model a set of geometrical, physical and mechanical and electrical parameters of a real object can be determined which provides realization of technical parameters of piezoelectric functional element specified in technical specifications. The cost of the saved resources is the commercial price of the mathematical model.

  • CALCULATION OF PARAMETERS OF TENSELY DEFORMED STATE OF DISK PIEZOELEMENTS WITH SURFACES PARTIALLY COVERED BY ELECTRODES

    Machines. Technologies. Materials., Vol. 12 (2018), Issue 9, pg(s) 362-366

    A mathematical formulation of the boundary problems of mathematical physics is made, sequential solution which allows describing the stress-strain state and the transfer characteristics of the piezoelectric elements with surfaces partial covering by electrodes. The set of formulated boundary problems makes mathematical content of energy-power method of analysis of the physical condition of the piezoelectric elements in the regime of forced oscillations under the influence of an external source of electrical energy. The proposed sequence of computational procedures can be used in the study of forced oscillations of microelectromechanical structures.