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SUMMARY A laminated cylindrical shell of finite length under combined buckling loads is optimized for maximum load carrying capacity. The loading comprises the axial load and external pressure. The design variable is taken as the fibre orientation of individual layers. The general theory of laminated plates is employed to determine the buckling loads. The formulation includes the contribution of the shear deformation and the variation of the radius over the thickness of the shell. Numerical results are given for both thin and thick shells. The effects of model approximation are investigated. The results are given for various values of the external pressure and different shell aspect ratios. It is shown that it is essential to take the shear deformation into account in the case of thick shells to obtain the correct optimum design.
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Adali et al. (1996) studied this question.
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