Journal
INTERNATIONAL JOURNAL OF MECHANICAL SCIENCES
Volume 51, Issue 7, Pages 500-507Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijmecsci.2009.05.002
Keywords
FGMs; Cylindrical shells; Nonlinear buckling; Postbuckling; Thermal gradient; Energy method
Categories
Funding
- National Natural Science Foundation of China [10672059]
- Natural Science Foundation of Guangdong Province [8151064101000002]
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Based on the nonlinear large deflection theory of cylindrical shells as well as the Donnell assumptions, this paper presents nonlinear buckling and postbuckling analyses for axially compressed functionally graded cylindrical shells by using the Ritz energy method and the nonlinear strain-displacement relations of large deformation. The material properties of the shells vary smoothly through the shell thickness according to a power law distribution of the volume fraction of constituent materials. Meanwhile, by taking into account the temperature-dependent material properties, various effects of external thermal environment are also investigated. Numerical results show various effects of the inhomogeneous parameter, dimensional parameters and external thermal environments on nonlinear buckling and postbuckling behaviors. There is a mode-jumping observed after buckling. The present theoretical results are verified by those in the literature. (C) 2009 Elsevier Ltd. All rights reserved.
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