Intrinsically Polar Elastic Metamaterials.
Sign Up to like & getrecommendations! Published in 2017 at "Advanced materials"
DOI: 10.1002/adma.201700540
Abstract: In many applications, one needs to combine materials with varying properties to achieve certain functionalities. For example, the inner layer of a helmet should be soft for cushioning while the outer shell should be rigid… read more here.
Keywords: polar elastic; layer; topology; material ... See more keywords
Inverse band gap design of elastic metamaterials for P and SV wave control
Sign Up to like & getrecommendations! Published in 2020 at "Computer Methods in Applied Mechanics and Engineering"
DOI: 10.1016/j.cma.2020.113263
Abstract: Abstract We describe a systematic approach for engineering the dispersive properties of elastic metamaterials in order to band-gap, at user-defined frequency ranges, the propagation of elastic waves, accounting simultaneously for both P and SV waves.… read more here.
Keywords: band gap; band; wave control; elastic metamaterials ... See more keywords
Topology optimization of anisotropic broadband double-negative elastic metamaterials
Sign Up to like & getrecommendations! Published in 2017 at "Journal of The Mechanics and Physics of Solids"
DOI: 10.1016/j.jmps.2017.04.009
Abstract: Abstract As the counterpart of electromagnetic and acoustic metamaterials, elastic metamaterials are artificial periodic elastic composite materials offering the possibility to manipulate elastic wave propagation in the subwavelength scale through different mechanisms. For the promising… read more here.
Keywords: negative effective; anisotropic; double negative; topology ... See more keywords
Amplitude-induced bandgap: New type of bandgap for nonlinear elastic metamaterials
Sign Up to like & getrecommendations! Published in 2020 at "Journal of The Mechanics and Physics of Solids"
DOI: 10.1016/j.jmps.2020.103930
Abstract: Abstract In this paper, we report a new type of bandgap phenomenon called “amplitude-induced bandgap”, which is induced by amplitude in nonlinear metamaterials. Generally, bandgap phenomena in elastic metamaterials or phononic crystals have been achieved… read more here.
Keywords: bandgap; new type; induced bandgap; type bandgap ... See more keywords
Theoretical investigation of magneto-electro-elastic metamaterials
Sign Up to like & getrecommendations! Published in 2020 at "Solid State Communications"
DOI: 10.1016/j.ssc.2020.113850
Abstract: Abstract The properties of the multi-field coupling phonon-polaritons in magneto-electro-elastic metamaterials are studied theoretically on the base of the theory of the phonon-polaritons in the piezoelectric superlattices. The mechanism for multi−field coupling is analyzed. We… read more here.
Keywords: electro elastic; elastic metamaterials; field coupling; multi field ... See more keywords
Tunable photo-responsive elastic metamaterials
Sign Up to like & getrecommendations! Published in 2020 at "Nature Communications"
DOI: 10.1038/s41467-020-16272-y
Abstract: The metamaterial paradigm has allowed an unprecedented space-time control of various physical fields, including elastic and acoustic waves. Despite the wide variety of metamaterial configurations proposed so far, most of the existing solutions display a… read more here.
Keywords: frequency; responsive elastic; tunable photo; elastic metamaterials ... See more keywords
SH wave propagation in joined half-spaces composed of elastic metamaterials
Sign Up to like & getrecommendations! Published in 2017 at "Journal of Applied Physics"
DOI: 10.1063/1.4994611
Abstract: Based on the effective-medium theory, the propagation of a shear horizontal (SH) wave in joined half-spaces composed of elastic metamaterials (EMMs) is investigated. From the dispersion relations, the effects of negative effective-medium parameters on the… read more here.
Keywords: propagation; joined half; half spaces; composed elastic ... See more keywords
In situ switchable local resonance in elastic metamaterials through bistable topological transformation
Sign Up to like & getrecommendations! Published in 2023 at "Applied Physics Letters"
DOI: 10.1063/5.0152525
Abstract: We report a topology-transformable resonator with two distinct stable states, one kinematically determinate and endowed with nearly rigid-body motion at low-frequencies, and the other accompanied by a floppy pseudo zero-energy mode capable of showing low-frequency… read more here.
Keywords: local resonance; situ switchable; resonance; topological transformation ... See more keywords
Elastic wave propagation in the elastic metamaterials containing parallel multi-resonators
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Physics D: Applied Physics"
DOI: 10.1088/1361-6463/ab2dba
Abstract: This paper presents the modeling technique, design method, a new working mechanism and influence factors for elastic metamaterials (EMs) with parallel multi-resonators for broadband elastic vibration suppression. The general formula of the effective mass is… read more here.
Keywords: parallel multi; mass; elastic metamaterials; band gaps ... See more keywords
Extreme impact mitigation by critical point constraints on elastic metamaterials
Sign Up to like & getrecommendations! Published in 2017 at "Journal of the Acoustical Society of America"
DOI: 10.1121/1.4987868
Abstract: A critical transition occurs between pre- and post-buckled configurations of lightly-damped structures where the relative proportions of dissipative and elastic forces may reverse, theoretically giving rise to large effective damping properties. This paper describes computational… read more here.
Keywords: elastic metamaterials; point constraints; impact mitigation; critical point ... See more keywords
Long-range elastic metamaterials
Sign Up to like & getrecommendations! Published in 2017 at "Journal of the Acoustical Society of America"
DOI: 10.1121/1.4988242
Abstract: The problem of wave propagation control in one-dimensional systems, including electrical charges and dipole magnetic moments is investigated. The waveguide is characterized by long-range and nonlinear interaction forces of Coulomb and Lorentz nature. Wave propagation… read more here.
Keywords: range elastic; elastic metamaterials; long range; wave propagation ... See more keywords