Applied Mathematics and Mechanics (English Edition) ›› 2018, Vol. 39 ›› Issue (4): 529-546.doi: https://doi.org/10.1007/s10483-018-2319-8

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Nonlocal buckling of embedded magnetoelectroelastic sandwich nanoplate using refined zigzag theory

A. GHORBANPOUR-ARANI1,2, F. KOLAHDOUZAN1, M. ABDOLLAHIAN1   

  1. 1. Faculty of Mechanical Engineering, University of Kashan, Kashan 87317-53153, Iran;
    2. Institute of Nanoscience & Nanotechnology, University of Kashan, Kashan 87317-53153, Iran
  • Received:2017-06-03 Revised:2017-08-22 Online:2018-04-01 Published:2018-04-01
  • Contact: A. GHORBANPOUR-ARANI E-mail:aghorban@kashanu.ac.ir
  • Supported by:

    Project supported by the University of Kashan (No. 574600/33)

Abstract:

This paper is concerned with a buckling analysis of an embedded nanoplate integrated with magnetoelectroelastic (MEE) layers based on a nonlocal magnetoelectroelasticity theory. A surrounding elastic medium is simulated by the Pasternak foundation that considers both shear and normal loads. The sandwich nanoplate (SNP) consists of a core that is made of metal and two MEE layers on the upper and lower surfaces of the core made of BaTiO3/CoFe2O4. The refined zigzag theory (RZT) is used to model the SNP subject to both external electric and magnetic potentials. Using an energy method and Hamilton's principle, the governing motion equations are obtained, and then solved analytically. A detailed parametric study is conducted, concentrating on the combined effects of the small scale parameter, external electric and magnetic loads, thicknesses of MEE layers, mode numbers, and surrounding elastic medium. It is concluded that increasing the small scale parameter decreases the critical buckling loads.

Key words: controllable mechanical system, relativity, variable mass, nonholonomic constraint, variation principle equation or motion, sandwich nanoplate (SNP), nonlocal magnetoelectroelasticity theory, buckling, magnetostrictive layer, refined zigzag theory (RZT)

2010 MSC Number: 

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