An Improved Fourier Series Method for the Free Vibration Analysis of the Three-Dimensional Coupled Beams

Table 7

The first ten natural frequencies of propulsion shafting f/Hz.

Model	1	2	3	4	5
Current	26.42	27.93	55	79.02	82.41
ANSYS	26.53	27.86	54.74	78.66	81.87
Error%	0.42	0.26	0.47	0.45	0.65
Model	6	7	8	9	10
Current	134.89	146.75	175.84	181.77	271.76
ANSYS	133.4	145.8	174.02	179.71	266.28
Error%	1.11	0.64	1.03	1.14	2.02