Frequency Characteristics of the Electrical Fields of the Cylindrical System of the Piezoceramic Radiators with the Baffle in the Inner Cavity

Leiko, Oleksandr; Starovoit, Yaroslav Ivanovych

doi:10.21272/jnep.8(4(1)).04018

Cited by 6 publications

(4 citation statements)

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“…equations of forced electrostatics for piezoceramics: , 33 s e , s  -respectively, the modulus of elasticity at zero electric stress, the dielectric constant at zero strain, the piezo constant, and the density of the material of the s -th p/c shell. The procedure for the simultaneous solution of the given system of differential equations by the method of coupled fields in multi-connected domains is similar to that described in [9].…”

Section: Statement Of the Problem And Its Solutionmentioning

confidence: 99%

“…The main ones are the significant dependence of their acoustic properties on the action of external factors and the inability to control screen parameters during their operation. In the first case, this forces the search for original ways of building acoustic screen structures, for example, in the form of gratings made of elastic metal shells [5] and their application [7][8][9][10]. In the second case, it becomes a serious obstacle in the construction of multifunctional location systems [1], in which there is a need to control their electroacoustic characteristics, including by changing the parameters of acoustic screens.…”

Section: Introductionmentioning

confidence: 99%

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Mechanical Dynamic Properties of a Piezo Transducer in the Presence of an Active Acoustic Screen

Bogdanov,

Derepa,

Leiko

et al. 2024

J. Nano- Electron. Phys.

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To create opportunities for operational control of the parameters of acoustic location devices, it is proposed to make their acoustic screens in the form of electroelastic systems. For devices with cylindrical piezoceramic screens, the method of coupled fields in multi-coupled regions is defined: analytical relations for mechanical fields of location devices, which take into account the mutual connections of electric, mechanical and acoustic fields in the process of energy conversion; acoustic interaction of device elements in the process of forming this energy and mutual connection between these processes. A wide numerical experiment was carried out and its results were analysed in relation to the operational management of the mechanical parameters of location devices. A number of interesting frequency regularities are established, and their physical justification is given.

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Section: Statement Of the Problem And Its Solutionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mechanical Dynamic Properties of a Piezo Transducer in the Presence of an Active Acoustic Screen

Bogdanov,

Derepa,

Leiko

et al. 2024

J. Nano- Electron. Phys.

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“…Из физических соображений ясно, что при работе плоской системы, образованной из цилиндрических пьезокерамических излучателей с параллельными продольными осями, лежащими в одной плоскости, и внутренними цилиндрическими экранами, возникает ряд эффектов взаимодействия волновых процессов. Преобразование электрической энергии в акустическую сопряжено со взаимодействием электрических, механических и акустических волновых полей [4,6]. Формирование акустических полей во внутренних полостях излучателей сопровождается взаимодействием механических колебаний их пьезокерамических оболочек со средами [3,4] и внутренними экранами излучателей [4,5].…”

Section: Introductionunclassified

“…Эти нарушения радиальной симметрии акустических и механических полей обусловливают появление в механическом поле излучателей, помимо одной собственной формы их колебаний, последующих мод. При этом амплитуды колебаний последующих мод сравнимы с амплитудой колебаний нулевой моды [4,6]. Это значит, что в данном случае происходит эффективное перераспределение «закачиваемой» в излучатели энергии между всеми модами колебаний.…”

Section: Introductionunclassified

Features of Electromechanical Acoustic Energy Conversion by Cylindrical Piezoceramic Transducers With Internal Screens in Composition of Flat Systems

Leiko¹,

Кандрачук²,

Sviatnenko³

2018

Prib. metody izmer.

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The problem of sound emission is considered by a system formed from cylindrical piezoceramic radiators with internal acoustically soft screens. Longitudinal axis of emitters lie in one plane. This system is characterized by the interaction of electric, mechanical and acoustic fields in the process of conversion electrical energy to acoustical energy and acoustic fields in the process of forming them in the environments. The purpose of the work is to determine the peculiarities of the electromechanical acoustic transformation of energy by cylindrical piezoceramic radiators with internal screens in the composition of flat systems, taking into account all types of interaction.The research was carried out by the method of bound fields in multiply connected domains with the use of addition theorems for the cylindrical wave functions. The physical fields arising from the emission of sound by such a system are determined by the joint solution of the system of differential equations: the wave equation; equations of motion of thin piezoceramic shells with circular polarization in displacements; the equations of forced electrostatics for piezoceramics at given boundary conditions, the conditions of conjugation of fields at the boundaries of the division of domains and electric conditions.The solution of the problem is reduced to the solution of an infinite system of linear algebraic equations with respect to unknown coefficients of field expansions.An analysis of the results of numerical calculations, performed on the basis of the obtained analytical relations, called to establish a number of features in the electromechanical acoustic transformation of energy by emitters in the composition of flat systems. They include: the role of acoustic interaction in the process of energy conversion; determination of the mechanism of quantitative assessment of the influence of interaction on these processes; the dependence of the degree of violation of the radial symmetry of the acoustic loading of the emitters on the amount of acoustic interaction; the appearance of multimodality of the mechanical field of emitters in the structure of the plane system and the dependence of the redistribution of energy between all modes on the degree of disturbance of the radial symmetry of the acoustic loading of the emitters.

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On the Influence of the Acoustic Interaction of Cylindrical Piezoceramic Radiators in Planar Systems on their Physical Fields

Leiko

Дерепа

Pozdniakova

et al. 2022

2022 IEEE 41st International Conference on Electronics and Nanotechnology (ELNANO)

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Frequency Characteristics of the Electrical Fields of the Cylindrical System of the Piezoceramic Radiators with the Baffle in the Inner Cavity

Cited by 6 publications

References 0 publications

Mechanical Dynamic Properties of a Piezo Transducer in the Presence of an Active Acoustic Screen

Mechanical Dynamic Properties of a Piezo Transducer in the Presence of an Active Acoustic Screen

Features of Electromechanical Acoustic Energy Conversion by Cylindrical Piezoceramic Transducers With Internal Screens in Composition of Flat Systems

On the Influence of the Acoustic Interaction of Cylindrical Piezoceramic Radiators in Planar Systems on their Physical Fields

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