抄録
Curved shells have been widely used in the field of building construction and vehicle body. In the other hand, composite materials (fiber reinforced plastics:FRP) are used for lightweight design. Since FRP materials have different elastic properties depend on the fiber-directions, the vibration characteristics show complex phenomena. In this report, the first, the natural frequencies and natural modes of the slightly curved FRP curbed shells formed with angle play are estimated based on the shallow shell theory and the Ritz method. The next, the influence of fiber-direction and eccentricity of curved plate on the natural frequencies and natural modes are discussed.
