Mechanic of Advanced and Smart Materials
Quarterly

Piezoelectric Energy Harvesting from Functionally Graded Beams Using Modified Shear Deformation Theories

Document Type : Original Article

Authors

Korosh Khorshidi 1
Mahdi Karimi 1
Mehdi Rezaeisaray 2

1 Department of Mechanical Engineering, Arak University, Arak, 38156-88349, Iran

2 Mechanical Engineering Department, University of Alberta, Edmonton, Alberta, Canada

https://doi.org/10.52547/masm.1.2.136
Abstract
In the current paper, the piezoelectric energy harvesting of inhomogeneous beams based on modified beam models is studied. Different classical boundary conditions, which are combination of free, simply and clamped, are contemplated for the structure. The beam mechanical properties are assumed to vary based on the power law along the thickness direction in which volume fractions of the ceramic and metal part can be adjusted using FG parameter. Here, various beam theories such as Euler-Bernoulli, exponential, trigonometric, hyperbolic and fifth-order are modelled using a unified formulation. These beam theories are capable of catching rotary inertia effects and transverse shear deformations. The vibrational performance of the beam is affected by the harmonic vibrations of the base. Additionally, two different dampings including structural damping and viscous damping are modelled in the current formulation. Transverse deflection of the beam is obtained using modal expansion and then electrical power, current and voltage outputs are calculated. Ultimately, in the discussion section, the impacts of different parameters on the vibration and energy harvesting of the beam are analyzed.

Keywords

Energy harvesting
Functionally graded
Modified theories
Piezoelectric
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Mechanic of Advanced and Smart Materials
Volume 1, Issue 2
Winter 2022
Pages 136-154

  • Receive Date 22 September 2021
  • Revise Date 24 October 2021
  • Accept Date 15 January 2022

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