Table 5: 45 Sh configuration. (a) List of experimental resonances. (b) List of numerical (FE) natural frequencies, in percentage of .
(a) 45 Sh: experimental frequencies

Mode 1~3%
Mode 214%–16%
Mode 332%–38%
Mode 4~68%

(b) 45 Sh: numerical results

Mode 12.9% (1st global torsional mode [1st TG])
Mode 27% (1st local mode of coupling [1st LC])
Mode 314.9% (2nd global torsional mode [2nd TG])
Mode 419.7% (2nd local mode of coupling [2nd LC])
Mode 536.8% (3rd local mode of coupling [3rd LC])
Mode 644% (3rd global torsional mode [3rd TG])
Mode 750.6% (1st axial mode middle flange [1st AF])
Mode 869.7% (1st bending mode output shaft [1st BS])