Analysis of roll damping model scale data
Paper i proceeding, 2020

Semi-empirical methods such as the Ikeda’s method or simplified Ikeda’s method are widely used to predict roll damping for practical purposes. Recent work has shown that the applicability and accuracy of Ikeda’s method for modern hull forms are somewhat uncertain which is very unfortunate, especially for analysis of parametric roll. This paper investigates the accuracy of the simplified Ikeda’s method for modern ships, by comparison with roll damping coefficients obtained from a large number of roll decay model tests. Possible ways to improve the accuracy of semiempirical predictions of roll damping for modern ships is also investigated in this paper.

Ship motions

Simplified Ikeda’s method

Ikeda’s method

Roll decay

Parameter identification technique

Roll damping

Författare

Martin Alexandersson

SSPA Sweden AB

Chalmers, Mekanik och maritima vetenskaper

Wengang Mao

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Jonas Ringsberg

Chalmers, Mekanik och maritima vetenskaper, Marin teknik

Proceedings of The 5th International Conference on Ships and Offshore Structures (ICSOS 2020)

62-75 ICSOS2020-05

The 5th International Conference on Ships and Offshore Structures (ICSOS 2020)
Glasgow, United Kingdom,

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2020-11-01