• CN:11-2187/TH
  • ISSN:0577-6686

›› 1999, Vol. 35 ›› Issue (3): 29-33.

• 论文 • 上一篇    下一篇

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结构噪声源识别的能量流分析方法

李天匀;刘理;刘士光   

  1. 华中理工大学船舶与海洋工程系
  • 发布日期:1999-05-01

ENERGY FLOW ANALYSIS METHOD OF IDENTIFICATION OF STRUCTURE BORNE SOUND SOURCE

Li Tianyun;Liu Li;Liu Shiguang   

  1. Huazhong University of Science and Technology
  • Published:1999-05-01

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。

关键词: 减振降噪, 结构噪声, 识别, 振动能量流

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.

Key words: Identification, Reducing vibration and noise, Structure-borne sound, Vibrational energy flow

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