Sound transmission loss of metamaterial-based thin plates with multiple subwavelength arrays of attached resonators

Xiao, Yong; Wen, Jihong; Wen, Xisen

doi:10.1016/j.jsv.2012.07.016

Cited by 236 publications

(131 citation statements)

References 45 publications

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“…(21) and (22), this observed difference in the reflectance can be correctly modeled, as shown by the solid lines in Figs. 3 and 4.…”

Section: Resultsmentioning

confidence: 52%

“…As a result, previous works in air have either been restricted to theoretical and numerical evaluation [4,7,[21][22][23] or limited to an indirect comparison of the metamaterial properties using experimental results for the reflected and transmitted pressure field [5,24]. In this work, we make the significant step of experimentally extracting the effective dynamic properties (density and sound speed) of these flexural metamaterial elements.…”

Section: Introductionmentioning

confidence: 99%

“…In fact, the role of the elastic properties is paramount for the case of structures embedded in water, as it has been recently demonstrated [25]. Although some recent work has begun to incorporate the elastic effects into the metamaterial structure, many of these designs continue to have the primary dynamic element consisting of massspring resonators which are affixed to an elastic plate as structural support [22,23]. Alternatively, soft acoustic metamaterials represent a paradigm shift beyond this framework by creating the dynamics from the structure itself.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Aerogel as a Soft Acoustic Metamaterial for Airborne Sound

et al. 2016

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Soft acoustic metamaterials utilizing mesoporous structures have been proposed recently as a means for tuning the overall effective properties of the metamaterial and providing better coupling to the surrounding air. In this paper, the use of silica aerogel is examined theoretically and experimentally as part of a compact soft acoustic metamaterial structure, which enables a wide range of exotic effective macroscopic properties to be demonstrated, including negative density, density near zero, and nonresonant broadband slow-sound propagation. Experimental data are obtained on the effective density and sound speed using an air-filled acoustic impedance tube for flexural metamaterial elements, which have been investigated previously only indirectly due to the large contrast in acoustic impedance compared to that of air. Experimental results are presented for silica aerogel arranged in parallel with either one or two acoustic ports and are in very good agreement with the theoretical model.

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“…(21) and (22), this observed difference in the reflectance can be correctly modeled, as shown by the solid lines in Figs. 3 and 4.…”

Section: Resultsmentioning

confidence: 52%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Aerogel as a Soft Acoustic Metamaterial for Airborne Sound

et al. 2016

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“…The physical origin of phononic and photonic band gaps can be understood at micro-scale using the classical wave theory to describe the Bragg and Mie resonances, respectively, based on the scattering of mechanical and electromagnetic waves propagating within the crystal 17 . PCs have many applications, such as vibration isolation technology [18][19][20][21][22] , acoustic barriers/filters [23][24][25] , noise suppression devices [26][27] , surface acoustic devices 28 , architectural design 29 , sound shields 30 , acoustic diodes 31 , elastic metamaterials [21][22]25,27,32 and thermal metamaterials [33][34][35][36][37][38][39] . There are also smart PCs that have been studied, such as piezoelectric [40][41][42][43][44][45][46][47][48][49][50][51][52][53][54] , piezomagnetic [55][56][57][58] an...…”

Section: Introductionmentioning

confidence: 99%

Complete Band Gaps in Nano-Piezoelectric Phononic Crystals

Miranda

Santos

2017

Mat. Res.

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We study the band structure of elastic waves propagating in a nano-piezoelectric phononic crystal consisting of a polymeric matrix reinforced by BaTiO 3 inclusions in square, rectangular, triangular, honeycomb and Kagomé lattices. We also investigate the influence of inclusion cross section geometrycircular, hollow circular, square and rotated square with a 45º angle of rotation with respect to x and y axes. Plane wave expansion method is used to solve the governing equations of motion of a piezoelectric solid based on classical elasticity theory, ignoring nanoscopic size effects, considering two-dimensional periodicity and wave propagation in the xy plane. Complete band gaps between XY and Z modes are observed for all inclusions and the best performance is for circular inclusion in a triangular lattice. Piezoelectricity influences significantly the band gaps for hollow circular inclusion in lower frequencies. We suggest that nano-piezoelectric phononic crystals are feasible for elastic vibration management in GHz.

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“…22 A unique feature of locally resonant metamaterials is the ability to form low-frequency band gaps, a feature which is promising in the applied field of mechanical vibration mitigation. [23][24][25][26][27][28][29] Vibration mitigation structures have been realized both in one dimension (1D) [24][25][26] and two dimensions (2D). 23,24 In most of these works, the structures are modeled as simple mass/spring systems, and theoretical models are developed that can efficiently handle the behavior of these structures.…”

Section: Introductionmentioning

confidence: 99%

Granular metamaterials for vibration mitigation

Gantzounis¹,

Serra-García²,

Homma³

et al. 2013

Journal of Applied Physics

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Acoustic metamaterials that allow low-frequency band gaps are interesting for many practical engineering applications, where vibration control and sound insulation are necessary. In most prior studies, the mechanical response of these structures has been described using linear continuum approximations. In this work, we experimentally and theoretically address the formation of low-frequency band gaps in locally resonant granular crystals, where the dynamics of the system is governed by discrete equations. We investigate the quasi-linear behavior of such structures. The analysis shows that a stopband can be introduced at about one octave lower frequency than in materials without local resonances. Broadband and multi-frequency stopband characteristics can also be achieved by strategically tailoring the non-uniform local resonance parameters. V C 2013 AIP Publishing LLC. [http://dx

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Sound transmission loss of metamaterial-based thin plates with multiple subwavelength arrays of attached resonators

Cited by 236 publications

References 45 publications

Aerogel as a Soft Acoustic Metamaterial for Airborne Sound

Aerogel as a Soft Acoustic Metamaterial for Airborne Sound

Complete Band Gaps in Nano-Piezoelectric Phononic Crystals

Granular metamaterials for vibration mitigation

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