Mode Shape Description and Model Updating of Axisymmetric Structures Using Radial Tchebichef Moment Descriptors

Table 8

Correlation coefficient and frequency deviation between the FE model and test.

Test		FE model		Frequency deviation (%)	MAC (%)	RTMAC (%)
Mode	Natural frequency (Hz)	Mode	Natural frequency (Hz)
1	634.67	2	714.66	12.60	53.57	91.74
2	642.16	1	714.40	11.25	49.73	91.74
3	864.28	3	787.41	−8.89	98.78	96.81
4	1617.86	4	1471.24	−9.06	68.15	83.74
5	1620.11	5	1473.49	−9.05	57.89	81.92
6	1928.52	9	2258.94	17.13	78.73	84.68
7	1953.65	8	2258.86	15.62	79.88	86.85
8	2452.27	7	2253.15	−8.12	93.83	86.02
9	2464.95	6	2251.54	−8.66	93.00	86.99
10	3019.31	10	2780.27	−7.92	89.98	87.02
11	3521.61	12	3266.38	−7.25	77.84	75.46
12	3526.16	11	3265.81	−7.38	80.84	79.19
13	3912.75	16	4325.20	10.54	16.45	72.05