噪声与振动控制Issue(2)：222-225,4.DOI:10.3969/j.issn.1006-1335.2015.02.049
空滤器结构优化和辐射噪声分析
Structure Optimization and Radiation Noise Analysis of Air Cleaners
彭卓凯 1邓志强 1黄振邦1
作者信息
- 1. 大长江集团 研发中心，广东 江门 529030
- 折叠
摘要
Abstract
Modal calculation, frequency spectrum calculation of intake pressure, topology analysis, topography analy-sis and acoustic FEM were employed to solve the serious radiation noise problem of an air cleaner’s shell. Firstly, vibration modes and eigen-frequencies of the air cleaner shell were obtained by modal computation. Secondly, the intake pressure spectrum was analyzed and the frequency zone with large intake pressure was determined. It was found that the large radia-tion noise of the air cleaner was resulted from the low 1st order frequency. Finally, the optimal position of the ribs was dis-covered by topology and topography analysis, so that the 1st order frequency of the air cleaner could be enhanced greatly. The result of the radiation noise computation show that the total sound power level of the air cleaner can be reduced by 13.8 dB after the modification and the improvement effect is very obvious.关键词
声学/空滤器/进气压力/优化/辐射噪声/有限元法Key words
acoustics/air cleaner/intake pressure/optimization/radiation noise/finite element method分类
通用工业技术引用本文复制引用
彭卓凯,邓志强,黄振邦..空滤器结构优化和辐射噪声分析[J].噪声与振动控制,2015,(2):222-225,4.
