Journal
JOURNAL OF SOUND AND VIBRATION
Volume 399, Issue -, Pages 216-227Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jsv.2017.03.031
Keywords
Vibration energy harvesting; Renewable energy; Low-frequency vibration; Frequency up-conversion; Negative stiffness; Snap-through oscillators
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Funding
- National Science Foundation [CMMI-1030377]
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A novel experimental energy harvester is investigated for its energy harvesting capability by frequency up-conversion using snap-through structures. In particular, a single-degree of-freedom (SDOF) experimental energy harvester model is built using a snap-through nonlinear element. The snap-through dynamics is facilitated by the experimental setup of a twinkling energy generator (TEG) consisting of linear springs and attracting cylindrical bar magnets. A cylindrical coil of enamel-coated magnet wire is used as the energy generator. The governing equations are formulated mathematically and solved numerically for a direct comparison with the experimental results. The experimental TEG and the numerical simulation results show 25-fold frequency up-conversion and the power harvesting capacity of the SDOF TEG. (C) 2017 Elsevier Ltd. All rights reserved.
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