压缩机机体声辐射的模态特性研究Acoustic Radiation Modal Analysis of Compressor Block
刘成武;钱林方;
LIU Cheng-wu,QIAN Lin-fang(Nanjing University of Science&Technology,Nanjing 210094,China)
摘要(Abstract)：
采用有限元和边界元方法建立了轻流体介质中复杂结构振动声辐射的模态分析模型,可计算结构的声辐射模态频率、模态场点声压、模态辐射声功率和声辐射效率等声场特性参数。对K5206NM压缩机机体进行了模态分析和声辐射模态参数计算,获得了机体的声辐射特性,从而为机体的低噪声设计提供了依据。
Using Finite Element and Boundary Element Method,a modal analysis model of complex structural acoustic radiation in light fluid is proposed for computing modal acoustic radiation frequency,farfield sound pressure,modal radiated acoustic power and acoustic radiation efficiency.Modal analysis of K5206NM compressor block is done,and the acoustic radiation modal parameters are calculated,then the acoustic radiation properties of the compressor block can be obtained,which provide the basis for the low noise compressor block design.
关键词(KeyWords)：
压缩机机体;振动模态;声辐射模态;有限元方法;边界元方法
compressor block;vibration mode;acoustic radiation mode;FEM;BEM
基金项目(Foundation):
作者(Authors):
刘成武;钱林方;
LIU Cheng-wu,QIAN Lin-fang(Nanjing University of Science&Technology,Nanjing 210094,China)
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