噪声与振动控制

›› 2012, Vol. 32 ›› Issue (2): 102-107.DOI: 103969/j.issn.1006-1355-2012.02.025

• 5.建筑振动与建筑声学 • 上一篇    下一篇

双层板有源隔声结构物理机理研究

张献英,陈克安,胡涵,马玺越

  

  1. (西北工业大学 航海学院环境工程系， 西安 710072 ）
  • 收稿日期:2011-06-27 修回日期:2011-08-09 出版日期:2012-04-18 发布日期:2012-04-18
  • 通讯作者: 张献英

Physical Mechanisms of Active Acoustical Control for Double-panel Structure

ZHANG Xian-ying，CHEN Ke-an，HU Han，MA Xi-yue   

  1. ( Department of Environmental Engineering, College of Marine, Northwestern Polytechnical University, Xi’an 710072, China )
  • Received:2011-06-27 Revised:2011-08-09 Online:2012-04-18 Published:2012-04-18
  • Contact: ZHANG Xian-ying

摘要： 基于声振耦合动力学方程建立双层板有源隔声结构理论模型，以辐射板声功率为控制目标，求解最优控制力强度。对控制前后隔声结构近场观察面声强分布做数值仿真，从近场声强的角度对仿真结果进行分析，初步得出有源隔声结构的控制机理。

关键词: 振动与波, 双层板, 有源隔声结构, 近场声强, 振动模态

Abstract: The theoretical model of a double-layer panel for active control of sound radiation was established based on the vibro-acoustic coupling equations. Then, the optimal secondary control force was obtained by minimizing the sound power of the panel. Next, the sound intensity distribution on the observed surface was calculated. Finally, the simulation results were analyzed in terms of the sound intensity in the near-field, and a preliminary conclusion for the mechanism of active control of this structure were obtained.

Key words: vibration and wave, double panel, active sound insulation structure, near field sound intensity, vibration modal

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