Effect of Cavity Structure on Acoustic Characteristics of Phononic Crystals Based on Double-Layer Plates

Chen, Chuanmin; Guo, Zhaofeng; Liu, Songtao; Feng, Hongda; Qiao, Chuanxi

doi:10.3390/cryst10110995

Cited by 6 publications

(2 citation statements)

References 38 publications

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“…They found that such a system can easily activate the coupling effects between the resonators to obtain a broadband gap of 590 to 3220 Hz. Chen et al [18] studied the acoustic performance of doublelayer plates cavity. It was observed that within a certain limit a better noise attenuation performance can be attained when the volume of the cavity was increased.…”

Section: Introductionmentioning

confidence: 99%

Parametric Optimization of Local Resonant Sonic Crystals Window on Noise Attenuation by Using Taguchi Method and ANOVA Analysis

et al. 2022

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Local resonant sonic crystals (LRSCs) window as a novel design has recently been proposed to achieve a good balance between noise mitigation, natural ventilation and natural lighting. In an effort to explore the feasibilities of such designs in civil residential buildings, an optimization methodology was proposed to develop a more compact LRSCs window with high noise attenuation performance in the present study. Specifically, the Taguchi method was adopted for the design of experiments on the parameters of interest and their corresponding levels, and SN ratio analysis was then applied for the parametric evaluations on the noise attenuation on specified frequencies in traffic noise (concentrated sound energy frequency range: 630–1000 Hz). Three optimal sets of design parameters on the interested frequencies, namely, 630 Hz, 800 Hz and 1000 Hz were obtained. ANOVA analysis was conducted to quantificationally identify the design parameters with statistical significance and remarkable contribution to the desired performance. Results indicate that the slit size has the most significant influence on the overall noise attenuation performance, followed by cavity width. An optimal set of design parameters to achieve the overall best noise reduction performance in the frequency range of 630–1000 Hz was finally determined by combining the SN ratio and ANOVA analysis. A prototype of the final optimized LRSCs window was then fabricated and tested in a semi-anechoic chamber. Good agreement was found between the experiment and numerical simulation. In comparison to the benchmark case, the final optimized design can achieve a further noise reduction by 2.84 dBA, 3.48 dBA and 5.56 dBA for the frequencies of 630 Hz, 800 Hz and 1000 Hz, respectively. The overall noise reduction for the interested frequency range can be promoted by 3.28 dBA. The results indicate that the proposed optimization methodology is practical and efficient in designing a high-performance LRSCs window or improving similar applications.

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Section: Introductionmentioning

confidence: 99%

Parametric Optimization of Local Resonant Sonic Crystals Window on Noise Attenuation by Using Taguchi Method and ANOVA Analysis

et al. 2022

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“…With the rapid development of industry, double-layer structures with the multifunctional characteristics, such as light weight, large stiffnes, good impact resistance and so on, have been widely used in the field of naval architecture, aeronautics, astronautics, civil engineering and so on [4] . Moreover, the cavity of a double-layer structure in engineering is generally periodically added sandwich to enhance structural performance, which makes the double-layer structures have an excellent convergence point with PCs [5] . Hence, based on the common application background in acoustical devices of NEMS and PCs, excellent characteristics of piezoelectric nanostructures, PCs and double-layer structures will be gathered, and the new coupling physical characteristics will be displayed if the…”

mentioning

confidence: 99%

Studies of a new-style resonator to control electro-mechanical coupling bandgap of a locally resonant piezoelectric/elastic phononic crystal double-layer nonlocal nanobeam

Qian

Wang

2022

Applied Mathematical Modelling

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The paper proposed a model of a locally resonant (LR) piezoelectric/elastic phononic crystal (PC) nanobeam with periodically attached "spring-mass" resonator and additional spring between upper and lower nanobeams, as well as horizontal spring between mass and foundation. Euler beam theory and nonlocal piezoelectricity theory are coupled and introduced to plane wave expansion (PWE) method to calculate the band structures of such a model with different parameters. Numerical results and further analysis demonstrate that all the bands of double-layer nanobeam can be divided into symmetric and antisymmetric ones. Adding additional and horizontal springs play a role in control the symmetric and antisymmetric bands respectively, which make wider band gaps be opened than corresponding single-layer nanobeam. Moreover, the change of parameters of electro-mechanical coupling fields and resonator can be applied to effectively control the starting frequencies and widths of band gaps, which can provide a theoretical basis for active control of vibration. Effects of geometric and non-dimensional nonlocal parameters on band gaps are also discussed. All the studies are expected to be applied to actively control vibration propagation in the field of nano electro-mechanical system (NEMS). Key words: locally resonant piezoelectric/elastic phononic crystal double-layer nanobeam; nonlocal piezoelectricity theory; plane wave expansion method; symmetric and antisymmetric modes; nano electro-mechanical system I. INTRODUCTION Recently, different kinds of NEMS have been widely applied to national defense, civil use, biomedicine and so on, which have excellent characteristics such as small size, superhigh frequency, lower power, high sensitivity and so on. The existing piezoelectric nano devices include biological motor, resonant sensor, filter and so on [1] . As for artificial periodic composite structures, PCs in various forms have attracted wide attentions on account of the existing of band gaps, which have been applied to vibration and noise control, acoustics lens, acoustical devices and so on [2] . Generally, PCs can be divided to Bragg scattering and LR types. Particularly, the opening of band gaps of LR PCs is mainly based on the locally resonance of scatters, which have an advantage in opening band gaps in low frequency region [3] . With the rapid development of industry, double-layer structures with the multifunctional characteristics, such as light weight, large stiffnes, good impact resistance and so on, have been widely used in the field of naval architecture, aeronautics, astronautics, civil engineering and so on [4] . Moreover, the cavity of a double-layer structure in engineering is generally periodically added sandwich to enhance structural performance, which makes the double-layer structures have an excellent convergence point with PCs [5] . Hence, based on the common application background in acoustical devices of NEMS and PCs, excellent characteristics of piezoelectric nanostructures, PCs and double-layer structures w...

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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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Effect of Cavity Structure on Acoustic Characteristics of Phononic Crystals Based on Double-Layer Plates

Cited by 6 publications

References 38 publications

Parametric Optimization of Local Resonant Sonic Crystals Window on Noise Attenuation by Using Taguchi Method and ANOVA Analysis

Parametric Optimization of Local Resonant Sonic Crystals Window on Noise Attenuation by Using Taguchi Method and ANOVA Analysis

Studies of a new-style resonator to control electro-mechanical coupling bandgap of a locally resonant piezoelectric/elastic phononic crystal double-layer nonlocal nanobeam

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

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