| 结构噪声源识别的能量流分析方法 |
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| 引用本文： | 李天匀,刘理. 结构噪声源识别的能量流分析方法[J]. 机械工程学报, 1999, 35(3) |
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| 作者姓名： | 李天匀 刘理 |
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| 作者单位： | 华中理工大学船舶与海洋工程系 |
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| 基金项目： | 湖北省自然科学基金,上海交通大学海洋工程国家重点实验室研究基金 |
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| 摘 要： | 基于能量流理论提出了识别结构噪声源的分析方法。推导了利用两点线性加速度传感器测量能量流的互谱表达式。对测量过程中出现的主要误差进行了分析，提出了相应的减少误差的措施。通过试验验证了测量方法的精度及识别结构噪声的主要过程。
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| 关 键 词： | 振动能量流 结构噪声 识别 减振降噪 |
ENERGY FLOW ANALYSIS METHOD OF IDENTIFICATION OF STRUCTURE BORNE SOUND SOURCE |
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| Li Tianyun Liu Li Liu Shiguang. ENERGY FLOW ANALYSIS METHOD OF IDENTIFICATION OF STRUCTURE BORNE SOUND SOURCE[J]. Chinese Journal of Mechanical Engineering, 1999, 35(3) |
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| Authors: | Li Tianyun Liu Li Liu Shiguang |
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| Affiliation: | Huazhong University of Science and Technology |
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| Abstract: | An analysis method is proposed to identify structure borne sound source based on vibrational energy flow theory. The cross spectrum expression of energy flow is deduced when two linear accelerometers are arrayed to measure energy flow. Major error sources and method of their reduction are provided. The accuracy of measurement is verified by an experiment and a main procedure to identify structure borne sound source is provided. |
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| Keywords: | Vibrational energy flow Structure borne sound Identification Reducing vibration and noise |
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