Electron-phonon metamaterial featuring nonlinear tri-interleaved piezoelectric topologies and its application in low-frequency vibration control
Résumé
This article proposes a nonlinear tri-interleaved piezoelectric topology based on the synchronized switch damping on inductor (SSDI) technique, which can be applied to phononic metamaterials for elastic wave control and effective low-frequency vibration reduction. A comparison of the attenuation performance is made between piezoelectric phononic metamaterial with distributed SSDI topology (each SSDI shunt being independently connected to a single piezoelectric element) and piezoelectric phononic metamaterial with the proposed electronic topology. Theoretical results show excellent band gap hybridization (near-coupling between Bragg scattering mechanism and wideband resonance mechanism induced by synchronized switch damping networks in piezoelectric phononic metamaterials) with the proposed electronic topology over the investigated frequency domain. Furthermore, piezoelectric phononic metamaterials with proposed electronic topology generated a better low-frequency broadband gap, which is experimentally validated by measuring the harmonic response of a piezoelectric phononic metamaterial beam under clamped-clamped boundary conditions. � 2016 IOP Publishing Ltd.
Mots clés
piezoelectric
phononic
Low-frequency vibration
Synchronized switch damping
Synchronized switch damping on inductor (SSDI)
Piezoelectric elements
Damping
Elastic waves
Electric switches
Energy gap
Frequency domain analysis
Metamaterials
Phonons
Synchronization
Topology
Vibration control
Wave propagation
Attenuation performance
Electronic topologies
Piezoelectricity