Abstract
A multi-objective optimized noise reduction design strategy for aircraft cabins was formulated and a mathematical model of multi-objective structural optimization was established based on the dynamic response and acoustic radiation equations of the structure. Later, the finite element and statistical energy analysis of the simplified hybrid simulation model of the aircraft cabin section was conducted to identify noise sources in aircraft cabin under different excitation conditions. A multistage optimization task was set up using the collaborative optimization algorithm, and an overall optimization process was designed for multi-objective optimization calculation and analysis. Results were compared with non-optimized results to verify the validity of the proposed optimization algorithm. Calculated results demonstrated that the proposed multi-objective optimized design can reduce sound pressure in aircraft cabin effectively, with an average reduction of 3–4 dB in the intermediate-frequency band.






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Acknowledgements
This work was financially supported by the National Natural Science Foundation of China (Grant No. 11404205) and the Fundamental Research Funds for the Central Universities of Ministry of Education of China (Grant No. GK201703015).
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Gao, J., Qiang, N. Multi-objective Optimized Design for Intermediate-Frequency Noise Reduction in Aircraft Cabins. Wireless Pers Commun 102, 3737–3747 (2018). https://doi.org/10.1007/s11277-018-5405-2
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DOI: https://doi.org/10.1007/s11277-018-5405-2