Volume 34 Issue 3
May  2014
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Zhang Guojun, Yan Yunju, Li Pengbo. Vibro-acoustic Response Analysis of Aircraft Structure Based on Hybrid FE-SEA and Experimental Verification[J]. Journal of Space Science, 2014, 34(3): 327-331. doi: 10.11728/cjss2014.03.327
Citation: Zhang Guojun, Yan Yunju, Li Pengbo. Vibro-acoustic Response Analysis of Aircraft Structure Based on Hybrid FE-SEA and Experimental Verification[J]. Journal of Space Science, 2014, 34(3): 327-331. doi: 10.11728/cjss2014.03.327

Vibro-acoustic Response Analysis of Aircraft Structure Based on Hybrid FE-SEA and Experimental Verification

doi: 10.11728/cjss2014.03.327
  • Received Date: 2013-06-20
  • Rev Recd Date: 2014-01-10
  • Publish Date: 2014-05-15
  • For structural vibro-acoustic coupling methods, a general accepted view is that the Finite Element (FE) method is suitable in low-frequency band, and Statistical Energy Analysis (SEA) methods is more appropriate in high-frequency band. However, there are no suitable methods for the medium-frequency band. Moreover, in different engineering fields, the division of high- medium-and low-frequency band is also different. The vibro-acoustic coupling dynamics of hybrid FE-SEA model of the hypersonic aircraft X-43A is established based on FE-SEA theory. In order to study the performance and property of vibration caused by aerodynamic noise, the external noise field is assumed as known. The noise transmission and structure coupling vibration are analyzed by hybrid FE-SEA method. Structural vibration response and the noise field response of the aircraft model are obtained. Finally, reliability of the theory and numerical calculation is verified through noise experiments.

     

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