| 彭涛,韩鹏程,刘兴强,燕群,邹学锋,戚志民.基于混合FE-SEA方法的加筋板宽频隔声预计[J].装备环境工程,2022,19(9):32-38. PENG Tao,HAN Peng-cheng,LIU Xing-qiang,YAN Qun,ZOU Xue-feng,QI Zhi-min.Prediction of Broadband Sound Insulation of Stiffened Panels Based on Hybrid FE-SEA Method[J].Equipment Environmental Engineering,2022,19(9):32-38. |
| 基于混合FE-SEA方法的加筋板宽频隔声预计 |
| Prediction of Broadband Sound Insulation of Stiffened Panels Based on Hybrid FE-SEA Method |
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| DOI：10.7643/issn.1672-9242.2022.09.006 |
| 中文关键词: 加筋板 混合FE-SEA法 隔声预计 宽频 飞行器中图分类号:TJ85 文献标识码:A 文章编号:1672-9242(2022)09-0032-07 |
| 英文关键词:stiffened plate hybrid FE-SEA method sound insulation broadband aircraft |
| 基金项目:航空科学基金(20200015023003) |
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| Author | Institution |
| PENG Tao | Aviation Science and Technology Key Laboratory of Aeronautical Acoustics and Vibration Intensity, Aircraft Strength Research Institute of China, Shaanxi Xi'an 710065, China |
| HAN Peng-cheng | Aviation Science and Technology Key Laboratory of Aeronautical Acoustics and Vibration Intensity, Aircraft Strength Research Institute of China, Shaanxi Xi'an 710065, China |
| LIU Xing-qiang | Aviation Science and Technology Key Laboratory of Aeronautical Acoustics and Vibration Intensity, Aircraft Strength Research Institute of China, Shaanxi Xi'an 710065, China |
| YAN Qun | Aviation Science and Technology Key Laboratory of Aeronautical Acoustics and Vibration Intensity, Aircraft Strength Research Institute of China, Shaanxi Xi'an 710065, China |
| ZOU Xue-feng | Aviation Science and Technology Key Laboratory of Aeronautical Acoustics and Vibration Intensity, Aircraft Strength Research Institute of China, Shaanxi Xi'an 710065, China |
| QI Zhi-min | Aviation Science and Technology Key Laboratory of Aeronautical Acoustics and Vibration Intensity, Aircraft Strength Research Institute of China, Shaanxi Xi'an 710065, China |
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| 中文摘要: |
| 目的 预测有限尺寸加筋平板结构宽频范围内的隔声特性，指导飞行器结构声学设计。方法 基于混合FE-SEA方法，对单向加筋平板结构开展宽频隔声预计。同时，在标准声学试验室对其进行隔声测试，并将FE-SEA法预计结果与测试结果、SEA方法计算结果进行对比分析。结果 与SEA法相比，混合FE-SEA方法在50 Hz~10 kHz频带内的预计结果与试验结果更为吻合，其更适用于宽频隔声预计；在400 Hz~10 kHz的中高频段内，FE-SEA方法预计结果与试验结果基本相同；在50 Hz~400 Hz的低频段内，FE-SEA方法预计结果略高于试验结果，且随频率降低，偏差会逐渐增大。结论 进行加筋板结构声学设计时，为了获得精确的宽频隔声预计结果，可首先选用FE-SEA方法。FE-SEA方法预计结果在中高频段可直接使用，在低频段仅能作为参考，使用时应当进行修正。 |
| 英文摘要: |
| This paper aims to predict the broadband sound insulation characteristics of finite size stiffened plates and guide the acoustic design of the aircraft. The hybrid FE-SEA method is used to predict the acoustic characteristics of unidirectional stiffened plate structures. At the same time, the sound insulation test is carried out in a standard acoustic laboratory. Then, the predicted results of FE-SEA are compared with the test results and SEA calculation results. The results show that, I) compared with the SEA method, the predicted results of the FE-SEA method are more consistent with the experimental results in 50 Hz~10 kHz; II) the predicted results of the FE-SEA method are basically the same as the experimental results in the middle and high-frequency band (400 Hz~10 KHz); III) the predicted results of FE-SEA method are higher than the measured results in the low-frequency band (50 Hz~400 Hz), the lower the frequency, the greater the deviation. In the acoustic design of stiffened plates, the FE-SEA method should be preferred in order to obtain high-precision broadband sound insulation prediction results. The predicted results of the FE-SEA method can be used directly in the medium-frequency band and high-frequency band, and can only be used as a reference in the low-frequency band, Which should be corrected if it was used. |
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