声呐是船舶非常重要的测距、导航、目标探测工具，提升其探测精度和效率具有重要意义。由于舰船机械噪声、结构自噪声和环境噪声的影响，舰船声呐信号中掺杂着多种噪声，对于声呐探测精度有不利的影响。针对这一问题，本文分析船舶声呐的噪声来源，建立在流固耦合条件下的船舶声呐声学模型，分析了声呐结构机械自噪声的传播特性，最后基于有限元软件Ansys-Workbench进行了声呐结构的噪声特性仿真。
Sonar is a very important ranging, navigation and target detection tool for ships. It is of great significance to improve its detection accuracy and efficiency. Due to the influence of ship mechanical noise, structural self noise and environmental noise, ship sonar signal is mixed with a variety of noise, which has an adverse impact on the detection accuracy of sonar. To solve this problem, this paper analyzes the noise source of ship sonar, establishes the acoustic model of ship sonar under the condition of fluid structure coupling, analyzes the propagation characteristics of mechanical self noise of sonar structure, and finally simulates the noise characteristics of sonar structure based on the finite element software Ansys Workbench.
2022,44(15): 127-130 收稿日期：2022-02-26
DOI：10.3404/j.issn.1672-7649.2022.15.026
分类号：U646.24
基金项目：河南省科技发展技术项目(202102210279)
作者简介：田子欣(1983-)，男，副教授，主要研究方向为机械设计理论
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