Curvature Effects on the Vibration Characteristics of Doubly Curved Shallow Shells with General Elastic Edge Restraints

Table 1

Frequency parameters for a completely clamped doubly curved shallow shell.

Mode; number	Mode frequencies
								FEM^*	FEM^#	[14]
	6	7	8	9	10	11	12
1	102.17	102.15	102.14	102.13	102.13	102.13	102.13	102.11	102.12	102.22
2	103.02	103.01	103.00	103.00	103.00	103.00	103.00	103.00	103.01	103.08
3	118.73	118.65	118.64	118.62	118.61	118.60	118.60	118.56	118.59	118.76
4	144.73	144.72	144.71	144.71	144.71	144.71	144.71	144.63	144.66	144.82
5	145.47	145.45	145.38	145.37	145.36	145.35	145.35	145.26	145.30	145.64
6	158.54	158.53	158.52	158.51	158.51	158.51	158.51	158.43	158.46	158.67
Time (s)	4.41	6.11	8.71	12.11	16.35	22.31	28.35	23.20	134.60

100 × 100 elements, ^#200 × 200 elements.