Extending and lowering band gaps by multilayered locally resonant phononic crystals
Sign Up to like & getrecommendations! Published in 2018 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2017.12.012
Abstract: Abstract Locally resonant phononic crystals (LRPCs) have band gaps with low frequencies and the size of the cell is much smaller than the wave lengths of the band gaps. This unique property makes them good… read more here.
Keywords: phononic crystals; locally resonant; extending lowering; band gaps ... See more keywords
Research on multi-band structural noise reduction of vehicle body based on two-degree-of-freedom locally resonant phononic crystal
Sign Up to like & getrecommendations! Published in 2021 at "Applied Acoustics"
DOI: 10.1016/j.apacoust.2021.108073
Abstract: Abstract First, the dispersion curve of a two-degree-of-freedom locally resonant phononic crystal (LRPC) is calculated by the plane wave expansion method. The result shows that the structure has the characteristics of double bandgaps in the… read more here.
Keywords: two degree; freedom locally; resonant phononic; locally resonant ... See more keywords
Wave propagation in locally resonant cylindrically curved metamaterial panels
Sign Up to like & getrecommendations! Published in 2017 at "International Journal of Mechanical Sciences"
DOI: 10.1016/j.ijmecsci.2016.07.003
Abstract: Abstract Combining lightweight characteristics with favourable noise and vibration behaviour, locally resonant metamaterials with vibro-acoustic stopband behaviour are gaining increasingly more attention. In view of applicability of metamaterials, this paper investigates the effects of curvature… read more here.
Keywords: resonant cylindrically; locally resonant; curved metamaterial; wave propagation ... See more keywords
An analytical framework for locally resonant piezoelectric metamaterial plates
Sign Up to like & getrecommendations! Published in 2020 at "International Journal of Solids and Structures"
DOI: 10.1016/j.ijsolstr.2019.08.011
Abstract: Abstract We present an analytical modeling framework and its analysis for thin piezoelectric metamaterial plates to enable and predict low-frequency bandgap formation in finite structural configurations with specified boundary conditions. Using Hamilton’s extended principle and… read more here.
Keywords: metamaterial plates; piezoelectric metamaterial; locally resonant; framework ... See more keywords
Dynamic homogenization of composite and locally resonant flexural systems
Sign Up to like & getrecommendations! Published in 2018 at "Journal of The Mechanics and Physics of Solids"
DOI: 10.1016/j.jmps.2018.06.011
Abstract: Abstract Dynamic homogenization aims at describing the macroscopic characteristics of wave propagation in microstructured systems. Using a simple method, we derive frequency-dependent homogenized parameters that reproduce the exact dispersion relations of infinitely periodic flexural systems.… read more here.
Keywords: flexural systems; locally resonant; dynamic homogenization; composite locally ... See more keywords
Band-gap structure in two- and three-dimensional cellular locally resonant materials
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2019.04.027
Abstract: Abstract Wave propagation in periodic locally resonant materials (LRM) is characterized by the presence of band-gaps occurring at relatively low frequencies which can be exploited for vibration attenuation or impact absorption. In this work we… read more here.
Keywords: resonant materials; structure two; gap structure; locally resonant ... See more keywords
A locally resonant elastic metamaterial based on coupled vibration of internal liquid and coating layer
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Sound and Vibration"
DOI: 10.1016/j.jsv.2019.115102
Abstract: Abstract In present work, a locally resonant elastic metamaterial (LREM) based on liquid solid interaction (LSI) is proposed, which can attenuate flexural wave in broad low frequency range. By using internal liquid as scattering core… read more here.
Keywords: resonant elastic; internal liquid; vibration; frequency ... See more keywords
Composite pentamode metamaterials with low frequency locally resonant characteristics
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Physics"
DOI: 10.1063/1.4993904
Abstract: Locally resonant phononic crystals have excellent low-frequency characteristics and can result in a small size controlling a long wavelength. Based on the locally resonant phononic crystal theory, locally resonant pentamode metamaterials with composite materials are… read more here.
Keywords: pentamode metamaterials; low frequency; locally resonant; resonant pentamode ... See more keywords
Broadband locally resonant metamaterials with graded hierarchical architecture
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Physics"
DOI: 10.1063/1.5003264
Abstract: We investigate the effect of hierarchical designs on the bandgap structure of periodic lattice systems with inner resonators. A detailed parameter study reveals various interesting features of structures with two levels of hierarchy as compared… read more here.
Keywords: broadband locally; locally resonant; metamaterials graded; hierarchical architecture ... See more keywords
Interferences in locally resonant sonic metamaterials formed from Helmholtz resonators
Sign Up to like & getrecommendations! Published in 2019 at "Applied Physics Letters"
DOI: 10.1063/1.5092375
Abstract: The emergence of materials artificially designed to control the transmission of waves, generally called metamaterials, has been a hot topic in the field of acoustics for several years. The design of these metamaterials is usually… read more here.
Keywords: metamaterials formed; resonant sonic; control; locally resonant ... See more keywords
An underground barrier of locally resonant metamaterial to attenuate surface elastic waves in solids
Sign Up to like & getrecommendations! Published in 2020 at "AIP Advances"
DOI: 10.1063/5.0012771
Abstract: The low frequency of seismic waves severely limits the regulation of wave propagation in earthquake protection engineering applications. In recent years, locally resonant metamaterials have been introduced for seismic wave attenuation. A barrier based on… read more here.
Keywords: wave attenuation; underground barrier; locally resonant; wave ... See more keywords