Experimentally Verified Analytical Models of Piezoelectric Cantilevers in Different Design Configurations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F21%3APU141774" target="_blank" >RIV/00216305:26210/21:PU141774 - isvavai.cz</a>

Alternative codes found

RIV/68378271:_____/21:00563615

Result on the web

<a href="https://www.mdpi.com/1424-8220/21/20/6759" target="_blank" >https://www.mdpi.com/1424-8220/21/20/6759</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/s21206759" target="_blank" >10.3390/s21206759</a>

Result language

angličtina

Original language name

Experimentally Verified Analytical Models of Piezoelectric Cantilevers in Different Design Configurations

Original language description

This paper deals with analytical modelling of piezoelectric energy harvesting systems for generating useful electricity from ambient vibrations and comparing the usefulness of materials commonly used in designing such harvesters for energy harvesting applications. The kinetic energy harvesters have the potential to be used as an autonomous source of energy for wireless applications. Here in this paper, the considered energy harvesting device is designed as a piezoelectric cantilever beam with different piezoelectric materials in both bimorph and unimorph configurations. For both these configurations a single degree-of-freedom model of a kinematically excited cantilever with a full and partial electrode length respecting the dimensions of added tip mass is derived. The analytical model is based on Euler-Bernoulli beam theory and its output is successfully verified with available experimental results of piezoelectric energy harvesters in three different configurations. The electrical output of the derived model for the three different materials (PZT-5A, PZZN-PLZT and PVDF) and design configurations is in accordance with lab measurements which are presented in the paper. Therefore, this model can be used for predicting the amount of harvested power in a particular vibratory environment. Finally, the derived analytical model was used to compare the energy harvesting effectiveness of the three considered materials for both simple harmonic excitation and random vibrations of the corresponding harvesters. The comparison revealed that both PZT-5A and PZZN-PLZT are an excellent choice for energy harvesting purposes thanks to high electrical power output, whereas PVDF should be used only for sensing applications due to low harvested electrical power output.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

21101 - Food and beverages

Project

<a href="/en/project/GA19-17457S" target="_blank" >GA19-17457S: Manufacturing and analysis of flexible piezoelectric layers for smart engineering</a><br>

Continuities

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

Publication year

2021

Confidentiality

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

Name of the periodical

SENSORS

ISSN

1424-8220

e-ISSN

1424-3210

Volume of the periodical

21

Issue of the periodical within the volume

20

Country of publishing house

CH - SWITZERLAND

Number of pages

22

Pages from-to

6759-6759

UT code for WoS article

000716308600001

EID of the result in the Scopus database

2-s2.0-85116820750