A composite beam with dual bistability for enhanced vibration energy harvesting

Peter Harris, Grzegorz Litak, Chris R. Bowen, Mustafa Arafa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper a bistable composite cantilever beam comprising asymmetric laminates is studied for vibration energy harvesting applications. An additional magnetic bistability is introduced to the harvesting system to lower the level of excitation that triggers the snap-through for the cantilever from one stable state to another, while retaining the favorable broadband performance. In order to achieve the, the cantilever beam is fitted with a permanent magnet at its tip that is oriented so that there is magnetic repulsion with a stationary magnet. The system performance can be adjusted by varying the separation between the magnets. Experimental results reveal that the use of magnetic bistability enhances broadband performance and improves the output power within a certain level of drive level and magnet separation. The load-deflection characteristic of the bistable beam is experimentally determined, and is subsequently used to model the system by a reduced single-degree-of-freedom (SDOF) system having the form of the Duffing equation for a double-well potential system. The dynamics of the beam are investigated using bifurcation diagrams and shows that the qualitative behavior given by the experimentally measured response is predicted well by the simple SDOF model.

Original languageEnglish
Title of host publicationEnergy Harvesting and Storage
Subtitle of host publicationMaterials, Devices, and Applications VII
EditorsN. K. Dhar, A. K. Dutta
PublisherSPIE
ISBN (Print)9781510601062
DOIs
Publication statusPublished - 2016
EventEnergy Harvesting and Storage: Materials, Devices, and Applications VII - Baltimore, USA United States
Duration: 19 Apr 2016 → …

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume9865

Conference

ConferenceEnergy Harvesting and Storage: Materials, Devices, and Applications VII
CountryUSA United States
CityBaltimore
Period19/04/16 → …

Fingerprint

magnets
cantilever beams
vibration
composite materials
degrees of freedom
broadband
retaining
permanent magnets
laminates
energy
deflection
actuators
diagrams
output
excitation

Keywords

  • bistable
  • composites
  • energy harvesting
  • modelling
  • Piezoelectric

Cite this

Harris, P., Litak, G., Bowen, C. R., & Arafa, M. (2016). A composite beam with dual bistability for enhanced vibration energy harvesting. In N. K. Dhar, & A. K. Dutta (Eds.), Energy Harvesting and Storage: Materials, Devices, and Applications VII [98650K] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9865). SPIE. https://doi.org/10.1117/12.2225144

A composite beam with dual bistability for enhanced vibration energy harvesting. / Harris, Peter; Litak, Grzegorz; Bowen, Chris R.; Arafa, Mustafa.

Energy Harvesting and Storage: Materials, Devices, and Applications VII. ed. / N. K. Dhar; A. K. Dutta. SPIE, 2016. 98650K (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 9865).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Harris, P, Litak, G, Bowen, CR & Arafa, M 2016, A composite beam with dual bistability for enhanced vibration energy harvesting. in NK Dhar & AK Dutta (eds), Energy Harvesting and Storage: Materials, Devices, and Applications VII., 98650K, Proceedings of SPIE - The International Society for Optical Engineering, vol. 9865, SPIE, Energy Harvesting and Storage: Materials, Devices, and Applications VII, Baltimore, USA United States, 19/04/16. https://doi.org/10.1117/12.2225144
Harris P, Litak G, Bowen CR, Arafa M. A composite beam with dual bistability for enhanced vibration energy harvesting. In Dhar NK, Dutta AK, editors, Energy Harvesting and Storage: Materials, Devices, and Applications VII. SPIE. 2016. 98650K. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.2225144
Harris, Peter ; Litak, Grzegorz ; Bowen, Chris R. ; Arafa, Mustafa. / A composite beam with dual bistability for enhanced vibration energy harvesting. Energy Harvesting and Storage: Materials, Devices, and Applications VII. editor / N. K. Dhar ; A. K. Dutta. SPIE, 2016. (Proceedings of SPIE - The International Society for Optical Engineering).
@inproceedings{2e19dbf9c0a14a3ea4480b1555788206,
title = "A composite beam with dual bistability for enhanced vibration energy harvesting",
abstract = "In this paper a bistable composite cantilever beam comprising asymmetric laminates is studied for vibration energy harvesting applications. An additional magnetic bistability is introduced to the harvesting system to lower the level of excitation that triggers the snap-through for the cantilever from one stable state to another, while retaining the favorable broadband performance. In order to achieve the, the cantilever beam is fitted with a permanent magnet at its tip that is oriented so that there is magnetic repulsion with a stationary magnet. The system performance can be adjusted by varying the separation between the magnets. Experimental results reveal that the use of magnetic bistability enhances broadband performance and improves the output power within a certain level of drive level and magnet separation. The load-deflection characteristic of the bistable beam is experimentally determined, and is subsequently used to model the system by a reduced single-degree-of-freedom (SDOF) system having the form of the Duffing equation for a double-well potential system. The dynamics of the beam are investigated using bifurcation diagrams and shows that the qualitative behavior given by the experimentally measured response is predicted well by the simple SDOF model.",
keywords = "bistable, composites, energy harvesting, modelling, Piezoelectric",
author = "Peter Harris and Grzegorz Litak and Bowen, {Chris R.} and Mustafa Arafa",
year = "2016",
doi = "10.1117/12.2225144",
language = "English",
isbn = "9781510601062",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Dhar, {N. K. } and Dutta, {A. K.}",
booktitle = "Energy Harvesting and Storage",
address = "USA United States",

}

TY - GEN

T1 - A composite beam with dual bistability for enhanced vibration energy harvesting

AU - Harris, Peter

AU - Litak, Grzegorz

AU - Bowen, Chris R.

AU - Arafa, Mustafa

PY - 2016

Y1 - 2016

N2 - In this paper a bistable composite cantilever beam comprising asymmetric laminates is studied for vibration energy harvesting applications. An additional magnetic bistability is introduced to the harvesting system to lower the level of excitation that triggers the snap-through for the cantilever from one stable state to another, while retaining the favorable broadband performance. In order to achieve the, the cantilever beam is fitted with a permanent magnet at its tip that is oriented so that there is magnetic repulsion with a stationary magnet. The system performance can be adjusted by varying the separation between the magnets. Experimental results reveal that the use of magnetic bistability enhances broadband performance and improves the output power within a certain level of drive level and magnet separation. The load-deflection characteristic of the bistable beam is experimentally determined, and is subsequently used to model the system by a reduced single-degree-of-freedom (SDOF) system having the form of the Duffing equation for a double-well potential system. The dynamics of the beam are investigated using bifurcation diagrams and shows that the qualitative behavior given by the experimentally measured response is predicted well by the simple SDOF model.

AB - In this paper a bistable composite cantilever beam comprising asymmetric laminates is studied for vibration energy harvesting applications. An additional magnetic bistability is introduced to the harvesting system to lower the level of excitation that triggers the snap-through for the cantilever from one stable state to another, while retaining the favorable broadband performance. In order to achieve the, the cantilever beam is fitted with a permanent magnet at its tip that is oriented so that there is magnetic repulsion with a stationary magnet. The system performance can be adjusted by varying the separation between the magnets. Experimental results reveal that the use of magnetic bistability enhances broadband performance and improves the output power within a certain level of drive level and magnet separation. The load-deflection characteristic of the bistable beam is experimentally determined, and is subsequently used to model the system by a reduced single-degree-of-freedom (SDOF) system having the form of the Duffing equation for a double-well potential system. The dynamics of the beam are investigated using bifurcation diagrams and shows that the qualitative behavior given by the experimentally measured response is predicted well by the simple SDOF model.

KW - bistable

KW - composites

KW - energy harvesting

KW - modelling

KW - Piezoelectric

UR - http://www.scopus.com/inward/record.url?scp=84983371295&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1117/12.2225144

U2 - 10.1117/12.2225144

DO - 10.1117/12.2225144

M3 - Conference contribution

SN - 9781510601062

T3 - Proceedings of SPIE - The International Society for Optical Engineering

BT - Energy Harvesting and Storage

A2 - Dhar, N. K.

A2 - Dutta, A. K.

PB - SPIE

ER -