Optimization of the electro-mechanical response of the multilayer piezoelectric energy harvester

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F18%3APU130484" target="_blank" >RIV/00216305:26210/18:PU130484 - isvavai.cz</a>

Výsledek na webu

<a href="https://mechatronika.fel.cvut.cz/" target="_blank" >https://mechatronika.fel.cvut.cz/</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Optimization of the electro-mechanical response of the multilayer piezoelectric energy harvester

Popis výsledku v původním jazyce

In this contribution, a design of novel cantilever beam energy harvester, composed of several ceramic layers with introduced high residual stresses, is proposed. The main aim of residual stresses is to protect the piezoelectric layer from cracking during the service of the harvester. A way to optimize composition of the multilayer energy harvester to receive both high apparent fracture toughness of the structure and simultaneously high electrical power of the harvester during its operation is presented. Both an analytical and a numerical model of the vibrational energy harvester are developed for this purpose. The increased resistance to fracture is achieved by means of high compressive stresses in the external ceramic layers. The electrical power output of the harvester is further optimized with respect to connected resistive load and excitation acceleration of vibrations. It was found that the optimal resistive load also leads to lowest mechanical stresses in particular laminate layers.

Název v anglickém jazyce

Optimization of the electro-mechanical response of the multilayer piezoelectric energy harvester

Popis výsledku anglicky

In this contribution, a design of novel cantilever beam energy harvester, composed of several ceramic layers with introduced high residual stresses, is proposed. The main aim of residual stresses is to protect the piezoelectric layer from cracking during the service of the harvester. A way to optimize composition of the multilayer energy harvester to receive both high apparent fracture toughness of the structure and simultaneously high electrical power of the harvester during its operation is presented. Both an analytical and a numerical model of the vibrational energy harvester are developed for this purpose. The increased resistance to fracture is achieved by means of high compressive stresses in the external ceramic layers. The electrical power output of the harvester is further optimized with respect to connected resistive load and excitation acceleration of vibrations. It was found that the optimal resistive load also leads to lowest mechanical stresses in particular laminate layers.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20302 - Applied mechanics

Projekt

<a href="/cs/project/GA17-08153S" target="_blank" >GA17-08153S: Nové materiálové architektury pro SMART piezokeramické elektromechanické měniče</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

Proceedings of the 2018 18th International Conference on Mechatronics – Mechatronika (ME)

ISBN

978-80-214-5543-6

ISSN

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e-ISSN

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Počet stran výsledku

6

Strana od-do

143-148

Název nakladatele

Brno University of Technolgy, 2018

Místo vydání

Brno

Místo konání akce

Brno

Datum konání akce

5. 12. 2018

Typ akce podle státní příslušnosti

CST - Celostátní akce

Kód UT WoS článku

000465104200023