Effective Parameters of Acoustic Metamaterials
Sign Up to like & getrecommendations! Published in 2018 at "Russian Physics Journal"
DOI: 10.1007/s11182-018-1506-3
Abstract: Analytical expressions are presented for the wave number, the characteristic wave impedance, and the refractive index of homogeneous longitudinal plane waves propagating in an acoustic metamaterial with dissipative losses. The metamaterial is characterized by the… read more here.
Keywords: acoustic metamaterials; parameters acoustic; effective parameters;
From Photonic Crystals to Seismic Metamaterials: A Review via Phononic Crystals and Acoustic Metamaterials
Sign Up to like & getrecommendations! Published in 2021 at "Archives of Computational Methods in Engineering"
DOI: 10.1007/s11831-021-09612-8
Abstract: The advancement in electromagnetic metamaterials, which commenced three decades ago, experienced a rapid transformation into acoustic and elastic systems in the forms of phononic crystals and acoustic/elastic metamaterials. Since its early discovery, numerous wave phenomena… read more here.
Keywords: acoustic elastic; photonic crystals; crystals acoustic; phononic crystals ... See more keywords
Active control of the dynamic density of acoustic metamaterials
Sign Up to like & getrecommendations! Published in 2021 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2021.108001
Abstract: Abstract All attempts to develop acoustic metamaterials with prescribed characteristics are based on utilizing the concepts of resonance frequencies of the metamaterial cell structure or on the spatial arrangement of two-or multi-phase domains to realize… read more here.
Keywords: metamaterial cell; density; active control; acoustic metamaterials ... See more keywords
Spectral variational multiscale model for transient dynamics of phononic crystals and acoustic metamaterials
Sign Up to like & getrecommendations! Published in 2020 at "Computer Methods in Applied Mechanics and Engineering"
DOI: 10.1016/j.cma.2019.112761
Abstract: Abstract In this manuscript, a spectral multiscale model is developed for transient elastic wave propagation in periodic composites. The basis of the multiscale approach is the variational multiscale enrichment method that permits analysis of wave… read more here.
Keywords: multiscale; phononic crystals; acoustic metamaterials; crystals acoustic ... See more keywords
Design of tunable acoustic metamaterials with periodic piezoelectric microstructure
Sign Up to like & getrecommendations! Published in 2020 at "Extreme Mechanics Letters"
DOI: 10.1016/j.eml.2020.100977
Abstract: Abstract An innovative special class of tunable periodic metamaterials is designed, suitable for realizing high-performance acoustic filters. The metamaterial is made up of a phononic crystal coupled to local resonators. Such local resonators consist of… read more here.
Keywords: shunting piezoelectric; tunable acoustic; design tunable; acoustic metamaterials ... See more keywords
Design multi-stopband laminate acoustic metamaterials for structural-acoustic coupled system
Sign Up to like & getrecommendations! Published in 2019 at "Mechanical Systems and Signal Processing"
DOI: 10.1016/j.ymssp.2018.06.004
Abstract: Abstract This paper designs the laminate acoustic metamaterials with multi-stopband for structural-acoustic coupled system. The laminate acoustic metamaterials are composed of carbon-fiber-reinforced polymer (CFRP) and a periodic array of two degrees of freedom (2-DOF) mass-spring-damper… read more here.
Keywords: structural acoustic; laminate acoustic; multi stopband; acoustic metamaterials ... See more keywords
DeterministicSelf-Morphing of Soft-Stiff HybridizedPolymeric Films for Acoustic Metamaterials
Sign Up to like & getrecommendations! Published in 2020 at "ACS Applied Materials & Interfaces"
DOI: 10.1021/acsami.0c01115.s001
Abstract: We reported a soft-stiff hybridized polymeric film that can self-morph to dedicated three-dimensional (3D) structures for application in acoustic metamaterials. The hybridized film was fabricated by laterally adhering a soft and responsive poly(N-isopropylacrylamide) (PNIPAM) hydrogel… read more here.
Keywords: hybridized polymeric; self morphing; acoustic metamaterials; morphing soft ... See more keywords
Digitally virtualized atoms for acoustic metamaterials
Sign Up to like & getrecommendations! Published in 2020 at "Nature Communications"
DOI: 10.1038/s41467-019-14124-y
Abstract: By designing tailor-made resonance modes with structured atoms, metamaterials allow us to obtain constitutive parameters outside their limited range from natural materials. Nonetheless, tuning the constitutive parameters depends on our ability to modify the physical… read more here.
Keywords: constitutive parameters; frequency dispersion; acoustic metamaterials; structure ... See more keywords
Tunable pipe-type acoustic metamaterials based on piezoelectric composite side-branches
Sign Up to like & getrecommendations! Published in 2021 at "Journal of Applied Physics"
DOI: 10.1063/5.0039751
Abstract: The ability to tune the performance of acoustic metamaterials without structural modifications or complex active control circuits is a remarkable challenge. In this work, we present a square piezoelectric side-branch (PSB) pipe-type structure that consists… read more here.
Keywords: acoustic metamaterials; pipe type; tunable pipe; piezoelectric composite ... See more keywords
3D Hilbert fractal acoustic metamaterials: low-frequency and multi-band sound insulation
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Physics D: Applied Physics"
DOI: 10.1088/1361-6463/ab092a
Abstract: In this work, we present a class of three-dimensional (3D) labyrinthine acoustic metamaterials with self-similar fractal technique, which can produce multiple frequency-band sound insulation in deep-subwavelength scale. By simultaneously exploiting the multi-frequency bandgaps and the… read more here.
Keywords: frequency; low frequency; band; multi ... See more keywords
Modulational instability and rogue waves in one-dimensional nonlinear acoustic metamaterials: case of diatomic model
Sign Up to like & getrecommendations! Published in 2021 at "Physica Scripta"
DOI: 10.1088/1402-4896/ac42ea
Abstract: In this paper, by means of the expanded Taylor series and Lindstedt-Poincaré perturbation methods, the coupled nonlinear Schrödinger equations (CNLSE) modeling the propagation of acoustic waves in acoustic metamaterial is obtained. Using these equations, the… read more here.
Keywords: acoustic metamaterials; waves one; modulational instability; rogue waves ... See more keywords