Minimum Weight Design of Laminated Composite Plates Subject to Strength Constraint

摘要

The minimum weight design of laminated composite plates subject to strength and side constraints is studied via a constrained global optimization technique. The first-ply failure load that is treated as the strength of a laminated plate is determined by using a shear deformable finite element and one of the several commonly used phenomeno- logical failure criteria. The optimal layer group parameters (fiber angles and thicknesses of layer groups) of the laminated composite plate are determined via the proposed constrained global optimization technique for at- taining the global minimum weight of the plate and satisfying the imposed constraints.