Postbuckling of internal pressure loaded FGM cylindrical shells surrounded by an elastic medium

Shen, Hui-Shen, Yang, Jie and Kitipornchai, Sritawat (2010) Postbuckling of internal pressure loaded FGM cylindrical shells surrounded by an elastic medium. European Journal of Mechanics A - Solids, 29 3: 448-460. doi:10.1016/j.euromechsol.2009.11.002


Author Shen, Hui-Shen
Yang, Jie
Kitipornchai, Sritawat
Title Postbuckling of internal pressure loaded FGM cylindrical shells surrounded by an elastic medium
Journal name European Journal of Mechanics A - Solids   Check publisher's open access policy
ISSN 0997-7538
1873-7285
Publication date 2010
Year available 2010
Sub-type Article (original research)
DOI 10.1016/j.euromechsol.2009.11.002
Open Access Status
Volume 29
Issue 3
Start page 448
End page 460
Total pages 13
Place of publication Issy les Moulineaux, Cedex, France
Publisher Elsevier Masson
Collection year 2010
Language eng
Subject 3100 Physics and Astronomy
2211 Mechanics of Materials
2210 Mechanical Engineering
2500 Materials Science
2610 Mathematical Physics
Abstract This paper presents a study on the postbuckling response of a functionally graded cylindrical shell of finite length embedded in a large outer elastic medium and subjected to internal pressure in thermal environments. The surrounding elastic medium is modeled as a tensionless Pasternak foundation that reacts in compression only. The postbuckling analysis is based on a higher order shear deformation shell theory with von Kármán-Donnell-type of kinematic nonlinearity. The thermal effects due to heat conduction are also included and the material properties of functionally graded materials (FGMs) are assumed to be temperature-dependent. The nonlinear prebuckling deformations and the initial geometric imperfections of the shell are both taken into account. A singular perturbation technique is employed to determine the postbuckling response of the shells and an iterative scheme is developed to obtain numerical results without using any assumption on the shape of the contact region between the shell and the elastic medium. Numerical solutions are presented in tabular and graphical forms to study the postbuckling behavior of FGM shells surrounded by an elastic medium of tensionless elastic foundation of the Pasternak-type, from which results for conventional elastic foundations are obtained as comparators. The results reveal that the unilateral constraint has a significant effect on the postbuckling response of shells subjected to internal pressure in thermal environments when the foundation stiffness is sufficiently large.
Keyword Contact buckling
Functionally graded cylindrical shell
Postbuckling
Tensionless elastic foundation model
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
 
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Created: Wed, 29 Oct 2014, 11:50:39 EST by Jeannette Watson on behalf of School of Civil Engineering