抄録
Composite materials are often combined with other materials such as foamed plastics and wood to make a sandwich-type component. In this case a designer is faced with a‘materials design problem’, that is the selection of the best combination of materials for a particular application and the determination of the thickness ratio of each layer and the fiber orientation angle.
In this paper, an optimal design method of fibrous composite sandwich plates with required flexural stiffness is proposed. The sandwich plates were supposed to be limited in thickness and consist of a skin of angle ply laminate and a core of isotropic material. The effective Young's moduli E1f, E2f and E6f of the plate were considered as the flexural stiffness. The optimal value of the core thickness ratio, which gives the minimum cost or the minimum weight, and the fiber orientation angle for the skin were obtained under the condition of given flexural stiffness.
