Scholarship 24/20273-6 - Método dos elementos finitos, Metamateriais - BV FAPESP
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Modeling and optimization of an adaptive piezoelectric metamaterial plate for improved vibroacoustic behavior

Grant number: 24/20273-6
Support Opportunities:Scholarships in Brazil - Scientific Initiation
Start date until: December 01, 2024
End date until: November 30, 2025
Field of knowledge:Engineering - Aerospace Engineering
Principal Investigator:Carlos de Marqui Junior
Grantee:Leopoldo Vilella Cardoso Ribeiro
Host Institution: Escola de Engenharia de São Carlos (EESC). Universidade de São Paulo (USP). São Carlos , SP, Brazil
Associated research grant:18/15894-0 - Periodic structure design and optimization for enhanced vibroacoustic performance: ENVIBRO, AP.TEM

Abstract

Metamaterials are a class of engineered materials exhibiting properties that do not occur naturally or that are not obtained from their constituent materials. Elastic/acoustic metamaterials can tailor the propagation of elastic waves through the generation of frequency ranges of strong wave attenuation (bandgaps), that are either the result of wave scattering at periodic impedance mismatch zones (Bragg scattering) or are generated by the resonating unit cells that compose it. In turn, piezoelectric smart materials have been used in recent years to obtain linear and non-linear locally-resonant piezoelectric metastructures with tunable electromechanical properties. The goal in this proposal is to deepen the studies of the vibration of piezoelectric metamaterials, which began with a previous FAPESP-funded research project on the modeling of piezoelectric beams, through the modeling and optimization of a piezoelectric metamaterial plate towards adaptive and programmable metastructures. Therefore, this project tackles basic disciplines, such as structural dynamics and optimization, as well as important research-related subjects in the domain of vibration and acoustics, such as linear finite-element simulations of beams and plates, elastic wave propagation in solids, linear piezoelectricity and smart material systems.

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