| Summary: | 碩士 === 國立中興大學 === 土木工程學系所 === 98 === The main purpose of this paper is to explore the buckling deformation patterns and the buckling stress of the thin cylindrical shell subject to axial force. Using three-dimensional elastic stability variational principle derived three-dimensional finite element model of elastic stability analysis. The analysis results of buckling deformation and stress is considered four different boundary conditions, differ length L, radius R and the thickness t of cylindrical shell. The regression formula of buckling stress is established by considering multiple parameter of analysis results.The finite element analysis results in present paper compare with the classical theory value and can be found previous studies with differences and discrete between experimental data and classical theory value, Classical theory could be errors or using constraints. In the previous experiment, the boundary constraints of thin cylindrical shells more difficult, therefore to create large discreteness of comparsion results between practical and theoretical.
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