Faster Calculation of the Low-Frequency Radiated Sound Power of Underwater Slender Cylindrical Shells

Table 5

The first five natural bending frequencies of the underwater stiffened cylindrical shell with different stiffener spacings.

Stiffener parameters (m)	Order m
	Spacing (m)	1 (Hz)	2 (Hz)	3 (Hz)	4 (Hz)	5 (Hz)
Height 0.125; Width 0.007	0.2	5.16	13.83	25.16	38.02	51.48
	0.4	5.17	13.94	25.34	38.35	52.09
	0.8	5.17	14.00	25.45	38.56	52.39