A Unified Spectro-Geometric-Ritz Method for Vibration Analysis of Open and Closed Shells with Arbitrary Boundary Conditions

Table 5

First six frequency parameters for an open cylindrical shell subjected to various classical-elastic combined boundary conditions.

Modes	E^1-F-E^1-F			E^2-S-E^2-S			E^3-C-E^3-C
	Ref. [37]	Present	Error (%)	Ref. [37]	Present	Error (%)	Ref. [37]	Present	Error (%)
1	38.0712	38.1628	0.24050	128.550	128.4335	0.09062	156.917	156.882	0.02209
2	51.5365	51.6942	0.30606	181.842	181.8735	0.01733	214.063	214.044	0.00899
3	87.8899	87.7157	0.19816	206.415	206.1768	0.11538	222.556	222.437	0.05370
4	92.1902	92.3438	0.16660	228.360	228.2684	0.04011	248.105	247.994	0.04464
5	99.7832	99.9866	0.20384	279.383	279.053	0.11811	291.150	290.934	0.07431
6	143.176	143.098	0.05421	289.155	288.959	0.06778	294.611	294.394	0.07367