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Wavelet analysis of loads on a flexible ship model traveling in large-amplitude waves

Du, Shuangxing, Hudson, Dominic A., Price, Geraint W., Temarel, Pandeli, Chen, Ruizhang and Wu, Yousheng (2008) Wavelet analysis of loads on a flexible ship model traveling in large-amplitude waves Journal of Ship Research, 52, (4), pp. 249-262.

Record type: Article


This study describes an application of a Daubechies wavelet function to analyze measured ship model data. The records of a self-propelled, flexible model of the S175 containership moving in waves are analyzed by fast Fourier transform (FFT) and wavelet methods. It is shown that the high-frequency component of the recorded rigid body motions can be omitted without substantially affecting the main features of the data set relating to dynamic loads. The decomposition of the bending moment time history into low- and high-frequency components allows the time of impact occurrence and its amplitude to be easily detected. Such quantities provide important information for the development of generic and realistic transient impact (e.g., slamming, green water) force models for ships traveling in waves.

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More information

Published date: December 2008
Keywords: wavelet, flexible model, motions, wave loads
Organisations: Fluid Structure Interactions Group


Local EPrints ID: 64740
ISSN: 0022-4502
PURE UUID: c3545b5f-f682-4b68-a39a-8fa6c4dfc0b9
ORCID for Dominic A. Hudson: ORCID iD
ORCID for Pandeli Temarel: ORCID iD

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Date deposited: 13 Jan 2009
Last modified: 17 Jul 2017 14:12

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Author: Shuangxing Du
Author: Pandeli Temarel ORCID iD
Author: Ruizhang Chen
Author: Yousheng Wu

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