Mathematical modeling of an active-fiber composite energy harvester with interdigitated electrodes

A. Jemai, F. Najar, M. Chafra, Z. Ounaies

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The use of active-fiber composites (AFC) instead of traditional ceramic piezoelectric materials is motivated by flexibility and relatively high actuation capacity. Nevertheless, their energy harvesting capabilities remain low. As a first step toward the enhancement of AFC's performances, a mathematical model that accurately simulates the dynamic behavior of the AFC is proposed. In fact, most of the modeling approaches found in the literature for AFC are based on finite element methods. In this work, we use homogenization techniques to mathematically describe piezoelectric properties taking into consideration the composite structure of the AFC. We model the interdigitated electrodes as a series of capacitances and current sources linked in parallel; then we integrate these properties into the structural model of the AFC. The proposed model is incorporated into a vibration based energy harvesting system consisting of a cantilever beam on top of which an AFC patch is attached. Finally, analytical solutions of the dynamic behavior and the harvested voltage are proposed and validated with finite element simulations.

Original languageEnglish (US)
Article number971597
JournalShock and Vibration
Volume2014
DOIs
StatePublished - 2014

Fingerprint

Harvesters
fiber composites
electrode
Electrodes
electrodes
Fibers
Composite materials
modeling
energy
Energy harvesting
automatic frequency control
Piezoelectric materials
cantilever beams
piezoelectric ceramics
composite structures
Cantilever beams
homogenizing
Composite structures
actuation
Vibrations (mechanical)

All Science Journal Classification (ASJC) codes

  • Civil and Structural Engineering
  • Condensed Matter Physics
  • Geotechnical Engineering and Engineering Geology
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

@article{7b9ad19d470e419a9337708f0ef84202,
title = "Mathematical modeling of an active-fiber composite energy harvester with interdigitated electrodes",
abstract = "The use of active-fiber composites (AFC) instead of traditional ceramic piezoelectric materials is motivated by flexibility and relatively high actuation capacity. Nevertheless, their energy harvesting capabilities remain low. As a first step toward the enhancement of AFC's performances, a mathematical model that accurately simulates the dynamic behavior of the AFC is proposed. In fact, most of the modeling approaches found in the literature for AFC are based on finite element methods. In this work, we use homogenization techniques to mathematically describe piezoelectric properties taking into consideration the composite structure of the AFC. We model the interdigitated electrodes as a series of capacitances and current sources linked in parallel; then we integrate these properties into the structural model of the AFC. The proposed model is incorporated into a vibration based energy harvesting system consisting of a cantilever beam on top of which an AFC patch is attached. Finally, analytical solutions of the dynamic behavior and the harvested voltage are proposed and validated with finite element simulations.",
author = "A. Jemai and F. Najar and M. Chafra and Z. Ounaies",
year = "2014",
doi = "10.1155/2014/971597",
language = "English (US)",
volume = "2014",
journal = "Shock and Vibration",
issn = "1070-9622",
publisher = "IOS Press",

}

Mathematical modeling of an active-fiber composite energy harvester with interdigitated electrodes. / Jemai, A.; Najar, F.; Chafra, M.; Ounaies, Z.

In: Shock and Vibration, Vol. 2014, 971597, 2014.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Mathematical modeling of an active-fiber composite energy harvester with interdigitated electrodes

AU - Jemai, A.

AU - Najar, F.

AU - Chafra, M.

AU - Ounaies, Z.

PY - 2014

Y1 - 2014

N2 - The use of active-fiber composites (AFC) instead of traditional ceramic piezoelectric materials is motivated by flexibility and relatively high actuation capacity. Nevertheless, their energy harvesting capabilities remain low. As a first step toward the enhancement of AFC's performances, a mathematical model that accurately simulates the dynamic behavior of the AFC is proposed. In fact, most of the modeling approaches found in the literature for AFC are based on finite element methods. In this work, we use homogenization techniques to mathematically describe piezoelectric properties taking into consideration the composite structure of the AFC. We model the interdigitated electrodes as a series of capacitances and current sources linked in parallel; then we integrate these properties into the structural model of the AFC. The proposed model is incorporated into a vibration based energy harvesting system consisting of a cantilever beam on top of which an AFC patch is attached. Finally, analytical solutions of the dynamic behavior and the harvested voltage are proposed and validated with finite element simulations.

AB - The use of active-fiber composites (AFC) instead of traditional ceramic piezoelectric materials is motivated by flexibility and relatively high actuation capacity. Nevertheless, their energy harvesting capabilities remain low. As a first step toward the enhancement of AFC's performances, a mathematical model that accurately simulates the dynamic behavior of the AFC is proposed. In fact, most of the modeling approaches found in the literature for AFC are based on finite element methods. In this work, we use homogenization techniques to mathematically describe piezoelectric properties taking into consideration the composite structure of the AFC. We model the interdigitated electrodes as a series of capacitances and current sources linked in parallel; then we integrate these properties into the structural model of the AFC. The proposed model is incorporated into a vibration based energy harvesting system consisting of a cantilever beam on top of which an AFC patch is attached. Finally, analytical solutions of the dynamic behavior and the harvested voltage are proposed and validated with finite element simulations.

UR - http://www.scopus.com/inward/record.url?scp=84901802689&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84901802689&partnerID=8YFLogxK

U2 - 10.1155/2014/971597

DO - 10.1155/2014/971597

M3 - Article

AN - SCOPUS:84901802689

VL - 2014

JO - Shock and Vibration

JF - Shock and Vibration

SN - 1070-9622

M1 - 971597

ER -