2022
DOI: 10.3390/app12188981
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Theoretical and Experimental Investigations on the Ultra-Low-Frequency Broadband of Quasi-Static Metamaterials

Abstract: 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. Through the calculation of the dispersion relationship, the frequency response function, and the eigenmode displacement field, it is found that the ultra-low-frequency wide band gap can be generated in the quasi-static metamaterial. The wide band gap is mainly caused by modal transitions. The equivalent mass–spri… Show more

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Cited by 2 publications
(1 citation statement)
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“…Ma et al [19] studied a two-layer radial phononic crystal plate with a low-broadband BG that could significantly modulate the omnidirectional BG by crystal slip in the radial direction and perpendicular to the plate thickness. The high efficiency, frequency selectivity, and omnidirectional wave shielding characteristics of radial elastic metamaterials for elastic wave attenuation provide superior wave shielding and modulation characteristics compared to conventional metamaterials [20], making them have great potential applications in the field of ultra-low-frequency vibration/shock reduction.…”
Section: Introductionmentioning
confidence: 99%
“…Ma et al [19] studied a two-layer radial phononic crystal plate with a low-broadband BG that could significantly modulate the omnidirectional BG by crystal slip in the radial direction and perpendicular to the plate thickness. The high efficiency, frequency selectivity, and omnidirectional wave shielding characteristics of radial elastic metamaterials for elastic wave attenuation provide superior wave shielding and modulation characteristics compared to conventional metamaterials [20], making them have great potential applications in the field of ultra-low-frequency vibration/shock reduction.…”
Section: Introductionmentioning
confidence: 99%