This work investigates the emergent phenomena in non-linear locally resonant elasto-acoustic metamaterials. The energy exchange between the propagative and subharmonic evanescent wave modes is studied, which has been shown to originate from the autoparametric resonance promoted by the non-linearity in the resonator. The phenomenon is analysed semi-analytically (using the multiple scales method), numerically, and experimentally.
Emergent phenomena in locally resonant acoustic metamaterials due to subharmonic energy exchange
Zega V.;
2022-01-01
Abstract
This work investigates the emergent phenomena in non-linear locally resonant elasto-acoustic metamaterials. The energy exchange between the propagative and subharmonic evanescent wave modes is studied, which has been shown to originate from the autoparametric resonance promoted by the non-linearity in the resonator. The phenomenon is analysed semi-analytically (using the multiple scales method), numerically, and experimentally.File in questo prodotto:
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