Nonlinear Synthetic Impedance Circuits for Piezoelectric Structures

Obaidullah Alfahmi, Christopher Sugino, Alper Erturk

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Low-frequency applications of piezoelectric shunt circuits for vibration and noise attenuation triggered the research on implementing synthetic impedance circuits in smart structures a few decades ago. Most of the existing efforts have been limited to standard scenarios of emulating linear circuit components such as inductances by means of their synthetic circuit counterparts to avoid the use of large coils when targeting relatively low frequencies. Other examples have included the emulation of negative capacitance circuits in various applications, most recently for bandgap enhancement in locally resonant piezoelectric metamaterials and metastructures. In this work, we explore synthetic impedance circuitry emulating nonlinear relationship to use in conjunction with piezoelectric structures, particularly for vibration absorption. The focus is placed on nonlinear inductance development to realize Duffing-like behavior in the synthetic impedance circuit when combined with piezoelectric capacitance and dissipative (resistive) elements. Time-domain numerical simulations, approximate analytical modeling, and series of experiments are performed for comparison. Results are demonstrated on a piezoelectric cantilever shunted to such nonlinear circuits with different nonlinear parameters and excited under mechanical base motion.

Original languageEnglish
Title of host publicationActive and Passive Smart Structures and Integrated Systems XVI
EditorsJae-Hung Han, Shima Shahab, Jinkyu Yang
ISBN (Electronic)9781510649613
DOIs
StatePublished - 2022
EventActive and Passive Smart Structures and Integrated Systems XVI 2022 - Virtual, Online
Duration: 4 Apr 202210 Apr 2022

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume12043
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceActive and Passive Smart Structures and Integrated Systems XVI 2022
CityVirtual, Online
Period4/04/2210/04/22

Keywords

  • Nonlinearity
  • Piezoelectricity
  • Synthetic Impedance

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