| 复杂结构的声辐射解耦及其声辐射效率分析 |
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| 引用本文： | 赵志高,黄其柏.复杂结构的声辐射解耦及其声辐射效率分析[J].振动工程学报,2004,17(3):326-331. |
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| 作者姓名： | 赵志高 黄其柏 |
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| 作者单位： | 华中科技大学机械科学与工程学院,武汉,430074 |
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| 基金项目： | 国家自然科学基金资助项目 (编号 :5 0 0 75 0 2 9) |
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| 摘 要： | 提出一种用边界元方法与声辐射理论求解复杂结构的声辐射模态与声辐射效率的理论方法。先将结构的声辐射功率表示为一个正定的厄米特二次型，运用广义特征值分解求解了复杂结构的声辐射模态，然后利用声辐射模态关于阻抗矩阵与均方速度耦合矩阵的正交性，求解了复杂结构的声辐射效率，最后用具有解析解的脉动球与辐射立方体验证了该方法的有效性。
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| 关 键 词： | 声辐射 边界元法 声辐射效率 结构模态 广义特征值 |
| 修稿时间： | 2003年6月10日 |
Analysis of Acoustical Radiation Decoupling and Acoustical Radiation Efficiency of Complex Structure |
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| Zhao Zhigao,Huang Qibai.Analysis of Acoustical Radiation Decoupling and Acoustical Radiation Efficiency of Complex Structure[J].Journal of Vibration Engineering,2004,17(3):326-331. |
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| Authors: | Zhao Zhigao Huang Qibai |
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| Abstract: | A theoretical method to solve acoustical radiation modes and acoustical radiation efficiency of complex structure by a boundary element method and acoustical radiation theory is posed in this paper. The acoustical radiation power is expressed as a Hermitian quadratic form, while the radiation modes is determined by general eigenvalue decomposing, and then the radiation efficiency is computed via the orthodoxy of radiation modes with regards to impedance matrix and average velocity matrix; lastly, the validity of the method is proved by pulsating sphere and radiating cube with analytical results. |
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| Keywords: | acoustical radiation boundary element radiation mode radiation efficiency |
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