摘要
为研究单壳体和双壳体两种典型潜艇结构的振动声辐射特性,本文建立单/双层桨-轴-壳体简化模型,利用三维水弹性力学理论和三维水弹性声学分析软件,分别计算螺旋桨激励、外部流体激励以及机械激励3种激励源下水下结构的辐射声功率声源级曲线。结果表明:螺旋桨激励下,单层水下结构声辐射略低于双层结构;外部流体和内部机械设备激励下,单层水下结构声辐射明显高于双层结构。
To research the vibration and acoustic radiation characteristics of the single-layer and double-layer underwater structure which are the typical structures of the submarine, the single-layer and double-layer propeller-shaft-hull coupled structures are established, the three-dimensional sono-elastical theory and acoustic analysis software are applied to analyze the sound source level curve of the coupled structure under three different exciting such as propeller exciting, external fluid exciting and internal mechanical exciting. The analysis results show that the total radiated acoustic power of single-layer underwater structure is less than double-layer under propeller exciting, but higher than double-layer under external fluid exciting and internal mechanical exciting.
作者
何其伟
李海峰
俞翔
HE Qi-wei LI Hai-feng YU Xiang(Office of Research and Design, Naval University of Engineering, Wuhan 430033, China National Key Laboratory on Ship Vibration and Noise, Wuhan 430033, China College of Power Engineering, Naval University of Engineering, Wuhan 430033, China)
出处
《舰船科学技术》
北大核心
2017年第1期17-20,共4页
Ship Science and Technology
基金
国家自然科学基金资助项目(51579242)
关键词
单/双层结构
桨-轴-壳体
振动
声辐射
声源级
Single and double layers structure
propeller-shaft-hull
vibration
acoustic radiation
sound source level