| 实验测量声辐射模态 |
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| 引用本文： | 毛崎波,皮耶奇克 S.实验测量声辐射模态[J].振动工程学报,2012,25(3):330-334. |
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| 作者姓名： | 毛崎波 皮耶奇克 S |
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| 作者单位： | 1. 南昌航空大学飞行器工程学院,江西南昌,330063
2. 瑞士联邦材料科学与技术研究所,迪本多夫CH-8600瑞士 |
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| 摘 要： | 通过实验方法测量得到振动结构的声辐射模态及其辐射效率。首先通过辐射算子分析任意结构的声辐射模态,然后根据互换原理,在远场布置声源,通过测量结构表面声压,得到辐射算子。最后以一平面玻璃板为例进行实验研究,通过互换方法测量了前5阶声辐射模态和对应的辐射效率。实验结果表明通过互换方法测量声辐射模态是可行的。
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| 关 键 词： | 声辐射模态 辐射效率 辐射算子 振动结构 互换原理 |
| 收稿时间： | 2011/9/13 0:00:00 |
| 修稿时间： | 2012/5/25 0:00:00 |
Experimental Measurement of Radiation Modes |
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| MAO QIBO and.Experimental Measurement of Radiation Modes[J].Journal of Vibration Engineering,2012,25(3):330-334. |
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| Authors: | MAO QIBO and |
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| Affiliation: | MAO Qi-bo1,PIETRZKO Stanislaw2(1.School of Aircraft Engineering,Nanchang HangKong University,Nanchang 330063,China;2.Swiss Federal Laboratories for Materials Science and Technology,Ueberlandstrasse 129,Duebendorf,CH-8600,Switzerland) |
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| Abstract: | A technique to measure the mode shapes and corresponding radiation efficiencies of the sound radiation for vibrating structures is proposed.First,the radiation operator is imposed to analyze the radiation mode for arbitrary structures.Then the reciprocal principle is used to obtain the experimental version of radiation operator by placing a source with known volume velocity in the far-field and measuring pressure on surface of the structure.Finally with an example of a rectangular glass plate,experimental study was carried out to verify the proposed method.The mode shapes and corresponding radiation efficiencies for the first five radiation modes were measured.The experimental results show the feasibility of the proposed reciprocity method. |
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| Keywords: | sound radiation mode radiation efficiency radiation operator vibrating structure reciprocal principle |
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