Smart Vibration Control of Magnetostrictive Nano-Plate Using Nonlocal Continuum Theory

Subject Areas : Engineering

A Ghorbanpour Arani ¹ , Z Khoddami Maraghi ² , H Khani Arani ³

1 - Faculty of Mechanical Engineering, University of Kashan--Institute of Nanoscience& Nanotechnology, University of Kashan
2 - Faculty of Mechanical Engineering, University of Kashan
3 - Faculty of Mechanical Engineering, University of Kashan

Received: 2016-02-15 Accepted : 2016-04-03 Published : 2016-06-30

Keywords: Free vibration, Magnetostrictive rectangular nano-plate, A new trigonometric/tangential shear deformation theory, Control feedback system,

Abstract :

In this research, a control feedback system is used to study the free vibration response of rectangular plate made of magnetostrictive material (MsM) for the first time. A new trigonometric higher order shear deformation plate theory are utilized and the results of them are compared with two theories in order to clarify their accuracy and errors. Pasternak foundation is selected to modelling of elastic medium due to considering both normal and shears modulus. Also in-plane forces are uniformly applied on magnetostrictive nano-plate (MsNP) in x and y directions. Nonlocal motion equations are derived using Hamilton’s principle and solved by differential quadrature method (DQM) considering different boundary conditions. Results indicate the effect of various parameters such as aspect ratio, thickness ratio, elastic medium, compression and tension loads and small scale effect on vibration behaviour of MsNP especially the controller effect of velocity feedback gain to minimizing the frequency. These finding can be used to active noise and vibration cancellation systems in micro and nano smart structures.

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