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Features of the electrophysical and mechanical properties of n-component ferroactive solid solutions of composition PZT-PZN-PMN

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Journal of Advanced Dielectrics 2021年第5期11卷 1-5页

作者： K.P.Andryushin I.N.Andryushina a.v.cherpakov A.v.Popov I.A.verbenko L.A.Reznichenko Research Institute of Physics Southern Federal UniversityRostov-on-Don 344090Stachki str.194Russia Institute of Mathematics Mechanicsand Computer Science named after of I.I.Vorovich Southern Federal University Rostov-on-Don 344090Stachki str.200/1Russia Institute of Mathematics Mechanics and Computer Science Southern Federal UniversityRostov-on-Don 344090 Milchakova 8aRussia

Study of the fatigue endurance and mechanical strength of solid solutions of the PZT-PZN-PMN system,modified with Ba and Sr,corresponding to the formula(Pb_(1-a_(1)-a_(2))Sr_(a_(1))Ba_(a_(1)))[Ti_(x)Zr_(y)_(1-x-y)]O_(3),with a_(1)=0.02÷0.12;Da_(1)=0.02,a_(2)=0.0036÷0.073;x=0.385÷0.430,y=0.402÷0.447 is *** is shown that the evolution of the polarization characteristics with an increase in the number of repolarization cycles,n,is characterized by two sections:slow fatigue and logarithmic *** was found that an increase in the strontium content shifts the beginning of the logarithmic stage towards to the large *** is shown that an increase in the average grain size decreases the mechanical strength.A conclusion is made about the expediency of using the obtained data in the development of devices operating in power modes.

关键词： PZT-PZN-PMN P-E loops fatigue endurance mechanical properties

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Numerical optimization of the piezoelectric generators

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Journal of Advanced Dielectrics 2020年第1期10卷 108-115页

作者： v.A.Chebanenko I.v.Zhilyaevy A.N.Soloviev a.v.cherpakov I.A.Parinov Federal Research Centre The Southern Scientific Centre of the Russian Academy of The Sciences Rostov-on-Don 344004 Russia University of Applied Sciences and Arts Northwestern Switzerland Institute of Polymer Engineering Windisch 5210Switzerland Don State Technical University Rostov-on-Don 344001 Russia Institute of Mathematics Mechanics and Computer Sciences Southern Federal UniversityRostov-on-Don 344090Russia

This paper presents the application of the Pareto-based multicriteria optimization technique to problems of increasing the efficiency of piezoelectric generators(PEGs).The optimization problem was solved for two types of generators:cantilever and *** the cantilever generator,the task was to optimize the design in such a way as to obtain the maximum output power for a given mechanical *** optimization process was divided into several stages,which significantly reduced the amount of *** task of optimizing the stack type for a given form of mechanical loading consisted in finding the geometric parameters of the generator at which the output voltage and power would be *** the result of solving both problems,sets of geometric design parameters of PEGs were obtained,on the basis of which efficient transducers can be developed for specific operating *** turned out that this technique is more suitable for optimizing the design of cantilever generators than for stack ones in given *** solution of both problems was realized using the finite element method.

关键词： PEG FEM cantilever stack multiobjective optimization

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