Acoustic radiation of composite egg-shaped pressure hulls

被引：0
|
作者：
Wu J. [1 ,2 ,3 ]
Li H.-Y. [2 ,3 ]
Zhang T.-T. [2 ,3 ]
Wang W.-B. [2 ,3 ]
机构：
[1] National Key Laboratory on Ship Vibration & Noise, Naval University of Engineering, Wuhan
[2] National Key Laboratory on Ship Vibration & Noise, China Ship Scientific Research Center, Wuxi
[3] Jiangsu Key Laboratory of Green Ship Technology, Wuxi
来源：
Chuan Bo Li Xue/Journal of Ship Mechanics | 2022年 / 26卷 / 07期
关键词：
Acoustic radiation; Composite material; Egg-shaped; Numerical analysis; Pressure hull;
D O I：
10.3969/j.issn.1007-7294.2022.07.014
中图分类号：
学科分类号：
摘要：
Taking composite egg-shaped pressure hulls with equal volume and uniform thickness as the research object to study underwater acoustic radiation, the thickness of an egg-shaped pressure hull was determined through strength and buckling analysis. An acoustic-solid coupling model was established with finite element and infinite element method. The influence of design parameters such as material type, excitation location, egg-shaped coefficient, composite material thickness and winding angle on radiation noise was analyzed. Finally, a conceptual egg-shaped pressure hull composed of composite material and metal was proposed, and the radiation noise was analyzed. Results show that when the composite egg-shaped pressure hull is excited along the normal direction of the egg-shaped curve, the medium and high frequency radiation noise is lower than that of titanium. The thickness of a carbon fiber egg-shaped pressure hull has little effect on the radiation noise. When the winding angle is ±50°, the weight and radiation noise of an egg-shaped pressure hull is relatively low. The radiation noise excited at the same point decreases gradually as the egg shape coefficient increases. The radiation noise excited at the blunt end can be significantly reduced by adopting a metal head at the blunt end. The influence rules can serve as an effective reference for the design and application of low noise bionic egg-shaped pressure hulls. © 2022, Editorial Board of Journal of Ship Mechanics. All right reserved.
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页码：1088 / 1096
页数：8
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