船用某型空压机结构辐射噪声特性计算分析  

Calculation and Analysis of Radiation Noise Characteristics of a Type of Marine Air Compressors

作　　者：薛厚强 张冠军 胡龙飞 郑立平 XUE Houqiang;ZHANG Guanjun;HU Longfei;ZHENG Liping(Key Laboratory of High Performance Ship Technology of Ministry of Education,Wuhan University of Technology,Wuhan 430063,China;School of Energy and Power Engineering,Wuhan University of Technology,Wuhan 430063,China;No.4812 PLA Factory,Anqing 246001,Anhui,China)

机构地区：[1]武汉理工大学高性能船舶技术教育部重点实验室,武汉430063 [2]武汉理工大学能源与动力工程学院,武汉430063 [3]中国人民解放军第四八一二工厂,安徽安庆246001

出　　处：《噪声与振动控制》2021年第4期115-121,共7页Noise and Vibration Control

基　　金：国家自然科学基金资助项目(51909201);高性能船舶技术教育部重点实验室开放基金课题资助项目(gxnc18041401)。

摘　　要：空压机结构辐射噪声直接给舰船声隐身性带来隐患。为研究船用某型空压机结构辐射噪声特性,采用有限元/边界元法对其进行计算分析。分别建立空压机几何三维模型、有限元动力学模型以及声学边界元模型。将曲轴转动产生的动态激励作为结构振动响应计算的原始载荷,基于有限元法求解空压机结构的振动响应。在此基础上,结合四节点插值算法将机体振动数据映射为辐射噪声计算的边界条件,采用边界元法求解其辐射噪声特性,并基于声学传递向量法分析空压机噪声辐射的主要部位。研究表明:气缸体对空压机整体噪声水平影响较大,声波辐射具有一定指向性,结构辐射噪声水平在360 Hz以及770 Hz至840 Hz处较高。The radiation noise of air compressors can directly bring hidden dangers to the acoustic invisibility of ships.In this paper,the FEM/BEM was used to study structural radiation noise characteristics of a certain type of marine air compressors.The solid three-dimensional model,the finite element dynamic model and the acoustic boundary element model of the air compressor were established respectively.The dynamic excitation generated by the crankshaft was used as the original load input and the vibration response of the air compressor structure was calculated by the FEM.On this basis,the four-node interpolation algorithm was used to map the vibration data of the compressor structure to the boundary condition for noise calculation.The boundary element method was used to solve the radiation noise characteristics,and the main part of the airborne noise radiation was analyzed by the ATV.The research shows that the cylinder block has a great influence on the overall noise level of the air compressor.The acoustic radiation has some directivity and the structure radiation noise level is higher at 360 Hz and around 770 Hz-840 Hz.

关 键 词：声学 空压机 有限元法 边界元法 结构噪声 面板声学 

分 类 号：U66[交通运输工程—船舶及航道工程] TB533.1[交通运输工程—船舶与海洋工程]