Artificial intelligence

Abstract: . In piezoelectric vibrators of circular configuration (disks and rings), the eigenmodes of axisymmetric oscillations, starting from the second eigenmode (at overtones), have nodal points in the form of concentric circles [3-10]. As a result of the emergence of tension and compression zones, the efficiency of the electromechanical coupling decreases. In order to avoid such a drawback, it was proposed [6] to cut the electrode coating along concentric circles. Published theoretical studies in this direction do not provide sufficient information for the analysis of this phenomenon, which is why the research presented in this article was conducted. The influence of azimuthal sections of the electrode coating on the frequencies and shapes of oscillations of piezoelectric ring plates, which are polarized along the thickness, was studied.

Keywords: ring piezoelectric ceramic plate, azimuthal sections of electrodes, analysis of frequencies and shapes of elastoelectric oscillations.

References:

1. Grinchenko V.T. Mechanics of coupled fields in structural elements in 5 volumes / Under the general editorship of A.N. Guzya. T. 5. Electroelasticity Grinchenko V.T., Ulitko A.F., Shulga N.A. – K.: Nauk. Dumka, 1989. – 280 p.
2. Dyelesan E. Elastic waves in solids. Application for signal processing. / Dyelesan E., Royer D. – M.: Nauka. 1982. – 424 p.
3. Levchenko V.V., Pavlenko V.I. Spectrum of bulk shear waves in linearly layered space.// Information and computer networks. Kyiv. University of Ukraine. 1(03). 2022. P. 92-102.
4. Levchenko V.V. Plane-polarized bulk waves in a regularly laminated medium with slipping at the interface. // Scientific notes of the V.I. Vernadsky Tavrichesky National University. Series: Technical Sciences, Volume 28 (67) No. 2 2017 P. 27-30.
5. Levchenko V.V., Simchenko S.V. Dispersion properties of bulk shear waves in a layered periodic medium of the metal-piezoelectric-dielectric type // Communication No. 4, 2024. – P. 47-51.
6. Levchenko V.V. Propagation magnetoelastic shear waves through a regularly laminated medium with metalized interfaces// Int. Appl. Mech. - 2004 - 40, No. 1 - P.97 - 10
7. Tikhonov A.N. Equations of mathematical physics, / Tikhonov A.N., Samarskyi A.A – M,: Nauka, 1972, – 736 p.
8. Shulga M.O. Resonant electromechanical oscillations of piezoelectric plates. / Shulga M.O., Karlash V.L. - K.: Naukova dumka, 2007. - 186 p.
9. Mason W.P. Piezoelectricity, its history and applications // J, Acoust, Soc, Am, – 1981, – 70, N 6, – P, 1561 – 1566.
10. Shul'ga N.A Resonant Frequencies of Electroelastic Vibrations of Piezoceramic Plates / Shul'ga N.A., Bezverkhii O.I., Mekievskii O.I. // Int. Appl. Mech. - 2010. - 46, N9. - P. 1031 - 1037.
11. Levchenko V.V. Propagation of magnetoelastic shear waves through regularly laminated medium with metalized interfaces// Int. Appl. Mech. - 2004 - 40, No. 1 - P.97 – 10.