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Abstract

The paper considers electrostatic energy conversion from ambient vibrations using dielectric elastomers. A novel
device for vibration energy harvesting is proposed, studied and compared with a vibroimpact device previously investigated
by the authors for the same purpose. The nonlinear dynamic behaviour of the new device is explored numerically
and the results presented indicate excellent energy harvesting capabilities with an energy density of 9:15J=kg.
The proposed device particularly benefits from stiffness nonlinearity of its dielectric membranes as is demonstrated
by comparison with their linear behaviour. The influence of nonlinearity is further investigated, with results compared
against recent reports on dielectric elastomer energy harvesting and other forms of vibration energy harvesting. Two
electrical schemes that can be used for the electrostatic energy conversion are also introduced and compared in terms
of their suitability for the proposed device.
Original languageEnglish
JournalJournal of Sound and Vibration
Early online date3 Nov 2018
DOIs
Publication statusE-pub ahead of print - 3 Nov 2018

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