An investigation on the stability in waves of a cylindrical offshore platform

Julio Cesar F. Polo; Claudio Alexis Rodriguez Castillo; Marcelo Neves

An investigation on the stability in waves of a cylindrical offshore platform

Julio Cesar F. Polo, Claudio Alexis Rodriguez Castillo, Marcelo Neves

Naval Architecture, Ocean And Marine Engineering

Research output: Contribution to conference › Paper › peer-review

Abstract

The paper shows results from a comprehensive experimental investigation on a mono-column in regular and irregular waves. Focus is centered on improving the understanding of the occurrence of resonant motions associated with Mathieu instabilities for cylindrical floating platforms. The paper advances to show
peculiar differences encountered in responses when compared to the better known and well understood phenomenon of parametric rolling of ships. Experimental results with the mono-column showed both roll and pitch parametric amplifications. It is concluded that for cylindrical bodies with the same natural period in the roll and pitch modes, there may be a diversity of patterns of responses and coupling between the modes involved depending on the amount of energy imposed on the system. It is also concluded that the
instabilities observed in the mono-column experiments were very much influenced by the mooring system.

Original language	English
Number of pages	12
Publication status	Published - 29 Apr 2013
Event	Ten-Years LabOceano Celebration Workshop - Rio de Janeiro, Brazil Duration: 29 Apr 2013 → 30 Apr 2013

Workshop

Workshop	Ten-Years LabOceano Celebration Workshop
Country/Territory	Brazil
City	Rio de Janeiro
Period	29/04/13 → 30/04/13

Keywords

wave stability
offshore platforms

Cite this

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title = "An investigation on the stability in waves of a cylindrical offshore platform",

abstract = "The paper shows results from a comprehensive experimental investigation on a mono-column in regular and irregular waves. Focus is centered on improving the understanding of the occurrence of resonant motions associated with Mathieu instabilities for cylindrical floating platforms. The paper advances to show peculiar differences encountered in responses when compared to the better known and well understood phenomenon of parametric rolling of ships. Experimental results with the mono-column showed both roll and pitch parametric amplifications. It is concluded that for cylindrical bodies with the same natural period in the roll and pitch modes, there may be a diversity of patterns of responses and coupling between the modes involved depending on the amount of energy imposed on the system. It is also concluded that the instabilities observed in the mono-column experiments were very much influenced by the mooring system.",

keywords = "wave stability, offshore platforms",

author = "Polo, \{Julio Cesar F.\} and \{Rodriguez Castillo\}, \{Claudio Alexis\} and Marcelo Neves",

year = "2013",

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language = "English",

note = "Ten-Years LabOceano Celebration Workshop ; Conference date: 29-04-2013 Through 30-04-2013",

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TY - CONF

T1 - An investigation on the stability in waves of a cylindrical offshore platform

AU - Polo, Julio Cesar F.

AU - Rodriguez Castillo, Claudio Alexis

AU - Neves, Marcelo

PY - 2013/4/29

Y1 - 2013/4/29

N2 - The paper shows results from a comprehensive experimental investigation on a mono-column in regular and irregular waves. Focus is centered on improving the understanding of the occurrence of resonant motions associated with Mathieu instabilities for cylindrical floating platforms. The paper advances to show peculiar differences encountered in responses when compared to the better known and well understood phenomenon of parametric rolling of ships. Experimental results with the mono-column showed both roll and pitch parametric amplifications. It is concluded that for cylindrical bodies with the same natural period in the roll and pitch modes, there may be a diversity of patterns of responses and coupling between the modes involved depending on the amount of energy imposed on the system. It is also concluded that the instabilities observed in the mono-column experiments were very much influenced by the mooring system.

AB - The paper shows results from a comprehensive experimental investigation on a mono-column in regular and irregular waves. Focus is centered on improving the understanding of the occurrence of resonant motions associated with Mathieu instabilities for cylindrical floating platforms. The paper advances to show peculiar differences encountered in responses when compared to the better known and well understood phenomenon of parametric rolling of ships. Experimental results with the mono-column showed both roll and pitch parametric amplifications. It is concluded that for cylindrical bodies with the same natural period in the roll and pitch modes, there may be a diversity of patterns of responses and coupling between the modes involved depending on the amount of energy imposed on the system. It is also concluded that the instabilities observed in the mono-column experiments were very much influenced by the mooring system.

KW - wave stability

KW - offshore platforms

M3 - Paper

T2 - Ten-Years LabOceano Celebration Workshop

Y2 - 29 April 2013 through 30 April 2013

ER -

An investigation on the stability in waves of a cylindrical offshore platform

Abstract

Workshop

Keywords

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Cite this