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    Rights statement: The final, definitive version of this article has been published in the Journal, Journal of Intelligent Materials Systems and Structures, 28 (18), 2017, © SAGE Publications Ltd, 2017 by SAGE Publications Ltd at the Journal of Intelligent Materials Systems and Structures page: http://journals.sagepub.com/jim on SAGE Journals Online: http://journals.sagepub.com/

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Metamodel-assisted design optimization of piezoelectric flex transducer for maximal bio-kinetic energy conversion

Research output: Contribution to journalJournal article

Published
<mark>Journal publication date</mark>1/11/2017
<mark>Journal</mark>Journal of Intelligent Material Systems and Structures
Issue number18
Volume28
Number of pages11
Pages (from-to)2528-2538
Publication StatusPublished
Early online date1/02/17
<mark>Original language</mark>English

Abstract

Energy-harvesting devices have been widely used to generate electrical power from the bio-kinetic energy of human body movement. A novel piezoelectric flex transducer based on the Cymbal device has been proposed by other researchers for the purpose of energy harvesting. To further improve the efficiency of the device, optimal design of the piezoelectric flex transducer for maximum output power subject to stress and displacement constraints is carried out in
this article. Sequential quadratic programming on metamodels generated with genetic programming from a 140-point optimal Latin hypercube design of experiments is used in the optimization. Finally, the optimal design is validated by finite element simulations. The simulations show that the magnitude of the electrical power generated from this optimal piezoelectric flex transducer harvesting device can be up to 6.5 MW when a safety design factor of 2.0 is applied.

Bibliographic note

The final, definitive version of this article has been published in the Journal, Journal of Intelligent Materials Systems and Structures, 28 (18), 2017, © SAGE Publications Ltd, 2017 by SAGE Publications Ltd at the Journal of Intelligent Materials Systems and Structures page: http://journals.sagepub.com/jim on SAGE Journals Online: http://journals.sagepub.com/