Research Article

Comparison Study on the Exact Dynamic Stiffness Method for Free Vibration of Thin and Moderately Thick Circular Cylindrical Shells

Table 4

Lowest natural frequencies () of a moderately thick circular cylindrical shell with different circumferential wave numbers .

ā€‰

2Present0.037240.023490.024490.036640.056320.038930.049390.07726
Reference [31]0.037300.023590.024620.036860.056520.039290.049960.07821
Reference [32]0.037300.023650.024700.036870.056530.039440.050090.07833

1Present0.058610.049690.047650.055080.094200.085010.089950.11056
Reference [31]0.058530.049780.047890.055450.094020.085450.090930.11205
Reference [32]0.058560.049860.047990.055500.094090.085620.091090.11202

0.5Present0.100870.102380.106580.114630.189150.194060.204510.22180
Reference [31]0.100570.102340.106880.115280.188940.194670.206160.22450
Reference [32]0.100470.102240.106740.115080.188320.194030.205440.22361

0.25Present0.273100.276500.282190.290200.497510.502990.512160.52506
Reference [31]0.274910.278490.284470.292870.503380.509370.519340.53325
Reference [32]0.272860.276410.282330.290640.498180.504180.514160.52808