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SPECIALLY ORTHOTROPIC plate behavior in CLT terms means:
A{'text': 'A_16 = A_26 = 0 (no extension-shear coupling)', 'label': 'A'}
B{'text': 'Material has no properties', 'label': 'C'}
C{'text': 'Plate is square', 'label': 'D'}
D{'text': 'For BENDING: D_16 = D_26 = 0 — bending and twisting decouple, simplifying the plate equation', 'label': 'B'}
Answer & Solution
Correct answer: D. {'text': 'For BENDING: D_16 = D_26 = 0 — bending and twisting decouple, simplifying the plate equation', 'label': 'B'}
"Specially orthotropic" in bending: D_16 = D_26 = 0. Achieved when the laminate has many plies symmetric about both x and y axes (e.g., [0/90/0/90/...]_s). Allows separation-of-variables solutions to the plate equation.
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