航行过程中，潜艇壁面与周围流场相互作用而产生的流激噪声会对透声窗结构产生严重危害，因此，有效控制流激噪声具有非常重要的意义。首先采用统计能量法对潜艇首部模型进行流激噪声预报，根据不同航速以及距湍流层前端距离进行分析，得出不同材料对流激噪声的影响规律；其次，针对导流罩低噪声和高透声的要求提出一种3层复合夹芯结构设计，通过选用阻尼材料和设计4种铺层方案对比分析。结果表明，铺层方案为碳纤维/阻尼材料2/钛合金，铺层厚度为10 mm/10 mm/3.55 mm是降噪性能好、透声性强的最优方案，研究成果可为实际应用提供参考。
During the voyage, the flow-induced noise caused by the interaction between the submarine wall and the surrounding flow field will cause serious harm to the sound transmission window structure.Therefore, it is of great significance to effectively control the flow-induced noise. First of all, the statistical energy method is used to predict the flow-induced noise of the submarine bow model, and the influence law of convection-induced noise of different materials is obtained according to the different speed and the distance from the front end of the turbulent layer. Secondly, according to the requirements of low noise and high sound transmission of the sonar dome, a three-layer composite sandwich structure design is proposed, and four kinds of laying schemes are compared and analyzed through the selection of damping materials and the design of four kinds of lamination schemes. Finally, it is concluded that when the laying scheme is carbon fiber / damping material 2 / Titanium alloy and the thickness of the layer is 10 mm/10 mm/3.55 mm, it is the best scheme with good noise reduction performance and strong sound permeability, which provides an important reference value for practical application.
2024,46(8): 75-80 收稿日期：2022-11-4
DOI：10.3404/j.issn.1672-7649.2024.08.014
分类号：O427.4
基金项目：江苏省高等学校自然科学研究面上项目（Grant No.20KJB580009）；国家自然科学基金青年项目（52210366）
作者简介：徐强(1995-),男,硕士研究生,研究方向为振动噪声控制
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