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Structural Engineering and Mechanics
  Volume 71, Number 4, August25 2019, pages 351-361

Buckling analysis of graphene oxide powder-reinforced nanocomposite beams subjected to non-uniform magnetic field
Farzad Ebrahimi, Mostafa Nouraei, Ali Dabbagh and Ömer Civalek

    Present article deals with the static stability analysis of compositionally graded nanocomposite beams reinforced with graphene oxide powder (GOP) is undertaken once the beam is subjected to an induced force caused by nonuniform magnetic field. The homogenized material properties of the constituent material are approximated through Halpin-Tsai micromechanical scheme. Three distribution types of GOPs are considered, namely uniform, X and O. Also, a higher-order refined beam model is incorporated with the dynamic form of the virtual work\'s principle to derive the partial differential motion equations of the problem. The governing equations are solved via Galerkin\'s method. The introduced mathematical model is numerically validated presenting a comparison between the results of present work with responses obtained from previous articles. New results for the buckling load of GOP reinforced nanocomposites are presented regarding for different values of magnetic field intensity. Besides, other investigations are performed to show the impacts of other variants, such as slenderness ratio, boundary condition, distribution type and so on, on the critical stability limit of beams made from nanocomposites.
Key Words
    buckling; graphene oxide powder; refined higher-order beam theory; non-uniform magnetic field
Farzad Ebrahimi, Mostafa Nouraei: Department of Mechanical Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin
Ali Dabbagh: School of Mechanical Engineering, College of Engineering, University of Tehran, Tehran, Iran
Ömer Civalek: Akdeniz University, Engineering Faculty, Civil Engineering Dept., Division of Mechanics, 07058 Antalya, Turkey

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