Vibration Characteristics Analysis of Cylindrical Shell-Plate Coupled Structure Using an Improved Fourier Series Method

Table 1

The frequency for the coupled structure with symmetrical boundary condition /Hz.

Mode	F-F			S-S			C-C
	Current	Ansys	Errors	Current	Ansys	Errors	Current	Ansys	Errors
	25.01	25.03	0.07	88.21	87.64	0.65	85.99	85.42	0.67
	25.01	25.03	0.06	179.04	177.85	0.67	179.05	177.85	0.67
	68.07	68.13	0.09	179.04	177.85	0.67	179.05	177.85	0.67
	68.07	68.13	0.09	293.83	291.74	0.72	293.84	291.74	0.72
	88.21	87.64	0.65	293.83	291.88	0.67	293.84	291.88	0.67
	128.55	128.69	0.11	295.67	295.76	0.03	335.01	332.70	0.69
	128.55	128.69	0.11	295.67	295.76	0.03	356.56	356.70	0.04
	170.33	170.33	0.00	329.87	329.98	0.03	356.56	356.70	0.04
	170.33	170.33	0.00	329.87	329.98	0.03	376.51	376.64	0.03
	179.37	178.18	0.67	337.94	335.63	0.69	376.51	376.64	0.03
	179.37	178.18	0.67	344.03	344.17	0.04	417.62	417.27	0.08
	195.77	195.26	0.26	344.03	344.17	0.04	417.62	417.27	0.08
	195.77	195.26	0.26	354.59	354.00	0.17	423.03	421.88	0.27
	206.36	206.65	0.14	354.59	354.00	0.17	423.03	421.88	0.27
	206.36	206.65	0.14	375.55	375.48	0.02	424.65	424.86	0.05
	219.70	219.98	0.13	375.55	375.48	0.02	424.65	424.86	0.05
	219.70	219.98	0.13	417.24	415.28	0.47	430.00	426.90	0.73
	293.84	291.75	0.72	417.24	415.28	0.47	430.00	426.90	0.73
	293.84	291.88	0.67	429.95	426.86	0.72	455.71	455.92	0.05
	301.50	302.00	0.17	429.95	426.86	0.72	455.71	455.92	0.05