Research Article

Investigation on Free Vibration of Rotating Cylindrical Shells with Variable Thickness

Table 2

DFP of backward wave for the RCS.

nSaito and Endo [27]Present
nmax = 8nmax = 9nmax = 10nmax = 11nmax = 12nmax = 13

0.002520.059930.059890.059870.059870.059860.059860.05986
30.114550.114620.114610.114610.114610.1146410.11461
40.213130.213170.213170.213170.213160.213160.21316
50.342250.342260.342260.342260.342250.342250.34225

0.005020.062160.062120.062100.062100.062090.062090.06209
30.116520.116600.116590.116590.116590.116590.11659
40.214860.214900.214900.214900.214900.214900.21490
50.343800.343810.343810.343810.343810.343810.34381