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

Table 16

First four frequencies for a clamped elastically supported shell ().

Boundary conditions	Ref. [11]				Present
	1	2	3	4	1	2	3	4
0	131.99	249.82	262.81	377.00	131.57	249.36	262.91	376.55
0.01	183.01	278.17	279.76	404.12	183.11	278.17	280.00	404.23
0.1	298.01	310.07	364.98	490.35	299.10	310.28	366.51	490.41
	315.07	339.86	473.26	491.64	315.65	341.04	478.35	491.70
10^6	315.15	343.43	491.36	501.06	316.26	346.25	491.84	508.34
10^8	315.15	343.43	491.36	501.08	316.25	346.23	491.84	508.25