A Semianalytic Method for Vibration Analysis of a Sandwich FGP Doubly Curved Shell with Arbitrary Boundary Conditions

Table 1

Convergence analysis of number of segments for Sandwich FGP doubly curved structure.

N	Paraboloidal shell				Hyperbolic shell				Elliptical shell
	1	2	3	4	1	2	3	4	1	2	3	4
2	9.46	9.80	15.94	23.30	42.91	47.49	56.58	74.94	45.57	60.60	128.43	167.75
3	9.45	9.80	15.91	23.30	42.83	47.47	56.41	74.93	45.56	60.59	128.40	167.75
4	9.45	9.80	15.90	23.30	42.79	47.47	56.30	74.93	45.56	60.59	128.40	167.75
5	9.45	9.80	15.90	23.30	42.78	47.47	56.25	74.94	45.56	60.59	128.40	167.75
6	9.45	9.80	15.90	23.30	42.77	47.47	56.23	74.94	45.56	60.59	128.40	167.75
8	9.45	9.80	15.90	23.30	42.77	47.47	56.21	74.94	45.56	60.59	128.40	167.75
10	9.45	9.80	15.90	23.30	42.77	47.47	56.21	74.94	45.56	60.59	128.40	167.75