Open AccessCalculation of the acoustic efficiency of smart resonant cells
Author(s) -
P. V. Pisarev,
K. A. Maksimova
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/709/4/044015
Subject(s) - resonator , acoustic impedance , acoustics , electrical impedance , absorption (acoustics) , work (physics) , piezoelectricity , materials science , computer science , physics , engineering , optics , mechanical engineering , quantum mechanics , ultrasonic sensor
In this work, numerical studies of the acoustic efficiency of prismatic resonators with adaptive neck diameters were carried out. In the process of research, the physical and mathematical models for predicting effective acoustic characteristics of a group of sound-absorbing structures cells with different neck diameters were formulated. The concept of the resonant frequency adaptive control and impedance of smart SAS cells by means of piezoelectric elements embedded into the neck is proposed. Verification of the developed numerical models has been carried out. According to the results of the numerical calculations, the dependences of the natural frequencies and sound absorption coefficients of the group of adaptive SAS cells were obtained for different variants of control modes (combinations of resonator neck diameters).