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2009年 2月噪声与振动控制第 1期
文章编号: 1006 1355 (2009) 01 0046 03 9 9
采用 FEM /BEM 法对管道噪声辐射仿真分析研究
岳恒昌, 陈兵, 尹忠俊
(北京科技大学机械工程学院, 北京 100083)
摘要: 建立有限长的圆柱管道壳体振动与声辐射的有限元和边界元的三维模型,结合有限元模态分析和实
验模态分析对管道结构进行分析,将 ANSYS模态分析的结果导入 SYSNO ISE中,利用 SYSNO ISE计算了流体- 结
构相耦合状态下的管道模型的声辐射功率级;研究不同约束、厚度和阻尼对管道振动声辐射的影响,给出有助于抑
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制管道结构振动和声辐射的建议。
关键词: 管道噪声; SYSNO ISE;声功率;模态分析;仿真
中图分类号: TB533. 1 文献标识码: A
S im ula tion and Ana lysis of P ipe No ise Rad ia tion w ith FEM /BEM
YU E Heng chang, CHEN B ing, YIN Zhong jun
( School ofMechanical Engineering, University of Science and Technology Beijing, Beijing 100083, China)
Abstract: A three dimensional shell model of finite element method and boundary element method
puting vibration and acoustic radiation of a finite cylindrical p ipe is established. The vibration
modes of the p ipe shell are analyzed numerically and experimentally. Results of the mode analysis with
ANSYS code are input to BEM software SYSNO ISE. Then the sound radiation power level of the fluid
structure coup ling model of the p ipe is obtained. Influence of various constraint conditions, thickness and
damp ing on the sound radiation of p ipe vibration is studied. Suggestions for reducing structural vibration
and acoustic radiation are p roposed.
Key words: p ipe noise; SYSNO ISE; sound power level; mode analysis; simulation
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