Abstract

The problem of instability of imperfect, laminated, circular cylindrical shells under the action of uniform axial compression is investigated. The analysis is based on nonlinear kinematic relations where the effect of transverse shear deformation is taken into account. The buckling is assumed to be elastic and the geometry to have initial geometric imperfections. The kinematic relations, governing equations and the related boundary conditions for the nonlinear analysis are derived and presented. A solution methodology has been developed and employed in generating results. The imperfection sensitivity is investigated. The results obtained indicate that geometric imperfections have little effect on the limit point load for moderately thick cylindrical shells.

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