Free Vibration Analysis of Fiber Metal Laminate Annular Plate by State-Space Based Differential Quadrature Method

Table 3

A convergence study for the nondimensional natural frequencies associated with the first and second vibration modes of a clamped-clamped annular plate (𝑎=40 cm and 𝑏=5 cm).

m	h (mm)	𝑁=7	𝑁=8	𝑁=9	𝑁=10	𝑁=11
0	2	0.0001919	0.0001907	0.0001910	0.0001909	0.0001910
	3	0.00042822	0.00042540	0.0004262	0.0004260	0.0004262
	5	0.00115613	0.00114870	0.00115090	0.0011502	0.0011508
1	2	0.0002075	0.0002046	0.0002052	0.0002050	0.0002051
	3	0.00046116	0.00045416	0.0004553	0.0004549	0.0004552
	5	0.00123097	0.00121644	0.0012193	0.00121824	0.0012190