Real-Time Calculation of Noise Radiated by Ship Structure via Machinery Exciting Force Estimation

Ding Ding Lu; Lin He

doi:10.4028/www.scientific.net/AMM.226-228.87

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Vibration Suppression of a Saturation Control System Using Delayed Feedback Control
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 226-228Real-Time Calculation of Noise Radiated by Ship...

Real-Time Calculation of Noise Radiated by Ship Structure via Machinery Exciting Force Estimation

Abstract:

A method which combines the estimation of machinery exciting force and mechano-acoustical transfer function is proposed in this paper to predict real-time radiated noise by ship structure. The measurement methods of mechano-acoustical and mechano-vibrational transfer functions which are used in radiated noise calculation are described. The feasibility and accuracy are verified by an underwater model experiment. Measurement and calculation results are consistent. The average error of the exciting force estimation is about 2dB, and the average error of radiated noise pressure calculation is about 3dB. The accuracy of the radiated noise calculation is directly affected by exciting forces estimation errors, which can be corrected by a correction factor to increase the accuracy of radiated noise calculation effectively.

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Periodical:

Applied Mechanics and Materials (Volumes 226-228)

Pages:

87-91

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.226-228.87

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Online since:

November 2012

Authors:

Ding Ding Lu, Lin He

Keywords:

Exciting Force Estimation, Radiated Noise, Ship Structure, Transfer Function

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