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Advances in Nano Research
  Volume 14, Number 4, April 2023 , pages 335-353

Vibration control, energy harvesting and forced vibration of the piezoelectric NEMS via paradox-free local/nonlocal theory
Zohre Moradi, Farzad Ebrahimi and Mohsen Davoudi

    The possibility of energy harvesting as well as controlled vibration of a three-layered beam consisting of two piezoelectric layer and one core layer made of nonpiezoelectric material is investigated using paradox-free local/nonlocal theory. The three-layered nanobeam is resting on an elastic foundation and subjected to a blast load. Also, the core layer is made of Nano‐composites reinforced by CNTs and carbon fibers (MHCD). Governing equations as well as boundary conditions are obtained using Hamilton,s principle. The equations discretized by Generalized Differential Quadrature Method (GDQM) and solved by Newmark beta method. In addition, two differential and integral gains are employed for controlling the forced vibration. The size-dependency of the elastic foundation is considered using two-phase elasticity. The effect of elastic foundation, control gains, nonlocal factor, as well as parameters affecting the core material on the forced vibration and energy harvesting is investigated in detail. The equations as well as solution procedure is validated utilizing some compassion studies. This work can be a basis for future studies on energy harvesting and controlled vibration in small scales.
Key Words
    energy harvesting; MHCD material; two-phase electric environment; vibration control
Zohre Moradi and Mohsen Davoudi: Faculty of Engineering and Technology, Department of Electrical Engineering, Imam Khomeini International University, 34149-16818, Qazvin, Iran

Farzad Ebrahimi: Faculty of Engineering, Department of Mechanics, Imam Khomeini International University, Qazvin, Iran

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