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

Table 4

Rotation angles using different RTMs.

Double modes	The maximal RTM	The 2^nd RTM	The 3^rd RTM
(1, 2)	44.97	45.00	45.27
(4, 5)	−30.00	−30.00	−29.99
(6, 7)	89.99	89.98	90.00
(8, 9)	−22.66	−23.17	−20.60
(10, 11)	18.00	17.99	18.03
(12, 13)	−44.97	−45.01	−45.16
(15, 16)	14.91	14.74	16.02