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.
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 language | English |
|---|---|
| Pages (from-to) | 167-182 |
| Number of pages | 16 |
| Journal | Journal of Sound and Vibration |
| Volume | 442 |
| Early online date | 3 Nov 2018 |
| DOIs | |
| Publication status | Published - 3 Mar 2019 |
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Dimitry V. Val
- School of Energy, Geoscience, Infrastructure and Society - Professor
- School of Energy, Geoscience, Infrastructure and Society, Institute for Infrastructure & Environment - Professor
Person: Academic (Research & Teaching)