Analytical estimation of the noise due to a rotating shaft

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题名:	Analytical estimation of the noise due to a rotating shaft
作者:	黃以玫;Huang, Y.M.;Chen, T.C.;Shieh, P.S.
贡献者:	工學院機械工程學系
关键词:	A rotating shaft;Acoustics;Aeroacoustic noise;Aeroacoustics, atmospheric sound;Exact sciences and technology;Ffowcs-Williams and Hawkings theory;Fundamental areas of phenomenology (including applications);Lighthill analogy;Physics;Structural acoustics and vibration
日期:	2014-01-01
上传时间:	2026-04-23 14:45:45 (UTC+8)
出版者:	Kidlington: Elsevier Ltd
摘要:	摘要： This article focuses on noise prediction of a rotating shaft. The governing equations of motion for a Rayleigh beam, rotating about its longitudinal axis and subjected to a harmonic force, are first established using the Hamilton’s principle and Galerkin’s method. Then, the vibrating displacement of the shaft is solved for. The aeroacoustic theory, introduced by Lighthill and improved by Ffowcs Williams and Hawkings, is used for calculating the developed noise of the shaft in motion. The dominant effect to the noise is the surface pressure on the moving shaft. Parametric studies also presented. From the numerical data, the noise value, from a rotating shaft, corresponding to the higher significant resonance is greater than that related to the first resonant mode. This phenomenon has not been found in the frequency response of the shaft’s displacement. 出版者： Kidlington: Elsevier Ltd 出版日期： 2014-02-01 出處： Applied acoustics, 2014-02, Vol.76, p.187-196 版權： 2013 Elsevier Ltd 版權： 2015 INIST-CNRS 識別號： ISSN: 0003-682X 識別號： EISSN: 1872-910X 識別號： DOI: 10.1016/j.apacoust.2013.08.004 識別號： CODEN: AACOBL
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