Analysis on coupling characteristics of truss box floating raft-submarine hull and vibration isolation effect in full-frequency range

阶次	模型	固有频率/Hz	振型
1	含艇体	50.626	弯扭
1	不含艇体	50.618	弯扭
2	含艇体	64.563	横弯
2	不含艇体	64.512	横弯
3	含艇体	73.424	扭转
3	不含艇体	73.358	扭转
4	含艇体	82.523	弯扭
4	不含艇体	82.437	弯扭
5	含艇体	90.257	扭转
5	不含艇体	90.255	扭转
6	含艇体	100.340	扭转
6	不含艇体	100.230	扭转

Table 2. The natural frequency and vibration modes corresponding to the first six global modal shape of the hull structure

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Table 2. The natural frequency and vibration modes corresponding to the first six global modal shape of the hull structure

阶次	模型	固有频率/Hz	振型
1	含筏架	56.062	（1，3）
1	不含筏架	55.402	（1，3）
2	含筏架	58.944	（1，2）
2	不含筏架	58.708	（1，2）
3	含筏架	66.181	（1，3）
3	不含筏架	65.670	（1，3）
4	含筏架	66.485	（1，2）
4	不含筏架	65.893	（1，2）
5	含筏架	75.829	（1，2）
5	不含筏架	73.318	（1，2）
6	含筏架	81.134	（2，2）
6	不含筏架	80.297	（2，2）

Table 3. Mass information of truss box floating raft-hull coupling system
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Table 3. Mass information of truss box floating raft-hull coupling system
工况面板厚度/mm 筏架质量/t 设备总质量/t 艇体质量/t 总质量/t
1 8 21.86 9.79 64.87 96.52
2 10 22.87 9.79 64.87 97.53
3 12 23.88 9.79 64.87 98.54
4 14 24.89 9.79 64.87 99.55
5 16 25.89 9.79 64.87 100.55

Table 4. Designed dynamic stiffness parameters of vibration isolator
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Table 4. Designed dynamic stiffness parameters of vibration isolator
隔振器刚度垂向动刚度/(N·mm⁻¹）径向动刚度/(N·mm⁻¹）
刚度1 2 000 2 000
刚度2 3 000 3 000
刚度3 4 000 4 000
刚度4 5000 5 000

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Chenggang LYU, Zhuang WANG, Xiaobin LI, Wei CHEN. Analysis on coupling characteristics of truss box floating raft-submarine hull and vibration isolation effect in full-frequency range[J]. Chinese Journal of Ship Research, 2022, 17(2): 173

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Paper Information

Category: Ship Structure and Fittings

Received: Nov. 30, 2020

Accepted: --

Published Online: Mar. 24, 2025

The Author Email:

DOI:10.19693/j.issn.1673-3185.02208

Topics

laser devices and laser physics

Lasers and Laser Optics

Laser physics

laser manufacturing

Instrumentation, Measurement and Metrology

Table 1. The natural frequency corresponding to the first six global modal shapes of the truss box floating raft

Table 1. The natural frequency corresponding to the first six global modal shapes of the truss box floating raft

Table 2. The natural frequency and vibration modes corresponding to the first six global modal shape of the hull structure

Table 2. The natural frequency and vibration modes corresponding to the first six global modal shape of the hull structure

Table 3. Mass information of truss box floating raft-hull coupling system

Table 3. Mass information of truss box floating raft-hull coupling system

Table 4. Designed dynamic stiffness parameters of vibration isolator

Table 4. Designed dynamic stiffness parameters of vibration isolator