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Buckling of 2D-FG Cylindrical Shells under Combined External Pressure and Axial Compression

Published online by Cambridge University Press:  03 June 2015

R. Mohammadzadeh ,
M. M. Najafizadeh  and
M. Nejati
R. Mohammadzadeh*
Affiliation:
Department of Mechanical Engineering, Islamic Azad University, Arak Branch, Arak, Iran
M. M. Najafizadeh
Affiliation:
Department of Mechanical Engineering, Islamic Azad University, Arak Branch, Arak, Iran
M. Nejati
Affiliation:
Young Researchers Club, Islamic Azad University, Arak Branch, Arak, Iran
*
*Corresponding author. Email: rmohammadzadeh@ymail.com
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Abstract

This paper presents the stability of two-dimensional functionally graded (2D-FG) cylindrical shells subjected to combined external pressure and axial compression loads, based on classical shell theory. The material properties of functionally graded cylindrical shell are graded in two directional (radial and axial) and determined by the rule of mixture. The Euler’s equation is employed to derive the stability equations, which are solved by GDQ method to obtain the critical mechanical buckling loads of the 2D-FG cylindrical shells. The effects of shell geometry, the mechanical properties distribution in radial and axial direction on the critical buckling load are studied and compared with a cylindrical shell made of 1D-FGM. The numerical results reveal that the 2D-FGM has a significant effect on the critical buckling load.

Keywords

74K2574G60Mechanical buckling2D-FG cylindrical shellcombined loadclassical shell theoryGDQ method
Type
Research Article
Information
Advances in Applied Mathematics and Mechanics , Volume 5 , Issue 3 , June 2013 , pp. 391 - 406
Copyright
Copyright © Global-Science Press 2013

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