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

Table 2

The frequency for coupled structure with asymmetrical boundary condition /Hz.

Mode	F-F			S-S			C-C
	Current	Ansys	Errors	Current	Ansys	Errors	Current	Ansys	Errors
	88.21	87.64	88.21	85.98	85.41	0.67	85.98	85.41	0.67
	139.26	139.07	139.26	142.58	142.32	0.18	179.04	177.85	0.67
	139.26	139.07	139.26	142.58	142.32	0.18	179.04	177.85	0.67
	147.90	147.99	147.90	149.75	149.82	0.05	293.84	291.74	0.72
	147.90	147.99	147.90	149.75	149.82	0.05	293.84	291.88	0.67
	179.12	177.93	179.12	178.98	177.79	0.67	312.95	312.98	0.01
	179.12	177.93	179.12	178.98	177.79	0.67	312.95	312.98	0.01
	212.16	212.44	212.16	212.81	213.10	0.13	334.81	332.51	0.69
	212.16	212.44	212.16	212.81	213.10	0.13	352.81	352.93	0.03
	229.81	228.79	229.81	230.42	229.33	0.47	352.81	352.93	0.03
	229.81	228.79	229.81	230.42	229.33	0.47	357.38	357.23	0.04
	293.84	291.76	293.84	265.27	265.19	0.03	357.38	357.23	0.04
	293.84	291.89	293.84	265.27	265.19	0.03	401.76	401.00	0.19
	303.71	304.22	303.71	293.85	291.76	0.72	401.76	401.00	0.19
	303.71	304.22	303.71	293.85	291.89	0.67	403.79	403.61	0.04
	318.17	318.15	318.17	303.93	304.45	0.17	403.79	403.61	0.04
	318.17	318.15	318.17	303.93	304.45	0.17	429.98	426.88	0.73
	337.94	335.63	337.94	334.81	332.51	0.69	429.98	426.88	0.73
	355.63	355.75	355.63	369.09	369.22	0.04	443.39	443.63	0.05
	355.63	355.75	355.63	369.09	369.22	0.04	443.39	443.63	0.05