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Thermal buckling of temperature-dependent FGM conical shells with arbitrary edge supports

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Abstract

Bifurcation behavior of heated conical shell made of a through-the-thickness functionally graded material is investigated in the present research. Properties of the shell are obtained based on a power law form across the thickness. Temperature dependency of the constituents is also taken into account. The heat conduction equation of the shell is solved based on an iterative generalized differential quadrature method (GDQM). General nonlinear equilibrium equations and the associated boundary conditions are obtained using the virtual displacement principle in the Donnell sense. The prebuckling solution of the shell is obtained under the assumption of linear membrane deformations. The stability equations are extracted via the concept of the adjacent equilibrium criterion. A semi-analytical solution employing the GDQM and trigonometric expansion is implemented to solve the stability equations. Numerical results of the present research are compared and validated with the known available data through the open literature. Some parametric studies are conducted to investigate the influences of various involved parameters, such as the cone semi-vertex angle, boundary conditions, power law index of composition rule, length to thickness ratio, and the radius to thickness ratio.

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Authors and Affiliations

  1. Mechanical Engineering Department, Amirkabir University of Technology, Tehran, Iran

    M. Akbari, Y. Kiani & M. R. Eslami

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  1. M. Akbari
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  2. Y. Kiani
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  3. M. R. Eslami
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Correspondence to M. R. Eslami.

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Akbari, M., Kiani, Y. & Eslami, M.R. Thermal buckling of temperature-dependent FGM conical shells with arbitrary edge supports. Acta Mech 226, 897–915 (2015). https://doi.org/10.1007/s00707-014-1168-3

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  • DOI: https://doi.org/10.1007/s00707-014-1168-3

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