Broadband diffuse field sound insulation of double layer metamaterial plates lined with porous material

Wang, Shuaixing; Xiao, Yong; Guo, Jiajia; Zhang, Hao; Wen, Jihong

doi:10.1063/5.0060100

Cited by 11 publications

(2 citation statements)

References 19 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

“…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

Wang

Xiao

et al. 2023

Applied Acoustics

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Broadband diffuse field sound insulation of double layer metamaterial plates lined with porous material

Cited by 11 publications

References 19 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

Lightweight sound insulation optimization of simply supported locally resonant plate

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

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