Topology Optimisation for High Frequency Vibration Energy Harvesting

Topology Optimisation for High Frequency Vibration Energy Harvesting

David J. Munk, Ethan J. G. Ellul, Scott D. Moss

Abstract. Topology optimisation has been used to design a piezoelectric energy harvester capable of harvesting the vibration present on a helicopter gearbox. The gearbox vibrations, with frequencies in the kilo-hertz range and having amplitudes of 10-100g (where g = 9.81 m/s2), are generated by gear-meshing within the transmission. These accelerations, large in amplitude and high in frequency, are ideal sources for vibration energy harvesting, with the harvested power potentially used to power autonomous condition-based-maintenance systems. This paper will discuss the first and simplest of the harvesters that were designed and manufactured, i.e. a 0.51 mm thick spring steel cantilever that uses a Pz27 piezoceramic transducer, which is sensitive to 1900 Hz gearbox vibrations and can produce 300 µW from a 2g host acceleration.

Keywords
Vibration Energy Harvesting, Topology Optimisation, Helicopter Gearbox

Published online 2/20/2021, 11 pages
Copyright © 2021 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: David J. Munk, Ethan J. G. Ellul, Scott D. Moss, Topology Optimisation for High Frequency Vibration Energy Harvesting, Materials Research Proceedings, Vol. 18, pp 10-20, 2021

DOI: https://doi.org/10.21741/9781644901311-2

The article was published as article 2 of the book Structural Health Monitoring

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 licence. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

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