Buckling of heated temperature dependent FGM cylindrical shell surrounded by elastic medium

• Autorzy: Sabzikar Boroujerdy M , Naj R , Kiani Y
• Języki publikacji: EN

Abstrakty

EN

Based on the Donnell theory of shells combined with the von-Karman type of geometrical nonlinearity, three coupled equilibrium equations for a through-the-thickness functionally graded cylindrical shell embedded in a two parameter Pasternak elastic foundation are ob- tained. Equivalent properties of the shell are obtained based on the Voigt rule of mixture in terms of a power law volume fraction for the constituents. Properties of the constituents are considered to be temperature dependent. The temperature profile through the shell thick- ness is obtained by means of the central finite difference method. Linear prebuckling analysis is performed to obtain the prebuckling forces of the cylindrical shell. Stability equations are derived based on the well-known adjacent equilibrium criterion. Three coupled partial dif- ferential stability equations are solved with the aid of a hybrid Fourier-GDQ method. After validating the numerical results, some parametric studies are conducted to investigate the influence of various parameters, especially foundation interaction. It is shown that elastic foundation enhances the critical buckling temperature difference of the shell and violates the buckled pattern.

Słowa kluczowe

EN

cylindrical shell; thermal buckling; Pasternak foundation; functionally graded materials

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2014
• Tom: Vol. 52 nr 4
• Strony: 869--881
• Opis fizyczny: Bibliogr. 22 poz., rys., tab.

Twórcy

autor

Sabzikar Boroujerdy M

• Department of Engineering, Firoozkooh Branch, Islamic Azad University, Firoozkooh, Iran

autor

Naj R

• Research Institute of Petroleum Industry (RIPI), West Blvd. Azadi Sport Complex, Tehran, Iran

autor

Kiani Y

• Mechanical Engineering Department, Amirkabir University of Technology, Hafez Avenue, Tehran, Iran

Bibliografia

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