Dynamics of a vibrational energy harvester with a bistable beam: voltage response identification by multiscale entropy and “0-1” test

P. Harris, C. R. Bowen, H. A. Kim, G. Litak

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The use of bistable laminates is a potential approach to realize broadband piezoelectric-based energy harvesting by introducing elastic non-linearities to the system. In this paper the dynamic response of a piezoelectric material attached to a bistable laminate beam is examined based on the experimental measurement of the generated voltage-time series. The system was subjected to harmonic excitations and exhibited single-well and snap-through vibrations of both periodic and chaotic character. The ability to identify the vibration modes of the energy harvester is important since different levels of power are expected in each dynamic mode. We identify the dynamics of the selected system response using return maps, multiscale entropy, and “0-1” test. The potential of the approaches to identify periodic and chaotic modes and snap-through events in the non-linear bistable harvester is described.

LanguageEnglish
Article number109
JournalEuropean Physical Journal Plus
Volume131
Issue number4
DOIs
StatusPublished - 1 Apr 2016

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laminates
entropy
harmonic excitation
electric potential
dynamic response
vibration mode
nonlinearity
broadband
vibration
energy

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Dynamics of a vibrational energy harvester with a bistable beam : voltage response identification by multiscale entropy and “0-1” test. / Harris, P.; Bowen, C. R.; Kim, H. A.; Litak, G.

In: European Physical Journal Plus, Vol. 131, No. 4, 109, 01.04.2016.

Research output: Contribution to journalArticle

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