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

Table 9

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

Modes	E^1-F-E^1-F			E^2-F-E^2-F			E^3-F-E^3-F
	Ref. [37]	Present	Error (%)	Ref. [37]	Present	Error (%)	Ref. [37]	Present	Error (%)
1	56.9432	56.8022	0.24763	68.0095	67.9740	0.05226	68.3529	68.3048	0.07040
2	57.1139	56.9227	0.33470	69.3596	69.3364	0.03347	69.9152	69.8886	0.03800
3	118.408	118.226	0.15366	130.858	130.957	0.07561	131.411	131.269	0.10843
4	125.462	124.511	0.75773	131.270	131.359	0.06747	131.693	131.559	0.10175
5	137.038	136.743	0.21519	158.506	158.160	0.21803	164.337	164.089	0.15109
6	153.413	152.120	0.84285	178.341	177.884	0.25638	181.088	180.727	0.19913