| 焦风雷,刘克,丁辉.关于微穿孔板吸声体频带宽度极限的讨论[J].,2001,20(6):36-40 |
| 关于微穿孔板吸声体频带宽度极限的讨论 |
| Discussions on the utmost frequency band of a microperforated- panel absorber |
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| 中文摘要: |
| 依据马大猷教授的微穿孔板吸声体准确理论，利用计算机辅助设计对于该结构频带宽度极限情况从理论上进行了讨论，把极限频宽和最大吸声系数的制约关系量化，并得到此情况下应用于低频或高频环境孔径的选用范围，以及此情况下板厚和穿孔率与传统观念不同的特点。以上分析结果以及所提供的结构参数为宽频带微穿孔板的具体设计提供有价值的参考． |
| 英文摘要: |
| Based on Prof. Maa Dah-You’s general theory of the microperforated panel (MPP) absorber, the discussions on the utmost frequency band of MPP are made in this paper, including the relation between the utmost frequency band and the maximal absorpti on coefficient. Selectable diameters of perforations of MPP applicable to inter-mediate or lower frequency are offered. We propose that the choosing of panel thickness and percentage of perforated area of MPP can be quite different from that in the tradi-tional design. |
| DOI：10.11684/j.issn.1000-310X.2001.06.009 |
| 中文关键词: 微穿孔板吸声体 极限频带宽度 |
| 英文关键词: Microperfortaed-panel absorber Utmost frequency band |
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