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Portrait of Krzysztof Podgórski. Photo.

Krzysztof Podgórski

Professor, Head of the Department of Statistics

Portrait of Krzysztof Podgórski. Photo.

A model of significant wave height for reliability assessment of a ship

Author

  • Krzysztof Podgorski
  • Igor Rychlik

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