Broadband and multimode attenuation in Duffingand NES-type piezoelectric metastructures

Author(s)

Mosquera-Sanchez, J. A. ; De Marqui Jr, C.

• Document type: Journal article
• Source: INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES; v. 270, p. 16-pg., 2024-02-08.

Abstract

This paper reports the dynamic effects leveraged into one-dimensional metastructures by Duffing- and Nonlinear Energy Sink (NES)-type piezoelectric attachments. The versatility of the nonlinear piezoelectric attachments enables the exploitation of their rich dynamic features under low amplitude excitation regimes. Numerical and experimental results show that this class of nonlinear metastructures present reconfigurable attenuation bands as a function of the strength of nonlinearity. Broadband and multimode vibration attenuation become enhanced due to the wave supratransmission phenomenon, as the strength of nonlinearity increases in the piezoelectric attachments. While the experimentally investigated metastructure with Duffing-type piezoelectric attachments presents normalized bandwidths, 4 ohm, of 0.84 around the underlying linear resonating frequency, it is shown for the first time in the literature that the finite beam with NES-type piezoelectric attachments exhibits impressive Delta ohm values in excess of 1.90, including strong attenuation of several linear transmissibility peaks. The results open new avenues for fully tunable metastructures with enhanced broadband and multimode vibration attenuation features, based on nonlinear piezoelectric shunt circuits. (AU)

• FAPESP's process: 22/01922-8 - Multi-user equipment approved in grant 2018/15894-0: Laser Doppler Vibrometer (EESC)
• Grantee: Carlos de Marqui Junior
• Support Opportunities: Multi-user Equipment Program
• FAPESP's process: 18/14546-9 - Control and energy harvesting from low-frequency vibro-acoustic disturbances with smart metastructures
• Grantee: Jaime Alberto Mosquera Sánchez
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 18/15894-0 - Periodic structure design and optimization for enhanced vibroacoustic performance: ENVIBRO
• Grantee: Carlos de Marqui Junior
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 20/01608-6 - Nonlinear electroelastic metamaterial for low-frequency, broadband vibration mitigation
• Grantee: Jaime Alberto Mosquera Sánchez
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor
• FAPESP's process: 13/07375-0 - CeMEAI - Center for Mathematical Sciences Applied to Industry
• Grantee: Francisco Louzada Neto
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC