The Modeling Method for Vibration Characteristics Analysis of Composite-Laminated Rotationally Stiffened Plate

Figure 3

Variation curve of natural frequency parameter Ω of the composite-laminated rotationally stiffened plate under different cutoff values. (a) Stiffened annular sector plate. (b) Stiffened circular sector plate. (c) Stiffened annular plate. (d) Stiffened circular plate.

(a)

(b)

(c)

(d)