Study of the influence of added water and contained water on structural vibrations and acoustic radiation using different dynamic modeling methods

IF 2.5 3区工程技术 Journal of Hydrodynamics Pub Date : 2024-02-05 DOI:10.1007/s42241-024-0087-6

Li-bo Qi, Yue Yu, Huai-cheng Tang, Ming-song Zou

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Abstract

Using the 3-D sono-elasticity method and the simplified nonstructural mass method, the different dynamic modeling methods of the added water for a single-hull structure are first analyzed in this study. Then, the complete internal flow field method and the simplified nonstructural mass method of the contained water between the double hulls of a double-hull structure are investigated. Finally, based on the calculation and analysis under multiple conditions, a reasonable and simplified dynamic modeling method of added water and contained water is obtained. It is indicated that the mass of added water for a single-hull structure is closely related to the mass of total underwater displacement of the structure. With the increase in the analysis frequency, the mass of added water is characterized by first decreasing rapidly and then decreasing gradually and smoothly. The contained water between the double hulls is distributed to the pressure hull and the light shell based on the ratio of the impedances of the double hulls. The results can basically reflect the acoustic radiation characteristics of the double-hull structure.

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使用不同动态建模方法研究添加水和含水对结构振动和声辐射的影响

本研究首先使用三维声弹性法和简化非结构质量法，分析了单壳结构添加水的不同动态建模方法。然后，研究了双壳结构双壳之间所含水的完整内部流场法和简化非结构质量法。最后，基于多种条件下的计算和分析，得到了合理的添加水和包含水的简化动态建模方法。结果表明，单壳结构的加水质量与结构的水下总位移质量密切相关。随着分析频率的增加，加水质量呈现出先快速减小，然后逐渐平稳减小的特点。双层船体之间的含水量根据双层船体的阻抗比分配到压力船体和轻质壳体上。结果可以基本反映双壳结构的声辐射特性。

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来源期刊

Journal of Hydrodynamics MECHANICS-

自引率

12.00%

发文量

2374

审稿时长

4.6 months

期刊介绍： Journal of Hydrodynamics is devoted to the publication of original theoretical, computational and experimental contributions to the all aspects of hydrodynamics. It covers advances in the naval architecture and ocean engineering, marine and ocean engineering, environmental engineering, water conservancy and hydropower engineering, energy exploration, chemical engineering, biological and biomedical engineering etc.