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The band gap characteristic of a double-leaf acoustic black hole coupled with rotatable local resonance structure [PDF]
iScienceSummary: In traditional acoustic black hole (ABH), the band gap (BG) is limited by its structural dimensions, so it can only occur at relatively high frequencies. Meanwhile, the BG is usually presented only in one direction. For solving the dual problems
Kaibin Shu +4 more
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Improvement of Sound Insulation Through Double-Panel Structure by Using Hybrid Local Resonator Array [PDF]
Archives of Acoustics, 2023 In this paper, we present one approach to improve the soundproofing performance of the double-panel structure (DPS) in the entire audible frequencies, in which two kinds of local resonances, the breathing-type resonance and the Helmholtz resonance, are ...
Kyong-Su Ri +2 more
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A Honeycomb Based Graded Metamaterial Muffler with Broadband Sound Attenuation and Load Bearing Performances [PDF]
Archives of Acoustics, 2022 A challenge for developing acoustic metamaterials (AMMs) is considering the application of broadband muffling and load bearing capacity simultaneously. In this paper, a honeycomb based graded AMM muffler is proposed, which can widen the attenuation band ...
Gen Li, Yan Chen, Huan He
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Applied Sciences, 2022 This paper proposes an I-shaped radial elastic metamaterial with ultra-low-frequency broadband characteristics and studies the propagation characteristics of elastic waves in their quasi-static state.
Haixia Liu, Weitao He, Lixia Li, Qi Jia
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On the Free Vibrations of Non-Classically Damped Locally Resonant Metamaterial Plates
Nanomaterials, 2022 In this paper, the focus is on the free vibrations of locally resonant metamaterial plates with viscously damped resonators. Upon formulating a dynamic-stiffness model where the resonators are represented via pertinent reaction forces depending on the ...
Andrea Francesco Russillo +3 more
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Frontiers in Materials, 2022 In this paper, a novel radial seismic metamaterial (LRSM) based on layering theory is proposed. Compared with traditional seismic metamaterials, the structure of LRSM is a periodic array of multi-layer rings distributed along the radial direction.
Haixia Liu +6 more
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A Mass-In-Mass Metamaterial Design for Harvesting Energy at a Broadband Frequency Range
Energies, 2023 A novel deterministic method to harvest energy within a broadband frequency (0~25 kHz) from a mass-in-mass metamaterial is presented herein. Traditional metamaterials are composed of multiple materials (named as resonators and matrix) with different ...
Hossain Ahmed, Riaz Ahmed
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A Locally Disordered Metamaterial for Directing and Trapping Water Waves
Crystals, 2023 Manipulating the flow of water wave energy is crucial for ocean wave energy extraction or coastal protection, and the emergence of metamaterials paves a potential way for controlling water waves.
Wei-Qi Sun +4 more
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Sensors, 2023 Air-coupled ultrasound sensors have advantages over contact ultrasound sensors when a sample should not become contaminated or influenced by the couplant or the measurement has to be a fast and automated inline process.
Klaas Bente +4 more
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Directional Transmission Characteristics of Acoustic Waves Based on Artificial Periodic Structures
IEEE Access, 2019 Acoustic artificial periodic structures, also known as phononic crystal, have been widely used in special acoustic problems such as low-frequency vibration reduction and noise reduction due to their bandgap characteristics.
Shuai Tang, Rui Wang, Jianning Han
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