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Advances in Aircraft and Spacecraft Science
  Volume 7, Number 4, July 2020, pages 335-351
open access

Thermal buckling analysis of functionally graded sandwich cylindrical shells
Ahmed Amine Daikh

    Thermal buckling of functionally graded sandwich cylindrical shells is presented in this study. Material properties and thermal expansion coefficient of FGM layers are assumed to vary continuously through the thickness according to a sigmoid function and simple power-law distribution in terms of the volume fractions of the constituents. Equilibrium and stability equations of FGM sandwich cylindrical shells with simply supported boundary conditions are derived according to the Donnell theory. The influences of cylindrical shell geometry and the gradient index on the critical buckling temperature of several kinds of FGM sandwich cylindrical shells are investigated. The thermal loads are assumed to be uniform, linear and nonlinear distribution across the thickness direction. An exact simple form of nonlinear temperature rise through its thickness taking into account the thermal conductivity and the inhomogeneity parameter is presented.
Key Words
    FGM sandwich cylindrical shells; thermal buckling; nonlinear temperature rise; Donnell theory
Ahmed Amine Daikh: 1.) Structural Engineering and Mechanics of Materials Laboratory, Department of Civil Engineering, Mascara, Algeria
2.) Mechanics of Structures and Solids Laboratory, Faculty of Technology, University of Sidi Bel Abbes, Algeria

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