Double-panel metastructure lined with porous material for broadband low-frequency sound insulation

Wang, Shuaixing; Xiao, Yong; Gu, Jintao; Hu, Chenying; Zhang, Hao; Wen, Jihong

doi:10.1016/j.apacoust.2023.109332

Cited by 15 publications

(4 citation statements)

References 44 publications

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“…This research encourages the more useful engineering application of membrane acoustic metamaterials and advances the idea of integrated design of sound absorption and sound insulation performance of multi-impedance related acoustic systems. Wang et al [124,125] suggested a double-layered metamaterial plate with a porous material lining as a composite acoustic metamaterial. A thin host plate and extra cylindrical mass blocks placed in a twodimensional square lattice make up the single layer metamaterial plate.…”

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.

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show abstract

“…Wang et al proposed a double-panel metamaterial with broadband low-frequency sound insulation, which consisted of two layers of metamaterial plates lined with porous material, as shown in Figure 12d. A semi-analytical method based on the transfer matrix method was proposed and verified by testing large samples (800 mm × 800 mm) using a reverberation chamber and a semi-anechoic chamber [124]. de Melo Filho et al introduced a local resonance structure on one panel of the double-plate cavity structure, conducted STL prediction based on the dynamic mass method, and measured the sound insulation performance of a sample (420 mm × 591 mm) by the KU Leuven Soundbox small cabin, as shown in Figure 12e.…”

Section: Composite Sound Insulation Structure Combined With Metamater...mentioning

confidence: 99%

“…(c) Description of an acoustic metamaterial sandwich pane, reproduced from [123]. (d) Unit cell and schematic of a double-panel metastructure lined with porous material and schematic of experimental environment for measurement STL, reproduced from[124]. (e) Schematic of the metamaterial configuration, reproduced from[125].…”

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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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“…Zhang (2015) studied the normal incident STL of simply supported finite plates using a single resonator. Wang et al (2021Wang et al ( , 2023 designed a double-layer plate-like metamaterial with an embedded porous material interlayer. This interlayer significantly improved the sound insulation performance of the metamaterial across wide frequency bands of oblique incidence and under diffused sound field conditions.…”

Section: Introductionmentioning

confidence: 99%

Lightweight sound insulation optimization of simply supported locally resonant plate

Zhang,

Li,

Zhao

et al. 2023

Journal of Vibration and Control

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A theoretical model of the normal sound insulation of a rectangular locally resonant (LR) plate with simply supported boundary conditions is established. The accuracy of the model is verified through comparison with finite element simulation results. Considering a 1-m2 aluminum plate as the research object, a non-dominated genetic algorithm is introduced. The algorithm optimizes the lightweight sound insulation of an LR finite plate with a center frequency band of 20–800 Hz as the optimization objective of maximum average sound insulation and minimum mass. The optimization parameters are substrate thickness and local resonance parameters (including resonator target frequency ( fobj), number of resonators, additional mass ratio, and resonator damping). Optimization results indicate that the average sound insulation fluctuates at approximately 2 dB due to changes in fobj. The results also provide an optimal solution to the algorithm. The optimal sound insulation value curve of LR plates corresponding to different surface densities of intermediate improved cases is fitted and compared with the sound insulation value of an equal-mass bare plate. Under lightweight optimization, the resonators are deemed capable of improving the local frequency band sound insulation. In contrast, the wideband average sound insulation can approximate but not surpass the insulation provided by the equal-mass bare plate. In practical applications, an LR plate that can improve the local frequency band sound insulation and ensure the overall lightweight sound insulation performance of the wide frequency band can be obtained. This can be achieved by analyzing the frequency spectrum of optimal points in the lightweight sound insulation optimization process. Relevant research can provide a basis for the evaluation and design of the low-frequency sound insulation of plates for transportation equipment, such as airplanes, high-speed trains, and cars.

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Double-panel metastructure lined with porous material for broadband low-frequency sound insulation

Cited by 15 publications

References 44 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

Lightweight sound insulation optimization of simply supported locally resonant plate

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