Nonlinear dynamics in PEH for enhanced power output and vibration suppression in metastructures

Hossein Alimohammadi*, Kristina Vassiljeva, S. Hassan HosseinNia, Eduard Petlenkov

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

Abstract

This study delves into the nonlinear dynamics of metamaterials, exploring the dual objective of enhancing power output and achieving vibration suppression through piezoelectric energy harvesters (PEHs). Our approach is structured into a sequence of increasingly complex models that bridge mechanical resonators with their electromechanical counterparts. We initiate with (1) modeling mechanical resonators, incorporating nonlinear behaviors that are often overlooked in the linear domain. This lays the groundwork for understanding the fundamental mechanisms of vibration within metamaterials. Subsequently, we progress to (2) electromechanical resonators, where piezoelectric components are integrated, revealing a richer dynamic landscape that is influenced by the interplay of mechanical and electrical energies. The latter sections of our investigation introduce and examine (3) mechanical and (4) electromechanical internally coupled resonators. These segments unveil the role of internal couplings in steering the metamaterial’s energy harvesting capabilities and its resilience to vibrational disturbances. Through meticulous simulations and analysis, the research brings to light the significant influence of specific PEH nonlinear parameters on the system’s efficiency, offering insights for the optimization of PEHs in practical applications.

Original languageEnglish
Pages (from-to)12941-12963
Number of pages23
JournalNonlinear Dynamics
Volume112
Issue number15
DOIs
Publication statusPublished - 2024

Bibliographical note

Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care
Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

Keywords

  • Electromechanical nonlinearity
  • Internally coupled resonators
  • Lumped parameter model
  • Nonlinear dynamics
  • Piezoelectric energy harvesting
  • Vibration suppression

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