A Semianalytical Solution for In-Plane Vibration Analysis of Annular Panels with Arbitrary Distribution of Internal Point Constraints

Table 8

In-plane modal frequencies of annular panel with a sector area constraint.

Modal frequencies	FEA	Present 36 points	Difference (%)
f1	268.32	264.85	1.29
f2	739.21	737.34	0.25
f3	1329.6	1324.9	0.36
f4	1952.8	1942.4	0.53
f5	2313.0	2290.2	0.99
f6	2662.1	2660.3	0.07
f7	2992.7	2981.8	0.36
f8	3222.3	3217.2	0.16