期刊
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE
卷 225, 期 C10, 页码 2464-2476出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0954406211414523
关键词
ship dynamics; random seaway; non-linear stochastic processes; parametric excitation
资金
- DFG (Deutsche Forschungsgemeinschaft/German Research Foundation) [Kr 752/29-1]
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 Ito's differential rule and Gaussian closure.
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