RESEARCH OF THE RESONANCE PROPERTIES OF HELMHOLTZ RESONATORS

Keywords: Helmholtz resonator, resonance frequency, resonator in an acoustically rigid shield, Helmholtz resonator modeling, natural frequency

Abstract

The object of researchProcess of oscillation of the Helmholtz resonators.

Investigated problemDifferences between some formulas for the calculation of the resonant frequency of the Helmholtz resonator and the most accurate of them were established. The effect of acoustic design on the Helmholtz resonator frequency value and influence of the attached air mass between the neck of the Helmholtz resonator and free field were investigated.

The main scientific resultsAs a result of a numerical experiment, analytical ratios were obtained that allow obtaining the most accurate results. One of them is the most optimal for calculating the resonator resonant frequency in a free field, and in this case, less than 1 % inaccuracy level can be achieved, given that r/R<0.25. Other one allows to achieve the same low inaccuracy level for a resonator located in an acoustically rigid shield, given that r/R<0.25. Research has shown that the location of the resonator in an acoustically rigid shield leads to significant changes in natural resonance frequency value.

The area of practical use of the research resultsThe detailed research of previously unexplored properties of resonators will make it possible to improve the algorithms for the development of metamaterials, to discover additional parameters with which it is possible to control the characteristics of the metamaterial.

Scope of the innovative technological productSuch resonators are used as the basic elements in metamaterials, as structural elements of the sound-absorbing panels, in acoustic mufflers.

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Author Biographies

Yuliia Kopytko, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

Department of Acoustic and Multimedia Electronic Systems

Vitaliy Zaets, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

Department of Acoustic and Multimedia Electronic Systems

Sergey Naida, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

Department of Acoustic and Multimedia Electronic Systems

Vitaliy Didkovskyi, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

Department of Acoustic and Multimedia Electronic Systems

Anastasiia Damarad, National Technical University of Ukraine "Igor Sikorsky Kyiv Polytechnic Institute"

Department of Acoustic and Multimedia Electronic Systems

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Published
2020-08-31
How to Cite
Kopytko, Y., Zaets, V., Naida, S., Didkovskyi, V., & Damarad, A. (2020). RESEARCH OF THE RESONANCE PROPERTIES OF HELMHOLTZ RESONATORS. ScienceRise, (4), 10-16. https://doi.org/10.21303/2313-8416.2020.001389
Section
Innovative technologies in industry