Farzad Ebrahimi - Department of Mechanical Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin, Iran
Mostafa Nouraei - Department of Mechanical Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin, Iran
Ali Seyfi - Department of Mechanical Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin, Iran
Ali Dabbagh - School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran

This paper is devoted to analyze the thermo -mechanical behavior of the functionally graded (FG) nanocomposite beams reinforced with graphene oxide powder (GOP). The beam is subjected to the non-uniform magnetic field with the aim of investigating the magnetic field intensity on the buckling behavior of GOPR nanocomposite beams. A higher order shear deformation beam theory is utilized in order to cover the shear influences and also the governing equations have been derived with an incorporation of this theory with Hamilton s principle and solved analytically via Galerkin s method. The effective material properties of the nanocomposite are estimated through Halpin-Tsai micromechanical scheme. The beam is reinforced with GOP by considering various type of GOP distribution namely U, X and O. Then the influences of a large variety of parameters including uniform temperature change, weight fraction of GOP, boundary condition, distribution type on the critical buckling loads of nanocomposite beams has been illustrated separately and the results are exactly interpreted to obtain high lights of each figure. Moreover the accuracy of the results are validated with those of previously published works. It is explicitly shown that the thermal buckling behavior of a FG nanocomposite beams is significantly influenced by these effects.

Thermal buckling, graphene oxide powder, refined higher-order beam theory, nonuniform magnetic field