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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

An Experimental Study of a Piezoelectric Metastructure With Adaptive Resonant Shunt Circuits

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Author(s):
Silva, Tarcisio Marinelli Pereira [1] ; Clementino, Marcel Araujo [1] ; de Sousa, Vagner Candido [1, 2] ; Junior, Carlos De Marqui [1]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Dept Aeronaut Engn, Sao Carlos Sch Engn, Sao Carlos 13566590 - Brazil
[2] Univ Estadual Paulista, Campus Expt Sao Joao da Boa Vista, Sao Joao Da Boa Vista 13876750 - Brazil
Total Affiliations: 2
Document type: Journal article
Source: IEEE-ASME TRANSACTIONS ON MECHATRONICS; v. 25, n. 2, p. 1076-1083, APR 2020.
Web of Science Citations: 0
Abstract

There is a growing interest for research toward enabling on-demand reconfigurable and readjustable metastructures with dynamic response tailoring capabilities. In this article, a metastructure with piezoelectric unit cells shunted to self-tuning resonant circuits is experimentally explored to enable adaptive behavior in the resulting system dynamics with focus on vibration attenuation. Synthetic inductor circuits are combined with digital potentiometers to enable real-time tuning of the resonant shunts. A microcontroller unit was employed to detect the excitation frequency and properly adjust the resonant circuits. Experimental results are presented for a base-excited, locally resonant, piezoelectric plate following a discussion of the adaptive circuit. For a certain metamaterial configuration, a broad suppression range (102-622 Hz) was observed. The bandwidth of 520 Hz (84% of the upper limiting frequency) could be increased according to the electrical elements of the adaptive circuit. (AU)

FAPESP's process: 17/08467-6 - Effects of shape memory alloy elements on the behavior of aeroelastic systems and adaptive metamaterials
Grantee:Vagner Candido de Sousa
Support type: Scholarships abroad - Research Internship - Post-doctor
FAPESP's process: 13/15264-3 - Design and Experimental Verification of a Semi-Active Pitch Link for Helicopter Vibration Attenuation
Grantee:Marcel Araujo Clementino
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 18/15894-0 - Periodic structure design and optimization for enhanced vibroacoustic performance: ENVIBRO
Grantee:Carlos de Marqui Junior
Support type: Research Projects - Thematic Grants
FAPESP's process: 15/26045-6 - Effects of shape memory alloy elements on the behavior of aeroelastic systems and adaptive metamaterials
Grantee:Vagner Candido de Sousa
Support type: Scholarships in Brazil - Post-Doctorate