Vibration Response of an Elastically Connected Double-Smart Nanobeam-System Based Nano-Electro-Mechanical Sensor

Subject Areas : Engineering

A Ghorbanpour Arani ¹ (Faculty of Mechanical Engineering, University of Kashan--- Institute of Nanoscience & Nanotechnology, University of Kashan)
S.A Mortazavi ² (Faculty of Mechanical Engineering, University of Kashan)
R Kolahchi ³ (Faculty of Mechanical Engineering, University of Kashan)
A.H Ghorbanpour Arani ⁴ (Faculty of Mechanical Engineering, University of Kashan)

Received: 2015-02-12 Accepted : 2015-03-27 Published : 2015-06-30

Keywords: Exact solution, Pasternak foundation, Nonlocal vibration, DSNBSs, Timoshenko beam model,

Abstract :

Nonlocal vibration of double-smart nanobeam-systems (DSNBSs) under a moving nanoparticle is investigated in the present study based on Timoshenko beam model. The two smart nanobeams (SNB) are coupled by an enclosing elastic medium which is simulated by Pasternak foundation. The energy method and Hamilton’s principle are used to establish the equations of motion. The detailed parametric study is conducted, focusing on the combined effects of the nonlocal parameter, elastic medium coefficients, external voltage, length of SNB and the mass of attached nanoparticle on the frequency of piezoelectric nanobeam. The results depict that the imposed external voltage is an effective controlling parameter for vibration of the piezoelectric nanobeam. Also increase in the mass of attached nanoparticle gives rise to a decrease in the natural frequency. This study might be useful for the design and smart control of nano-devices.

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