Nonlinear Response of Imperfect Eccentrically Stiffened Ceramic-Metal-Ceramic Sigmoid Functionally Graded Material (S-FGM) Thin Circular Cylindrical Shells Surrounded on Elastic Foundations Under Uniform Radial Load

作者：Nguyen Dinh Duc^*; Pham Toan Thang

来源：Mechanics of Advanced Materials and Structures, 2015, 22(12): 1031-U103.

DOI：10.1080/15376494.2014.910320

• nonlinear buckling
• thin S-FGM eccentrically stiffened cylindrical shells
• imperfection
• elastic foundations
• uniform radial load

This article researches nonlinear response of imperfect eccentrically stiffened symmetric FGM thin circular cylindrical shells with ceramic-metal-ceramic layers, which are symmetric through the middle surface by Sigmoid-law distribution (S-FGM) and have stiffeners surrounded on elastic foundations under uniform radial load. The Donnell classical shell theory, stress function, and Galerkin method are used for investigation of the nonlinear stability of the S-FGM shell. The obtained results show the effects of the stiffeners, elastic foundations, mechanical load, and material parameters on the nonlinear buckling response of symmetric S-FGM circular cylindrical shells.

• 出版日期2015