Optimum Design of Laminated Plates Under Shear

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Abstract
This paper is concerned with the optimum design of plates with ortho tropic layers under shear. The plates considered are the laminates of N orthotropic layers whose principal material axes coincide with the plate axes. Each layer is assumed to have the same thickness and an equal number of fibers in the direction of +α i and —α i with respect to the plate axis. The fiber directions which give the highest shear buckling stress are found by utilizing a mathematical optimization technique.