Nonlinear roll damping of ship motions in waves

Xiaorong Wu, Longbin Tao, Yuanlin Li

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Nonlinear roll damping has a profound influence on ship motions and stability in ocean waves. In this study, an experimental investigation is conducted on the nonlinear roll damping of a ship in regular and irregular waves. The random decrement method, previously used in linear roll damping prediction, is extended to nonlinear roll damping estimation in the data process. The accuracy of the nonlinear roll damping obtained by using the random decrement method is found to be dependent on the values of the threshold and segment number.

Original languageEnglish
Pages (from-to)205-211
Number of pages7
JournalJournal of Offshore Mechanics and Arctic Engineering
Volume127
Issue number3
DOIs
Publication statusPublished - Aug 2005

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Ships
Damping
Water waves

Keywords

  • nonlinear roll damping
  • ship motions
  • random decrement method

Cite this

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Nonlinear roll damping of ship motions in waves. / Wu, Xiaorong; Tao, Longbin; Li, Yuanlin.

In: Journal of Offshore Mechanics and Arctic Engineering, Vol. 127, No. 3, 08.2005, p. 205-211.

Research output: Contribution to journalArticle

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AB - Nonlinear roll damping has a profound influence on ship motions and stability in ocean waves. In this study, an experimental investigation is conducted on the nonlinear roll damping of a ship in regular and irregular waves. The random decrement method, previously used in linear roll damping prediction, is extended to nonlinear roll damping estimation in the data process. The accuracy of the nonlinear roll damping obtained by using the random decrement method is found to be dependent on the values of the threshold and segment number.

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