Krzysztof Podgórski
Professor, Head of the Department of Statistics
A model of significant wave height for reliability assessment of a ship
Author
Summary, in English
Significant wave heights are modeled by means of a spatial-temporal random Gaussian field. Its dependent structure can be localized by introduction of time and space dependent parameters in the spectrum. The model has the advantage of having a relatively small number of parameters. These parameters have natural physical interpretation and are statistically fitted to represent variability of observed significant wave height records. The fitted spatial-temporal significant wave field allows for prediction of fatigue accumulation in ship details and of extreme responses encountered. The method is exemplified by analyzing a container ship data relevant for North Atlantic trade and the results show a high agreement with actual on-board measurements. (C) 2013 Elsevier B.V. All rights reserved.
Department/s
- Department of Statistics
Publishing year
2014
Language
English
Pages
109-123
Publication/Series
Journal of Marine Systems
Volume
130
Document type
Journal article
Publisher
Elsevier
Topic
- Probability Theory and Statistics
Keywords
- Significant wave heights
- Hundred years wave
- Fatigue damage
- Narrow
- band approximation
- Rainflow cycles
- Level crossings
Status
Published
ISBN/ISSN/Other
- ISSN: 0924-7963