Research on the Sound Absorption Performance of Acoustic Metamaterial Structures with Resonant Cavity Plate
To improve the acoustic performance of traditional plate structures,a new type of acoustic metamaterial structure with resonant cavities is designed.The research results indicate that the resonant hammer has almost no effect on the sound absorption performance of the plate type acoustic metamaterial.The thickness of the upper and lower panels with holes in the resonant cavity sandwich panel,or the wall length and thickness of the periodic square wall panel structure of the cube,have a significant regulatory effect on the acoustic effect of the overall structure.As these parameters increase,the sound absorption peak of the structure moves towards low frequencies.
acoustic metamaterials with resonant cavity platessound absorption coefficientlow frequency
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