Abstract
Laminated composite materials which have symmetrical stackings and of which plies are not orthotropic materials shows coupled deformation between bending and twisting. Such a coupling is considered unfavorable in the designing of structural members so far. Novel performances not available with conventional materials, however, can be produced when the coupling is introduced appropriately.
In this paper, designing method of laminated fibrous composite materials with required bending-twisting coupling is proposed. The method is based on the graphical representation of the feasible design region on the flexural and coupling lamination parameter diagrams introduced newly in this paper. The stacking construction of the laminate whose flexural and torsional properties are satisfied with given conditions can be obtained by the proposed design procedure.
