Low-frequency sound and vibration reduction of a metamaterial plate submerged in water

Wang, Ting; Chen, Meixia; Dong, Wei; Guo, Hanbei

doi:10.1016/j.euromechsol.2022.104764

Cited by 5 publications

(1 citation statement)

References 22 publications

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“…Metamaterials composed of artificial structures with unusual or unconventional properties are attracting increasing interest [1][2][3]. The band gap characteristics of metamaterials, which means wave cannot propagate within specific frequency ranges, make them show great application prospects for noise and vibration attenuation.…”

Section: Introductionmentioning

confidence: 99%

Investigation of a magnetorheological elastomer metamaterial sandwich beam with tunable graded stiffness for broadband vibration attenuation

Wang

Yang

Chen

et al. 2023

Smart Mater. Struct.

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Metamaterials with local resonance show promising application prospects in low-frequency vibration attenuation. However, with the drawback of narrow band gap, such potential is greatly limited. In order to broaden the local resonant band gap, a semi-active graded MRE metamaterial sandwich beam (GMREMSB) with real-time tunable graded stiffness was proposed and investigated in this study. For theoretical calculation, a mass-spring model was established for the GMREMSB. Then the calculated band gap and transmissibility using Timoshenko beam theory and spectral element method were compared. An experimental test was also conducted for verification. The results show that the bandwidth of the proposed GMREMSB can be widened by the graded stiffness arranged in ascending order. The experimental band gap of the GMREMSB under the graded current of 0.0-0.5-1.0 A is 6.4 Hz wider than the band gap of the periodic structure with the single current of 0.0 A and is 5.0 Hz wider than that of 1.0 A. The growth rate reaches 15.06% and 11.39%, respectively.

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Section: Introductionmentioning

confidence: 99%