Dramatic effect of uid damping on the performance of a nonlinear M-shaped broadband energy harvester

Christopher Sugino, David Tan, Stephen Leadenham, Alper Erturk

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

Abstract

This work aims to demonstrate the detrimental effect of fluid damping on the bandwidth of a flexible nonlinear energy harvester and thereby further enhance the performance by minimizing nonlinear damping. A vacuum setup has been introduced to conduct nonlinear base excitation experiments at different air pressure levels in an effort to control the quadratic (velocity-squared) damping coefficient. It is shown that reduced air pressure substantially enhances the frequency bandwidth for primary resonance excitation. The empirical electromechanical model is modified to express the fluid damping in terms of fluid pressure and validated experimentally for different excitation levels.

Original languageEnglish
Title of host publicationActive and Passive Smart Structures and Integrated Systems 2016
EditorsGyuhae Park
ISBN (Electronic)9781510600409
DOIs
StatePublished - 2016
EventActive and Passive Smart Structures and Integrated Systems 2016 - Las Vegas, United States
Duration: 21 Mar 201624 Mar 2016

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9799
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceActive and Passive Smart Structures and Integrated Systems 2016
Country/TerritoryUnited States
CityLas Vegas
Period21/03/1624/03/16

Keywords

  • Energy harvesting
  • Fluid damping
  • Nonlinear vibration

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