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STRESS FIELD NEAR THE EDGES OF SYMMETRIC BALANCED COMPOSITE LAMINATES

The interlaminar stresses in symmetric balanced composite laminates under uniform extensional strain are studied here by using the layerwise theory of Reddy. The laminates are assumed long in the X direction. Equilibrium equations are derived by using the principle of minimum total potential energy and solved analytically. The results obtained from this theory are compared with those available in the literature. It is found that the theory can accurately predict the stresses in the interior region and near the free edges of composite laminates.