反照率涂层优化潜艇声隐身性能的研究

IF 1.3 Q3 ACOUSTICS Acoustics (Basel, Switzerland) Pub Date : 2022-04-11 DOI:10.3390/acoustics4020022
Callum Daniels, N. Perera
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引用次数: 0

摘要

由于部署的性质,很少有人知道潜艇在海上的位置和航向,包括船上的少数船员。英国及其盟友立即进行报复的可能性得益于该潜艇在任何时候都不被SONAR发现的能力。为了研究一种改进声隐身的方法,在ANSYS上建立了一个有限元模型,对代表SONAR的Alberich涂层和阻声波的单元进行建模。将广泛使用的声阻抗方程简化为MATLAB代码,以获得应用于模型的阻抗值,代替水荷载边界。使用五组模拟的结果,对优化的艾伯里奇涂层进行了建模,该涂层包含26毫米的球形空腔、40毫米的消声层和30毫米长的钢背板。与使用的其他模型相比,该优化模型通过在频率范围两端显示出更大的声学吸收,改善了潜艇的声学隐身性,表明阿尔伯里奇风格的涂层可用于改善声学隐身,以对抗新的低频SONAR。
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Investigation of Alberich Coating to Optimise Acoustic Stealth of Submarines
Due to the nature of their deployment, very few people know the location and course of a submarine during its time at sea, including only a handful of the ship’s crew. The possibility of immediate retaliation by the UK and her allies is aided by the submarine’s ability to remain undetected by SONAR at all times. To investigate one method for improving acoustic stealth, a finite element model (FEM) was created on ANSYS to model a unit-cell of an Alberich coating and impeding sound wave representative of SONAR. A simplification of a widely used acoustic impedance equation was adopted into MATLAB code to attain values of impedance that were applied to the model in place of a water loading boundary. Using the results given by five sets of simulations, an optimised Alberich coating was modelled, containing a 26 mm spherical cavity, 40 mm anechoic layer and 30 mm long steel backplate. This optimised model improved the acoustic stealth of submarines by displaying greater acoustic absorption at both ends of the frequency range, compared with other models used, showing that Alberich-style coatings can be used to improve acoustic stealth, to combat new low-frequency SONAR.
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CiteScore
3.70
自引率
0.00%
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审稿时长
11 weeks
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