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Title: Multi-directional energy harvesting by piezoelectric cantilever-pendulum with internal resonance

This letter reports a piezoelectric cantilever-pendulum design for multi-directional energy harvesting. A pendulum is attached to the tip of a piezoelectric cantilever-type energy harvester. This design aims at taking advantage of the nonlinear coupling between the pendulum motion in 3-dimensional space and the beam bending vibration at resonances. Experimental studies indicate that, under properly chosen parameters, 1:2 internal resonance can be induced, which enables the multi-directional energy harvesting with a single cantilever. The advantages of the design with respect to traditional piezoelectric cantilever are examined.
Authors:
;  [1]
  1. Department of Mechanical Engineering, The University of Connecticut, Storrs, Connecticut 06269 (United States)
Publication Date:
OSTI Identifier:
22486139
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 107; Journal Issue: 21; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COUPLING; DESIGN; MECHANICAL VIBRATIONS; NONLINEAR PROBLEMS; OSCILLATIONS; PIEZOELECTRICITY; RESONANCE; SPACE; THREE-DIMENSIONAL CALCULATIONS; TIME MEASUREMENT