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Electronics and Communications
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Electronics and Communications
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Forced electro-elastic vibrations of the piezoceramic plates and rods with divided electrodes. Part II: analytical and experimental determination of the coupling coefficients and admittance’s components

Authors: Bezverkhyi, Oleksandr Ihorovych; Zinchuk, Luibov Pavlivna; Karlash, Velerii Leonidovych;

Forced electro-elastic vibrations of the piezoceramic plates and rods with divided electrodes. Part II: analytical and experimental determination of the coupling coefficients and admittance’s components

Abstract

This article analyses the forced vibrations of the non-uniform loaded piezoceramic transducers, such as plates and rods with thickness polarization and one or two bilateral electrode coating divisions, thin disks and circular rings with full or concentric and diameter divided electrodes, as well as partly electroded plates.Piezoceramic constructive elements, while performing similar or better than electromagnetic ones, are more suitable for miniaturization’s purpose. Vibrations of piezoceramic constructive elements are characterized by great electromechanical coupling between electric fields and elastic displacements or stresses. The internal physical processes nature in such bodies drives to the fact that mechanical displacements, strains and stresses, sample admittance, impedance or instantaneous power have both real and imaginary parts.Piezoelectric bars with transversal polarization became already „touchstone” in many experimental researches because their vibrations are described simple mathematical formulas, and the first overtone lies far on frequency from fundamental.The analytical relations for thin piezoceramic discs’ with partial electrodes radial vibrations and for rods’ with no uniform electric loading longitudinal vibrations are represented in a first part. The experimental data for rods with divided or partial electrodes are represented in a second part. It was established that one-dimensional rod model describes the beginning part of the rod’s vibration spectrum well. The stresses maxima for L1 – L5 modes of the in-phase loaded and shorted electrodes are related as digits 1:3:5. In shorted part electrodes case may be excited not only odd but even longitudinal modes, which are absent for full electrodes. The intensive high-frequency resonances need the additional analytic and experimental investigations.Experiment data agree with calculation well.Ref. 15, fig. 6

Статья посвящена анализу вынужденных колебаний неравномерно нагруженных преобразователей, таких как пластины и стержни с толщинной поляризацией при одном либо двух двусторонних разрезах электродного покрытия, тонкие диски и круговые кольца со сплошными и разделенными концентрическими или диаметральными разрезами электродами, а также частично электродированных пластин. Во второй части приведены экспериментальные данные для продольных колебаний стержнем с разделенными либо частичными электродами.Экспериментальные данные полностью согласуются с расчетами.Библ. 15, рис. 6

Стаття присвячена аналізу вимушених коливань нерівномірно навантажених перетворювачів, таких як пластини та стрижні із товщинною поляризацією при одному або двох двосторонніх розрізах електродного покриття, тонкі диски й кругові кільця з суцільними й розділеними концентричними або діаметральними розрізами електродами, а також частково електродованих пластин. У другій частині наведені експериментальні дані для поздовжніх коливань стрижнів-пластин з розділеними або частковими електродами.Експериментальні дані повністю узгоджуються з розрахунками.Бібл. 15, рис. 6

Keywords

Електроніка, Акустика, Electronics; Acoustics;, п’єзокерамічні пластини; розділені електроди; нерівномірне електричне навантаження; вхідний адмітанс, пьезокерамические пластины; разделенные электроды; неравномерное электрическое нагружение; входной адмиттанс, piezoceramic plates; divided electrodes; non-uniform electric load; input admittance, Электроника; Акустика;

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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