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Efficient Nonlinear Analysis of Column-Supported Cylinderical Shells

by P. L. Gould, Washington Univ, St. Louis, United States,
R. V. Ravichandran, Washington Univ, St. Louis, United States,
S. Sridharan, Washington Univ, St. Louis, United States,



Document Type: Proceeding Paper

Part of: Spatial, Lattice and Tension Structures

Abstract:

This paper presents a finite element methodology for the study of geometrically nonlinear behavior of column-supported cylinder. Due to the discrete nature of the column supports, the shell is locally deviant from its axisymmetric geometry. As an alternative to the conventional two-dimensional finite element discretization of the shell domain, a local-global analysis technique is used which takes advantage of the axisymmetric characteristics of the shell, thus striving to achieve computational simplicity in terms of modeling and analysis efforts. An example of a column-supported cylinder is considered to demonstrate the use of local-global method. The use of this method for the study of the effect of localized imperfection on the load carrying capacity is also demonstrated.

Subject Headings: Finite element method | Load bearing capacity | Structural analysis | Nonlinear analysis | Cylinders | Two-dimensional analysis | Stress analysis

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