| 基于不相干平面波叠加以模拟混响声场的航天器低频声固耦合分析 |
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| 引用本文： | 高强,邹元杰.基于不相干平面波叠加以模拟混响声场的航天器低频声固耦合分析[J].航天器环境工程,2015,32(1):21-27. |
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| 作者姓名： | 高强 邹元杰 |
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| 作者单位： | 北京空间飞行器总体设计部,北京,100094 |
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| 基金项目： | 国防预研项目(编号:51334050101) |
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| 摘 要： | 文章针对航天器在混响声场中的随机振动问题,提出一种通过多个不相干的平面波线性叠加以模拟混响声场的实现方法,给出了每个平面波的具体参数并从理论上证明其满足理想混响声场假设。在此基础上利用有限元-边界元耦合方法对整星低频声固耦合问题进行分析,并用混响室噪声试验响应数据进行了验证。研究结果表明:该方法理论推导正确,为航天器低频声固耦合分析及声振力学环境预示提供了一种新的有效手段。
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| 关 键 词： | 声固耦合 混响声场 平面波叠加 有限元-边界元耦合方法 |
| 收稿时间： | 2014/8/22 0:00:00 |
| 修稿时间： | 2015/1/22 0:00:00 |
Low-frequency acoustic-structure coupling analysis of spacecraft based on acoustic diffusion field modeled with combined uncorrelated plane waves |
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| Gao Qiang,Zou Yuanjie.Low-frequency acoustic-structure coupling analysis of spacecraft based on acoustic diffusion field modeled with combined uncorrelated plane waves[J].Spacecraft Environment Engineering,2015,32(1):21-27. |
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| Authors: | Gao Qiang Zou Yuanjie |
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| Institution: | Beijing Institute of Spacecraft System Engineering, Beijing 100094, China |
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| Abstract: | The vibro-acoustic analysis is one of the important parts in the spacecraft design. This paper proposes a method to model the acoustic diffusion field by combining uncorrelated plane waves linearly and its justification is shown theoretically. The parameters for each plane wave are also obtained in the paper. After that, a satellite vibro-acoustic problem is simulated using the FEM-BEM method and the results are validated by the test data, which shows that the method is theoretically correct and could be used to analyze the vibro-acoustic response of spacecraft. |
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| Keywords: | acoustic-structure coupling diffuse acoustic field plane waves overlapping FEM-BEM coupling method |
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