Nonlinear response of imperfect eccentrically stiffened ceramic-metal-ceramic FGM thin circular cylindrical shells surrounded on elastic foundations and subjected to axial compression

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• 作者：Nguyen Dinh Duc ; Pham Toan Thang
• 关键词：Nonlinear response ; S-FGM eccentrically stiffened circular cylindrical shells ; Imperfection ; Stress function ; Elastic foundation
• 刊名：Composite Structures
• 出版年：April, 2014
• 年：2014
• 卷：110
• 期：Complete
• 页码：200-206
• 全文大小：1491 K

文摘

In this paper, an analytical approach is presented to investigate the nonlinear static buckling and post-buckling for imperfect eccentrically stiffened functionally graded thin circular cylindrical shells surrounded on elastic foundation with ceramic-metal-ceramic layers (S-FGM) and subjected to axial compression. The Lekhnitsky smeared stiffeners technique with Pasternak type elastic foundation, stress function and Bubnov-Galerkin method are applied. Numerical results are given for evaluating effects of material and geometrical properties, elastic foundations and eccentrically outside stiffeners on the buckling and post-buckling of the S-FGM shells. The obtained results are validated by comparing with those in the literature.