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Математическое моделирование колебаний, локализованных на дислокациях в пьезоэлектрических кристаллах

Математическое моделирование колебаний, локализованных на дислокациях в пьезоэлектрических кристаллах

Abstract

A mathematical model of sound oscillations, which are localized on dislocations based on the differential equation of motion of the theory of elasticity for a piezoelectric crystal with defects of the crystal structure. Expressions are obtained for frequencies of axisymmetric and spiral waves and frequency intervals that separate them from the volume of the spectrum of vibrations. The law of decreasing amplitude with increasing distance from the dislocation. It is shown that an increase in the diameter of the tube dislocation increases the number of azimuthal perturbations able to localize it.

Построена математическая модель звуковых колебаний, локализованных на дислокациях, основанная на дифференциальном уравнении движения теории упругости для пьезоэлектрического кристалла с дефектом кристаллической структуры. Получены выражения для частот осесимметричных и винтовых волн, а также частотных интервалов, отделяющих их от спектра объемных колебаний. Найдены законы убывания амплитуды колебаний с удалением от дислокации. Показано, что с увеличением диаметра дислокационной трубки возрастает азимутальное число возмущения, способного на ней локализоваться.

Keywords

ПЬЕЗОЭЛЕКТРИЧЕСКИЙ КРИСТАЛЛ, ДИСЛОКАЦИЯ, ДИСПЕРСИОННОЕ УРАВНЕНИЕ, ЛОКАЛИЗОВАННЫЕ КОЛЕБАНИЯ

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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!
0
Average
Average
Average