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Analysis of wave slam induced hull vibrations using continuous wavelet transforms
journal contribution
posted on 2023-05-17, 14:56 authored by Amin, W, Michael DavisMichael Davis, Giles Thomas, Damien HollowayDamien HollowayLarge high-speed wave-piercing catamarans are subject to continuous wave induced hull vibrations during their lifetime of operation. In severe sea conditions, the vessel experiences high load impacts, known as slamming, accompanied by high frequency structural response giving rise to fatigue effects. Classical vibration analysis techniques such as the Fourier Transform fail to identify the exact response frequencies of slamming events due to the transformation to the frequency domain and the loss of temporal information about these transient events which is of great importance to fatigue analysis. The work presented in this paper introduces, describes, applies and recommends the continuous wavelet transform as an effective means to investigate the wave induced hull vibrations in both the time and frequency domains simultaneously.
History
Publication title
Ocean EngineeringVolume
58Pagination
154-166ISSN
0029-8018Department/School
Australian Maritime CollegePublisher
Pergamon-Elsevier Science LtdPlace of publication
The Boulevard, Langford Lane, Kidlington, Oxford, England, Ox5 1GbRights statement
Copyright 2012 Elsevier Ltd.Repository Status
- Restricted