Dynamic Stability of Thick, Orthotropic, Circular Cylindrical Shells

The effect of transverse shear deformation on dynamic stability of simply supported, finite-length, circular cylindrical shells is investigated. The loading is cyclic axial compression and tension. The shell is orthotropic, which can be due to closely-spaced orthogonal stiffeners or due to many layers of composite material alternately oriented at angles of 0° and 90° or at + θ and −θ with respect to the shell axis. The theory used is a general shear deformable shell theory, which can be considered to be the thick-shell version of the Sanders-Koiter shell theory. Parametric studies are made to show the effects of shell geometry and different shell theories on stability boundaries.

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