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

Table 6

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

𝑎/𝑏	Circumferential wave number 𝑛
	0	1	2	3	4
0.2	2.5059	1.5923	1.6172	2.1571	2.8112
	(2.5066)^a	(1.5923)	(1.6172)	(2.1575)	(2.8121)
0.4	3.1895	2.3526	2.2122	2.4531	2.9322
0.6	4.6915	3.7429	3.5579	3.5515	3.7324
0.8	9.3104	7.7222	7.6007	7.4883	7.4254

aResults in parentheses are calculated using ABAQUS.