Ultra-broadband Noise-Insulating Periodic Structures Made of Coupled Helmholtz Resonators

Mariia Krasikova; Aleksandra Pavliuk; Sergey Krasikov; Mikhail Kuzmin; Andrey Lutovinov; Anton Melnikov; Yuri Baloshin; David A. Powell; Steffen Marburg; Andrey Bogdanov

arXiv · 2307.15216

Ultra-broadband Noise-Insulating Periodic Structures Made of Coupled Helmholtz Resonators

Mariia Krasikova·Aleksandra Pavliuk·Sergey Krasikov·Mikhail Kuzmin·Andrey Lutovinov·Anton Melnikov·Yuri Baloshin·David A. Powell·Steffen Marburg·Andrey Bogdanov

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Abstract

Acoustic metamaterials and phononic crystals represent a promising platform for the development of noise-insulating systems characterized by a low weight and small thickness. Nevertheless, the operational spectral range of these structures is usually quite narrow, limiting their application as substitutions of conventional noise-insulating systems. In this work, the problem is tackled by demonstration of several ways for the improvement of noise-insulating properties of the periodic structures based on coupled Helmholtz resonators. It is shown that tuning of local coupling between the resonators leads to the formation of ultra-broad stop-bands in the transmission spectra. This property is linked to band structures of the equivalent infinitely periodic systems and is discussed in terms of band-gap engineering. The local coupling strength is varied via several means, including introduction of the so-called chirped structures and lossy resonators with porous inserts. The stop-band engineering procedure is supported by genetic algorithm optimization and the numerical calculations are verified by experimental measurements.

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Mariia Krasikova, Aleksandra Pavliuk, Sergey Krasikov, Mikhail Kuzmin, Andrey Lutovinov, Anton Melnikov, Yuri Baloshin, David A. Powell, Steffen Marburg, Andrey Bogdanov. 2023-07-27. Ultra-broadband Noise-Insulating Periodic Structures Made of Coupled Helmholtz Resonators. https://arxiv.org/abs/2307.15216

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