A Study on Mode Shape and Natural Frequency of Rotating Flexible Cracked Annular Thin Disk

Table 2

The natural frequency change ratios of the flexible cracked disk with intersection angle of 80° relative to flawless disk.

Order	1	2	3	4	5	6	7	8	9
RO16_A80	0.09	−0.09	0.01	−0.34	−0.30	−0.96	−0.41	−2.27	−0.48
RC16_A80	−0.39	−0.24	−0.06	0.01	0.09	0.02	0.10	−0.03	0.09