| 方形环状活塞声源的辐射声场研究 |
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| 引用本文： | 郑珂.方形环状活塞声源的辐射声场研究[J].河南教育学院学报(自然科学版),2008,17(1):32-33. |
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| 作者姓名： | 郑珂 |
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| 作者单位： | 陕西师范大学应用声学研究所,陕西西安,710062;陕西教育学院,数理工程系,陕西西安,710061 |
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| 摘 要： | 研究了方形环状活塞声源的辐射特性，利用瑞丽积分，计算了它的远场辐射声压分布以及指向性公式。并绘出了辐射声压的远场指向性图，同时与圆形环状活塞声源的指向性作了对比．结果表明，当方形环状活塞的尺寸一定时，辐射频率增大，辐射声场指向性增强；在同一声波频率以及相同尺寸的情况下，方形环状活塞要较圆形环状活塞的远场指向性更尖锐．
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| 关 键 词： | 方形环状活塞 辐射声压 指向性 |
| 文章编号： | 1007-0834(2008)01-0032-02 |
| 修稿时间： | 2007年10月7日 |
Radiated Sound Field of Quadrate Ring Plunger |
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| ZHENG Ke.Radiated Sound Field of Quadrate Ring Plunger[J].Journal of Henan Education Institute(Natural Science Edition),2008,17(1):32-33. |
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| Authors: | ZHENG Ke |
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| Institution: | ZHENG Ke ( 1. Applied Acoustics Institute, Shanxi Normal University, Xi＇an 710062, China ; 2. Department of Mathematics and Physics Engineering, Shanxi Institute of Education, Xi＇an 710061, China) |
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| Abstract: | Radiated sound field of quadrate ring plunger is analyzed. Radiation pressure and directional formulation are calculated out by Reily-Integrate,and directional diagram is plotted. At the same time, making a contrast with the pattern of ring plunger, result shows that directivity intensifies with the increase of frequency; at the same value of frequency and size, directivity of quadrate ring plunger is more sharper than that of ring plunger. |
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| Keywords: | quadrate ring plunger radiation pressure directivity |
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