FLEXURAL CHARACTERISTICS AND LAYUP OPTIMIZATION OF LAMINATED COMPOSITE PLATES UNDER HYGROTHERMAL CONDITIONS USING LAMINATION PARAMETERS

摘要

The flexural characteristics and layup optimization of laminated composite plates are examined in environmental conditions of temperature and moisture. The deflection of laminated composite plates is analyzed in the design space of 12 lamination parameters. The layup optimization for minimizing the deflection of laminated composite plates is carried out using all 12 lamination parameters as design variables. Mathematical programming methods are used for optimization. In hygrothermal conditions, the maximum deflection of laminated composite plates with in-plane hygrothermal stresses can he reduced by optimized nonsymmetric laminate configurations.