Laminated plate-type acoustic metamaterials with Willis coupling effects for broadband low-frequency sound insulation

Gu, Jintao; Tang, Youheng; Wang, Xiaole; Huang, Zhenyu

doi:10.1016/j.compstruct.2022.115689

Cited by 28 publications

(3 citation statements)

References 63 publications

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“…The material outperforms the conventional double homogeneous plate in the wide low frequency band (208-850 Hz) and has superior sound transmission loss in the wide low frequency band (248-1624 Hz), with the ability to achieve the highest sound insulation of 70 dB, according to the experimental results. Gu et al [126] suggested a laminated plate-type acoustic metamaterial (LPAM), which is made up of two layers of porous material (melamine foam) and three layers of constrained plate-type acoustic metamaterial sandwiched together. It has been shown by numerical analyses and experimental validation that this composite structure performs better in wideband low-frequency (100-1500 Hz) noise suppression.…”

Section: Composite Structure Of Porous Materials and Acoustic Metamat...mentioning

confidence: 99%

Research progress of noise reduction of composite structures of porous materials and acoustic metamaterials

Huang,

Yang,

Talukder

et al. 2024

Phys. Scr.

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Noise pollution is an important problem affecting people's lives and work quality. In the current noise reduction materials, the porous sound absorption materials usually only haveagood sound absorption effect for medium and high -frequency sound waves, and the sound absorption effect for low -frequency sound waves is relatively weak. However, in recent years, the research on acoustic metamaterials has made a breakthrough which can effectively absorb or isolate low-frequency sound waves. Therefore, researchers propose to combine porous sound-absorbing materials with acoustic metamaterials to form a composite structure, that broadens the frequency range of noise reduction, so as to achieve the goal of full-frequency domain noise reduction. This paper first introduces the research progress of porous materials and acoustic metamaterials, and then introduces the research progress of composite structures that are made of porous materials and acoustic metamaterials. Finally, the application prospect of the composite field of porous sound-absorbing materials and acoustic metamaterials are summarized.

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Section: Composite Structure Of Porous Materials and Acoustic Metamat...mentioning

confidence: 99%

Research progress of noise reduction of composite structures of porous materials and acoustic metamaterials

Huang,

Yang,

Talukder

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…The finite element method and measurement through an acoustic impedance tube, along with the reverberant sound insulation of large-scale samples (11 × 9 unit cells per piece), showed that the larger the sample size, the closer the STL results were to those of a single unit cell with Floquet-Bloch boundary conditions. The laminate acoustic metamaterial (LPAM) composed of multi-layer acoustic metamaterials sandwiched with porous materials effectively isolated broadband low-frequency noise [130]. Yang et al proposed a multi-layer coupled plate acoustic metamaterial (MPAM) consisting of a metamaterial plate unit, a high-density layer (FB1), and a low-density layer (FB2).…”

Section: More Complex Large Size Multi-layer Acoustic Metamaterialsmentioning

confidence: 99%

“…the STL results were to those of a single unit cell with Floquet-Bloch boundary conditions. The laminate acoustic metamaterial (LPAM) composed of multi-layer acoustic metamaterials sandwiched with porous materials effectively isolated broadband low-frequency noise [130]. Yang et al proposed a multi-layer coupled plate acoustic metamaterial (MPAM) consisting of a metamaterial plate unit, a high-density layer (FB1), and a lowdensity layer (FB2).…”

Section: More Complex Large Size Multi-layer Acoustic Metamaterialsmentioning

confidence: 99%

Research Progress on Thin-Walled Sound Insulation Metamaterial Structures

Zhang,

et al. 2024

Acoustics

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Acoustic metamaterials (AMs) composed of periodic artificial structures have extraordinary sound wave manipulation capabilities compared with traditional acoustic materials, and they have attracted widespread research attention. The sound insulation performance of thin-walled structures commonly used in engineering applications with restricted space, for example, vehicles’ body structures, and the latest studies on the sound insulation of thin-walled metamaterial structures, are comprehensively discussed in this paper. First, the definition and math law of sound insulation are introduced, alongside the primary methods of sound insulation testing of specimens. Secondly, the main sound insulation acoustic metamaterial structures are summarized and classified, including membrane-type, plate-type, and smart-material-type sound insulation metamaterials, boundaries, and temperature effects, as well as the sound insulation research on composite structures combined with metamaterial structures. Finally, the research status, challenges, and trends of sound insulation metamaterial structures are summarized. It was found that combining the advantages of metamaterial and various composite panel structures with optimization methods considering lightweight and proper wide frequency band single evaluator has the potential to improve the sound insulation performance of composite metamaterials in the full frequency range. Relative review results provide a comprehensive reference for the sound insulation metamaterial design and application.

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Sound insulation properties of plate-type acoustic metamaterial structures with different types of resonators

Zhou,

Tiong,

2024

Appl. Phys. A

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Laminated plate-type acoustic metamaterials with Willis coupling effects for broadband low-frequency sound insulation

Cited by 28 publications

References 63 publications

Research progress of noise reduction of composite structures of porous materials and acoustic metamaterials

Research progress of noise reduction of composite structures of porous materials and acoustic metamaterials

Research Progress on Thin-Walled Sound Insulation Metamaterial Structures

Sound insulation properties of plate-type acoustic metamaterial structures with different types of resonators

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