Eventos Anais de eventos
MECSOL 2022
8th International Symposium on Solid Mechanics
Resonant meta-lattices for wave confinement and energy harvesting
Submission Author:
Jacopo Maria De Ponti , Italy , Italy
Co-Authors:
luca iorio, Jacopo Maria De Ponti, Raffaele Ardito, Alberto Corigliano
Presenter: Alberto Corigliano
doi://10.26678/ABCM.MECSOL2022.MSL22-0180
Abstract
Precise control of elastic waves is a challenge for many applications in the field of mechanical vibrations, ultrasonic inspection, and energy harvesting. Inspired by the advanced wave manipulation performances of elastic substrates with resonators, we design an elastic meta-lattice with local resonators capable of redirecting and confining elastic energy. The proposed structure is made of square unit cells with a chiral structure, and local resonators at the corners. The interplay between chirality and local resonance allows to redirect elastic waves within the unit cell, amplifying the wavefield in the resonators. By implementing piezoelectric coupling in the resonators, the meta-lattice can be tailored for energy harvesting applications, minimising energy losses due to wave scattering.
Keywords
Metamaterials, meta-lattices, wave confinement, energy harvesting
