Energy harvesting via wrinkling instabilities
Name
013901_1_online.pdf
Description
Published version
Size
683.78 KB
Format
Adobe PDF
Checksum (MD5)
7b3cce8d7ef0ba422c1964314e7591a9
Author(s)
Haji Hosseinloo, Ashkan
Turitsyn, Konstantin
Date Issued
January 2, 2017
Journal
Applied Physics Letters
Publisher
AIP Publishing
Citation
Ashkan Haji Hosseinloo, Konstantin Turitsyn; Energy harvesting via wrinkling instabilities. Appl. Phys. Lett. 2 January 2017; 110 (1): 013901.
Version
Final published version
Abstract
Conventional vibratory energy harvesters, working based on linear resonance, suffer from narrow bandwidth and are very inefficient at small scale for low frequency harvesting. Here, to improve the harvesting effectiveness, we propose to exploit surface instability or in general instability in layered composites where intriguing morphological patterns with large strain are formed under compressive loads. The induced large strains, which are independent of the excitation frequency, could be exploited to give rise to large strains in an attached piezoelectric layer to generate charge and, hence, energy. In this study, we particularly focus on wrinkling of a stiff interfacial layer embedded within a soft matrix. We derive the governing dynamical equation of thin piezoelectric patches attached at the peaks and troughs of the wrinkles. Results show that wrinkling could help to increase the harvested power by more than an order of magnitude.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Terms of Use
Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1063/1.4973524
