Study on acoustic vibration similarity law of complex stiffened cone-cylinder combined shell

阶数	原型频率/Hz	缩尺模型频率/Hz	倍率关系	阶数	原型频率/Hz	缩尺模型频率/Hz	倍率关系
1	8.1769	32.840	4.02	8	37.943	151.81	4.00
2	17.115	69.110	4.04	9	39.324	162.42	4.13
3	17.180	69.355	4.04	10	39.446	163.10	4.13
4	24.460	100.34	4.10	11	51.852	207.72	4.01
5	30.703	125.35	4.08	12	52.672	211.19	4.01
6	33.470	133.94	4.00	13	52.715	211.39	4.01
7	37.721	150.92	4.00	14	52.753	211.47	4.01

Table 2. Wet modal frequency of stiffened cone-cylinder combined shells

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Table 2. Wet modal frequency of stiffened cone-cylinder combined shells

阶数	原型频率/Hz	缩尺模型频率/Hz	倍率关系	阶数	原型频率/Hz	缩尺模型频率/Hz	倍率关系
1	4.016	16.025	3.99	8	25.833	109.080	4.22
2	8.816	35.714	4.05	9	27.128	112.514	4.14
3	10.911	45.735	4.19	10	29.214	114.062	3.91
4	15.814	66.846	4.23	11	31.724	124.208	3.92
5	18.601	78.223	4.21	12	33.222	140.557	4.23
6	21.596	88.504	4.10	13	34.035	141.900	4.17
7	24.260	95.861	3.95	14	36.500	147.535	4.04

Table 3. Similarity relation of radiated sound pressure
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Table 3. Similarity relation of radiated sound pressure
原型频率/Hz 缩尺模型频率/Hz 原型辐射声压/(N·m⁻²）缩尺模型辐射声压/(N·m⁻²）倍率关系
11 44 −0.000 496 −0.008 16.1
36 144 0.000 251 8 0.004 15.9
90 360 0.004 0.064 16

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Caigeng PENG, Shiyang ZHANG, Guanjun ZHANG. Study on acoustic vibration similarity law of complex stiffened cone-cylinder combined shell[J]. Chinese Journal of Ship Research, 2022, 17(2): 165

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