In-Plane Vibration Analysis of Annular Plates with Arbitrary Boundary Conditions

Table 8

Frequency parameters, Ω=𝜔𝑏(𝜌(1−𝑣²)/𝐸)^1/2, for SS1-SS1 annular plates with different cutout ratios.

𝑎/𝑏	Circumferential wave number 𝑛
	0	1	2	3	4
0.2	2.5059	1.3570	1.5314	2.1413	2.8090
	(2.5066)^a	(1.3560)	(1.5306)	(2.1413)	(2.8097)
0.4	3.1895	1.4782	1.7312	2.2297	2.8384
0.6	4.6915	1.3825	1.7869	2.3140	2.8999
0.8	9.3104	1.2448	1.6725	2.2081	2.7904

aResults in parentheses are calculated using ABAQUS.