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Compute the transformed reduced stiffness for the material of given Exercise at θ = 45? and θ = 90? . Comment on the results.

Exercise

Compute the reduced stiffness [Q] and compliance [S] matrices, and the intralaminar shear stiffness [Q∗ ] and compliance [S ∗ ] matrices for a lamina with E₁ = 35 GP a, E₂ = 3.5 GP a, ν₁₂ = 0.3, G₁₂ = 1.75 GP a, G₂₃ = 0.35 GP a.

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