Extremely low frequency wave localization via elastic foundation induced metamaterial with a spiral cavity.

ABSTRACT: We proposed a metamaterial which exhibits elastic wave localization at extremely low frequencies. First, we opened an extremely low bandgap via elastic foundations. Subsequently, we investigated wave localization by imposing normal defect, which is widely used to capture waves in conventional wave localization systems. However, there were limitations: wave localization was not achieved when a weak bandgap is generated, and the operating frequency of localization is still in the upper part of the bandgap. To overcome wave localization via the normal defect, we proposed a novel metamaterial with a spiral cavity which can tune the resonating frequency depending on the length of the spiral path. By imposing on the spiral cavity inside the elastic foundation-induced metamaterial, we can shift t

SUBMITTER: Bae MH 

PROVIDER: S-EPMC8901657 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature