Study on the Coupling Frequency of Double-Sided Submerged Ring-Stiffened Cylindrical Shells

Table 3

Natural frequencies of double-sided water immersion ring-stiffened cylindrical shell.

Modal order	Computational results (Hz)	COMSOL’s results (Hz)	Error %
(1, 2)	117.8	121.5	−3.04
(1, 3)	321.7	322.8	−0.33
(1, 4)	675.3	683.3	−1.18
(2, 3)	346.2	358.7	−3.47
(2, 4)	679.0	703.0	−3.41