Calculation method of underwater acoustic and vibration response of cabin segment based on onshore vibration test

参数	数值	参数	数值
直径D/mm	1 500	基座长a/mm	600
舱长L₁ /mm	2 000	基座宽b/mm	388
壳体厚度t₁ /mm	6	基座高h/mm	250
环肋厚度d/mm	8	基座面板厚度t₂ /mm	10
环肋高度h_r /mm	20	基座腹板厚度t₃ /mm	15
肋距l_r /mm	400

Table 2. The natural frequencies of simply-supported cabin segment at both ends

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Table 2. The natural frequencies of simply-supported cabin segment at both ends

真空中固有频率/Hz	水中固有频率/Hz		误差/%
真空中固有频率/Hz	本文方法	FEM/FEM	误差/%
56.54（第1阶）	45.28	48.21	6.09
99.67（第2阶）	51.59	53.44	3.46
110.41（第3阶）	56.19	54.73	2.66
118.04(5/1)	63.25	62.08	1.89
128.81(3/1)	61.16	61.82	1.07
161.03(6/1)	89.06	88.78	0.31
212.98(6/2)	119.76	119.36	0.34
214.32(7/1)	122.95	121.01	1.60
241.23(7/2)	140.79	141.63	0.59
283.85(8/1)	156.36	159.90	2.22

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Guangsheng LI, Meixia CHEN, Chunhui YUAN. Calculation method of underwater acoustic and vibration response of cabin segment based on onshore vibration test[J]. Chinese Journal of Ship Research, 2022, 17(6): 252

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Paper Information

Category: Ship Structure and Fittings

Received: Jun. 15, 2021

Accepted: --

Published Online: Mar. 26, 2025

The Author Email:

DOI:10.19693/j.issn.1673-3185.02414

Topics

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