Abstract
A layup optimization method of symmetrically laminated plates is proposed for minimizing the maximum deflection. The bending-twisting coupling is taken into consideration in the flexural analysis of symmetrically laminated plates subject to a uniformly distributed transverse load. With the use of lamination parameters, the effect of bending-twisting coupling on the maximum deflection is discussed for the case of simply supported or clamped plates. Optimal laminate configurations to minimize the maximum transverse deflection are also obtained by using a mathematical programming method in which four lamination parameters are used as design variables. It is shown that the optimal laminate configuration consists of either an angle-ply laminate or a cross-ply laminate.
