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Probabilistic approach to large amplitude ship rolling in random seas
Citation Link: https://doi.org/10.15480/882.1559
Publikationstyp
Journal Article
Date Issued
2011-09-30
Sprache
English
Author(s)
Institut
TORE-DOI
Volume
225
Issue
10
Start Page
2464
End Page
2476
Citation
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 10 (225): 2464-2476 (2011)
Publisher DOI
Scopus ID
For a vessel in open seas, the sudden indirect excitation of roll motions due to waves from the front or rear leads to dangerous situations, sometimes even capsizing. We derive a general non-linear model, which is appropriate for the analysis of parametric excited roll motions in head or following random seas. The irregular waves are modelled in terms of a continuous time autoregressive moving average process. The resulting model of stochastic differential equations is investigated numerically by Local Statistical Linearization. The necessary stochastic moments and their derivatives are computed using Itoˆ’s differential rule and Gaussian closure.
Subjects
ship dynamics
random seaway
non-linear stochastic processes
parametric excitation
DDC Class
620: Ingenieurwissenschaften
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