An energy analysis of parametric roll for application to the second generation intact stability criteria

An energy analysis of parametric roll for application to the second generation intact stability... Parametric roll is an amplification of the roll motion due to the periodic variation of the restoring moment in waves. This phenomenon is mostly observed in head and following seas and is the cause of several accidents occurred on container vessels during recent decades. One of the second generation intact stability criteria, currently under finalization and validation by the IMO, requires computing the maximum roll angle with regard to parametric roll. Both proposed methods are relatively complex to implement and require tools that naval architects are not accustomed to. In this paper, we propose an easier alternative method providing the amplitude of parametric roll for any loading condition at any speed, based on energy considerations and assuming a linear GZ. The implementation of this easy method in the corresponding second generation intact stability criterion provides almost the same value of KGmax than the on-degree-of-freedom time simulation proposed by the future regulation. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Marine Science and Technology Springer Journals

An energy analysis of parametric roll for application to the second generation intact stability criteria

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Publisher
Springer Japan
Copyright
Copyright © 2017 by JASNAOE
Subject
Engineering; Automotive Engineering; Engineering Fluid Dynamics; Engineering Design; Offshore Engineering; Mechanical Engineering
ISSN
0948-4280
eISSN
1437-8213
D.O.I.
10.1007/s00773-017-0444-z
Publisher site
See Article on Publisher Site

Abstract

Parametric roll is an amplification of the roll motion due to the periodic variation of the restoring moment in waves. This phenomenon is mostly observed in head and following seas and is the cause of several accidents occurred on container vessels during recent decades. One of the second generation intact stability criteria, currently under finalization and validation by the IMO, requires computing the maximum roll angle with regard to parametric roll. Both proposed methods are relatively complex to implement and require tools that naval architects are not accustomed to. In this paper, we propose an easier alternative method providing the amplitude of parametric roll for any loading condition at any speed, based on energy considerations and assuming a linear GZ. The implementation of this easy method in the corresponding second generation intact stability criterion provides almost the same value of KGmax than the on-degree-of-freedom time simulation proposed by the future regulation.

Journal

Journal of Marine Science and TechnologySpringer Journals

Published: Mar 21, 2017

References

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