Three dimensional effective elastic constants for thick laminates. Analytical approaches involve the selection of boundary conditions for the rve and appropriate boundary conditions need to be carefully considered when estimating the. 1 v32 v23 c11 r e1 v21 v23 v31 clz c21 r e1 v31 v21 v32 c13 c31 r e1 1 v13v31 czz r e2 v32 v31 v12 c32 cz3 r ez 1 v12v21 c33 r e3 c44 g23 c55 g13 c66 g12 r i v12 v21 v13 v31 v23 v32 2v21 v13 v32 if the unidirectional layer is considered to be transversely.

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