›› 2011, Vol. 31 ›› Issue (4): 60-63.DOI: 10.3969/j.issn.1006-1355-2011.04.014

• 2.振动理论与数值解法 • Previous Articles     Next Articles

Prediction and Validation of Aircraft Cabin Noise by Hybrid FE-SEA Method at Mid-frequency Range

LI Bing 1,CHEN Ke-an 1,PAN Kai 2,HU Ying 1   

  1. ( 1. Department of Environmental Engineering, College of Marine, Northwestern PolytechnicalUniversity, Xi’an 710072, China; 2. Aircraft Strength Research Institute of China, Xi’an, 710072, China )
  • Received:2010-10-13 Revised:2010-12-17 Online:2011-08-18 Published:2011-08-18
  • Contact: LI Bing

飞机舱内中频噪声的FE-SEA混合法预测及验证

李冰,陈克安,潘凯,胡莹   

  1. （ 1.西北工业大学 航海学院环境工程系， 西安 710072；2. 中国飞机强度研究所， 西安 710065 ）
  • 通讯作者: 李冰

Abstract: Prediction and experimental verification of aircraft cabin noise modeled by the hybrid FE-SEA method is carried out. The method of subsystem dividing of the cabin is introduced. The cabin’s noise spectrums in mid-frequency range under 4 different excitation conditions are simulated and thereafter compared with measurement results. It is shown that the hybrid FE-SEA method based approach is more accurate than the conventional Statistical Energy Analysis (SEA) method in predicting mid-frequency noise inside the aircraft cabin.

Key words: acoustics, aircraft cabin noise, hybrid FE-SEA method, noise prediction, mid-frequency

摘要： 采用FE - SEA混合法，建立飞机舱室内噪声预测模型，提出飞机舱室的子系统划分方法，并开展4种不同激励条件下舱内噪声中频噪声预测研究。通过仿真和实验结果的对比分析，验证FE - SEA混合法在预测舱内中频噪声方面的准确性和有效性。分析结果表明：FE-SEA混合法能够比SEA方法更有效地预测舱内中频段的噪声。

关键词: 声学, 舱内噪声, FE - SEA混合法, 噪声预测, 中频

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