Determine magnitude of the coefficients

Question

Response to the following problem:

Compute the [A], [B], [D], and [H] matrices for the following laminates. In all cases, the total laminate thickness is 4.0 mm. Comment on the coupling of the constitutive equations for each case. Comment on the relative magnitude of the coefficients as the number of laminae increases.

[±45/0/90/±30]; carbon-epoxy(AS4-3501-6)

[±45]₂ = [±45/±45]; carbon-epoxy

[±45]₄; carbon-epoxy

[±45]₈; carbon-epoxy

[0/90]₂; carbon-epoxy

[0/90]₄; carbon-epoxy

[0/90]₈; carbon-epoxy