Nonlinear modal interactions to improve the broadband transduction of vibratory energy harvesters

Li Qun Chen, Wen An Jiang, Meghashyam Panyam, Mohammed F. Daqaq

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

Abstract

This article exploits nonlinear modal interactions, namely, a two-To-one internal resonance energy pump to improve the steady-state bandwidth of vibratory energy harvesters. To demonstrate the enhanced performance, an L-shaped cantilevered structure laminated with a piezoelectric patch and augmented with frequency tuning magnets is considered. The magnets serve to adjust the first two modal frequencies of the structure such that the second modal frequency is twice that of the first mode activating a nonlinear energy transfer mechanism. The structure is then subjected to a harmonic excitation with a frequency close to the first modal frequency of the structure. The voltage frequency-response curves are generated for different excitation levels, illustrating an improved bandwidth and output voltage over a case involving no nonlinearly-interacting modes.

Original languageEnglish (US)
Title of host publicationIntegrated System Design and Implementation; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting
PublisherAmerican Society of Mechanical Engineers
ISBN (Electronic)9780791857304
DOIs
StatePublished - 2015
EventASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2015 - Colorado Springs, United States
Duration: Sep 21 2015Sep 23 2015

Publication series

NameASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2015
Volume2

Other

OtherASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2015
CountryUnited States
CityColorado Springs
Period9/21/159/23/15

Keywords

  • Double-jumping
  • Energy Harvesting
  • Internal resonance
  • Nonlinear

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Control and Systems Engineering
  • Mechanics of Materials
  • Building and Construction

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  • Cite this

    Chen, L. Q., Jiang, W. A., Panyam, M., & Daqaq, M. F. (2015). Nonlinear modal interactions to improve the broadband transduction of vibratory energy harvesters. In Integrated System Design and Implementation; Structural Health Monitoring; Bioinspired Smart Materials and Systems; Energy Harvesting (ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems, SMASIS 2015; Vol. 2). American Society of Mechanical Engineers. https://doi.org/10.1115/SMASIS2015-8831