| 微穿孔吸声结构平均吸声特性分析 |
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| 引用本文： | 姜在秀.微穿孔吸声结构平均吸声特性分析[J].噪声与振动控制,2005,25(2):36-38. |
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| 作者姓名： | 姜在秀 |
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| 作者单位： | 同济大学,声学所,上海,200092 |
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| 摘 要： | 提出针对微穿孔吸声结构的"平均吸声系数"概念,并通过计算机编程计算分析确定带宽内不同微穿孔结构"平均吸声系数"的变化规律,得到微穿孔结构参数变化时"平均吸声系数"的极值及所对应的微穿孔的结构参数.所提出的微穿孔结构的设计步骤为微穿孔结构的实际应用和设计提供有价值的参考.
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| 关 键 词： | 声学 微穿孔结构 共振频率 相对声阻抗率 平均吸声系数 |
| 文章编号： | 1006-1355(2005)02-0036-03 |
| 修稿时间： | 2004年12月6日 |
Analysis of the Average Absorption Characteristics of the Microperforated Sound Absorption Structures |
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| JIANG Zai-xiu.Analysis of the Average Absorption Characteristics of the Microperforated Sound Absorption Structures[J].Noise and Vibration Control,2005,25(2):36-38. |
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| Authors: | JIANG Zai-xiu |
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| Abstract: | In this paper, the concept of "the average absorption coefficient" is put forward for the microperforated structures, and the transformation rule of "the average absorption coefficient" of different microperforated structures within certain band is computed and analyzed using computer. The extremum of "the average absorption coefficient" and its corresponding paraneters of microperforated structures are obtained when the parameters of microperforated structures change. The design process of microperforated structures proposed in this paper can offer valuable reference for the practical use and design of microperforated structures. |
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| Keywords: | acoustics microperforated structure resonance frequency relative sound impedance the average absorption coefficient |
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