Underwater energy harvesting from base excitation of ionic polymer metal composites undergoing torsional vibrations

Youngsu Cha, Linfeng Shen, Maurizio Porfiri

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, we investigate underwater energy harvesting from torsional vibration of a patterned ionic polymer metal composite (IPMC). The IPMC design consists of a rectangular polymer strip with patterned electrodes to split the top and bottom surfaces in two equal pairs. We focus on harmonic base excitation of an IPMC, which is modeled as a slender beam with thin cross section vibrating in a viscous fluid. Torsional vibrations with large-amplitude are described using a complex hydro-dynamic function considering nonlinear hydrodynamic damping from the surrounding fluid. Along with the theoretical beam model, an electromechanical model is utilized to predict the IPMC electrical response from the torsional deformation of the beam. The integration of both models allows to predict the output voltage of the IPMC from the knowledge of the frequency and amplitude of base excitation. The theoretical predictions are validated against experiments.

Original languageEnglish (US)
Title of host publicationMechanics and Behavior of Active Materials; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting
PublisherAmerican Society of Mechanical Engineers
ISBN (Print)9780791856048
DOIs
StatePublished - Jan 1 2013
EventASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013 - Snowbird, UT, United States
Duration: Sep 16 2013Sep 18 2013

Publication series

NameASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013
Volume2

Other

OtherASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013
CountryUnited States
CitySnowbird, UT
Period9/16/139/18/13

ASJC Scopus subject areas

  • Artificial Intelligence
  • Civil and Structural Engineering

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  • Cite this

    Cha, Y., Shen, L., & Porfiri, M. (2013). Underwater energy harvesting from base excitation of ionic polymer metal composites undergoing torsional vibrations. In Mechanics and Behavior of Active Materials; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting [V002T07A012] (ASME 2013 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2013; Vol. 2). American Society of Mechanical Engineers. https://doi.org/10.1115/SMASIS2013-3125