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

Table 7

Frequency parameters, Ω=𝜔𝑏(𝜌(1−𝑣²)/𝐸)^1/2, for C-SS2 annular plates with various cutout ratios.

𝑎/𝑏	Circumferential wave number 𝑛
	0	1	2	3	4
0.2	4.2357	1.3344	2.4986	3.4605	4.2533
	(4.2369)^a	(1.3344)	(2.4993)	(3.4629)	(4.2578)
0.4	5.3911	1.4648	2.5258	3.5715	4.4481
0.6	6.8087	2.0057	2.7866	3.7234	4.6936
0.8	13.760	4.1684	4.5373	5.0913	5.7751

aResults in parentheses are calculated using ABAQUS.