Vibration confinement and energy harvesting in flexible structures using collocated absorbers and piezoelectric devices

M. Ouled Chtiba, S. Choura, A. H. Nayfeh, Sami El-Borgi

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

We propose an optimal design for supplementing flexible structures with a set of absorbers and piezoelectric devices for vibration confinement and energy harvesting. We assume that the original structure is sensitive to vibrations and that the absorbers are the elements where the vibration energy is confined and then harvested by means of piezoelectric devices. The design of the additional mechanical and electrical components is formulated as a dynamic optimization problem in which the objective function is the total energy of the uncontrolled structure. The locations, masses, stiffnesses, and damping coefficients of these absorbers and capacitances, load resistances, and electromechanical coupling coefficients are optimized to minimize the total energy of the structure. We use the Galerkin procedure to discretize the equations of motion that describe the coupled dynamics of the flexible structure and the added absorbers and harvesting devices. We develop a numerical code that determines the unknown parameters of a pre-specified set of absorbers and harvesting components. We input a set of initial values for these parameters, and the code updates them while minimizing the total energy in the uncontrolled structure. To illustrate the proposed design, we consider a simply supported beam with harmonic external excitations. Here, we consider two possible configurations for each of the additional piezoelectric devices, either embedded between the structure and the absorbers or between the ground and absorbers. We present simulations of the harvested power and associated voltage for each pair of collocated absorber and piezoelectric device. The simulated responses of the beam show that its energy is confined and harvested simultaneously.

Original languageEnglish
Pages (from-to)261-276
Number of pages16
JournalJournal of Sound and Vibration
Volume329
Issue number3
DOIs
Publication statusPublished - 1 Feb 2010
Externally publishedYes

Fingerprint

Piezoelectric devices
Flexible structures
Energy harvesting
Vibrations (mechanical)
absorbers
vibration
Electromechanical coupling
energy
Equations of motion
Capacitance
Damping
Stiffness
Electric potential
coupling coefficients
stiffness
equations of motion
damping
capacitance
harmonics
optimization

ASJC Scopus subject areas

  • Acoustics and Ultrasonics
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Vibration confinement and energy harvesting in flexible structures using collocated absorbers and piezoelectric devices. / Ouled Chtiba, M.; Choura, S.; Nayfeh, A. H.; El-Borgi, Sami.

In: Journal of Sound and Vibration, Vol. 329, No. 3, 01.02.2010, p. 261-276.

Research output: Contribution to journalArticle

@article{8be2c86eb6db4d38b1fb152ec76597b3,
title = "Vibration confinement and energy harvesting in flexible structures using collocated absorbers and piezoelectric devices",
abstract = "We propose an optimal design for supplementing flexible structures with a set of absorbers and piezoelectric devices for vibration confinement and energy harvesting. We assume that the original structure is sensitive to vibrations and that the absorbers are the elements where the vibration energy is confined and then harvested by means of piezoelectric devices. The design of the additional mechanical and electrical components is formulated as a dynamic optimization problem in which the objective function is the total energy of the uncontrolled structure. The locations, masses, stiffnesses, and damping coefficients of these absorbers and capacitances, load resistances, and electromechanical coupling coefficients are optimized to minimize the total energy of the structure. We use the Galerkin procedure to discretize the equations of motion that describe the coupled dynamics of the flexible structure and the added absorbers and harvesting devices. We develop a numerical code that determines the unknown parameters of a pre-specified set of absorbers and harvesting components. We input a set of initial values for these parameters, and the code updates them while minimizing the total energy in the uncontrolled structure. To illustrate the proposed design, we consider a simply supported beam with harmonic external excitations. Here, we consider two possible configurations for each of the additional piezoelectric devices, either embedded between the structure and the absorbers or between the ground and absorbers. We present simulations of the harvested power and associated voltage for each pair of collocated absorber and piezoelectric device. The simulated responses of the beam show that its energy is confined and harvested simultaneously.",
author = "{Ouled Chtiba}, M. and S. Choura and Nayfeh, {A. H.} and Sami El-Borgi",
year = "2010",
month = "2",
day = "1",
doi = "10.1016/j.jsv.2009.09.028",
language = "English",
volume = "329",
pages = "261--276",
journal = "Journal of Sound and Vibration",
issn = "0022-460X",
publisher = "Academic Press Inc.",
number = "3",

}

TY - JOUR

T1 - Vibration confinement and energy harvesting in flexible structures using collocated absorbers and piezoelectric devices

AU - Ouled Chtiba, M.

AU - Choura, S.

AU - Nayfeh, A. H.

AU - El-Borgi, Sami

PY - 2010/2/1

Y1 - 2010/2/1

N2 - We propose an optimal design for supplementing flexible structures with a set of absorbers and piezoelectric devices for vibration confinement and energy harvesting. We assume that the original structure is sensitive to vibrations and that the absorbers are the elements where the vibration energy is confined and then harvested by means of piezoelectric devices. The design of the additional mechanical and electrical components is formulated as a dynamic optimization problem in which the objective function is the total energy of the uncontrolled structure. The locations, masses, stiffnesses, and damping coefficients of these absorbers and capacitances, load resistances, and electromechanical coupling coefficients are optimized to minimize the total energy of the structure. We use the Galerkin procedure to discretize the equations of motion that describe the coupled dynamics of the flexible structure and the added absorbers and harvesting devices. We develop a numerical code that determines the unknown parameters of a pre-specified set of absorbers and harvesting components. We input a set of initial values for these parameters, and the code updates them while minimizing the total energy in the uncontrolled structure. To illustrate the proposed design, we consider a simply supported beam with harmonic external excitations. Here, we consider two possible configurations for each of the additional piezoelectric devices, either embedded between the structure and the absorbers or between the ground and absorbers. We present simulations of the harvested power and associated voltage for each pair of collocated absorber and piezoelectric device. The simulated responses of the beam show that its energy is confined and harvested simultaneously.

AB - We propose an optimal design for supplementing flexible structures with a set of absorbers and piezoelectric devices for vibration confinement and energy harvesting. We assume that the original structure is sensitive to vibrations and that the absorbers are the elements where the vibration energy is confined and then harvested by means of piezoelectric devices. The design of the additional mechanical and electrical components is formulated as a dynamic optimization problem in which the objective function is the total energy of the uncontrolled structure. The locations, masses, stiffnesses, and damping coefficients of these absorbers and capacitances, load resistances, and electromechanical coupling coefficients are optimized to minimize the total energy of the structure. We use the Galerkin procedure to discretize the equations of motion that describe the coupled dynamics of the flexible structure and the added absorbers and harvesting devices. We develop a numerical code that determines the unknown parameters of a pre-specified set of absorbers and harvesting components. We input a set of initial values for these parameters, and the code updates them while minimizing the total energy in the uncontrolled structure. To illustrate the proposed design, we consider a simply supported beam with harmonic external excitations. Here, we consider two possible configurations for each of the additional piezoelectric devices, either embedded between the structure and the absorbers or between the ground and absorbers. We present simulations of the harvested power and associated voltage for each pair of collocated absorber and piezoelectric device. The simulated responses of the beam show that its energy is confined and harvested simultaneously.

UR - http://www.scopus.com/inward/record.url?scp=70350619873&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=70350619873&partnerID=8YFLogxK

U2 - 10.1016/j.jsv.2009.09.028

DO - 10.1016/j.jsv.2009.09.028

M3 - Article

VL - 329

SP - 261

EP - 276

JO - Journal of Sound and Vibration

JF - Journal of Sound and Vibration

SN - 0022-460X

IS - 3

ER -