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Estimating a non-Gaussian probability density of the rolling motion in irregular beam seas

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Abstract

A methodology for predicting the probability density function of roll motion for irregular beam seas was developed in previous research. That work introduced a non-Gaussian probability density function (PDF), which shows a good agreement with Monte Carlo simulation (MCS) results in comparison with linear theory results. However, if the nonlinear damping coefficient in a system is large, the PDF delivers estimations that do not match the MCS results. The procedure reported herein improves the prediction accuracy using a non-Gaussian PDF that takes a nonlinear damping term into account.

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Acknowledgements

This work was supported by a Grant-in-Aid for Scientific Research from the Japan Society for Promotion of Science (JSPS KAKENHI Grant Number 15H02327). The authors would like to thank Enago (http://http://www.enago.jp) for English language review.

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Correspondence to Atsuo Maki.

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Maki, A., Sakai, M. & Umeda, N. Estimating a non-Gaussian probability density of the rolling motion in irregular beam seas. J Mar Sci Technol 24, 1071–1077 (2019). https://doi.org/10.1007/s00773-018-0606-7

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  • DOI: https://doi.org/10.1007/s00773-018-0606-7

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