CRITICAL WAVE EPISODES FOR ASSESSMENT OF ROLL

Jørgen Juncher Jensen; Preben Terndrup Pedersen

CRITICAL WAVE EPISODES FOR ASSESSMENT OF ROLL

Jørgen Juncher Jensen, Preben Terndrup Pedersen

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

Abstract

The statistical distribution of parametric induced roll angles is estimated using the first order reliability method (FORM), well-known from structural reliability problems. To illustrate the proposed procedure the roll motion is modeled by a simplified non-linear procedure taking into account the time-varying restoring moment and the heave acceleration. The result is the mean outcrossing rate of the roll angle together with corresponding most probable wave scenarios (critical wave episodes), leading to specific maximum roll angles. The procedure is computationally very effective and can thus be applied for determination of ship specific combinations of heading, speed and sea states to be avoided.

Original language	English
Title of host publication	IMDC'06 : The Ninth International Marine Design Conference
Number of pages	735
Volume	Vol. 2
Place of Publication	Ann Arbor, Michigan
Publisher	University of Michigan
Publication date	2006
Pages	399-411
Publication status	Published - 2006
Event	9th International Marine Design Conference - University of Michigan, Ann Arbor, MI, United States Duration: 16 May 2006 → 19 May 2006

Conference

Conference	9th International Marine Design Conference
Location	University of Michigan
Country	United States
City	Ann Arbor, MI
Period	16/05/2006 → 19/05/2006

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Cite this

@inproceedings{61f0321e63a54ce2b43df82952f0ed51,

title = "CRITICAL WAVE EPISODES FOR ASSESSMENT OF ROLL",

abstract = "The statistical distribution of parametric induced roll angles is estimated using the first order reliability method (FORM), well-known from structural reliability problems. To illustrate the proposed procedure the roll motion is modeled by a simplified non-linear procedure taking into account the time-varying restoring moment and the heave acceleration. The result is the mean outcrossing rate of the roll angle together with corresponding most probable wave scenarios (critical wave episodes), leading to specific maximum roll angles. The procedure is computationally very effective and can thus be applied for determination of ship specific combinations of heading, speed and sea states to be avoided.",

keywords = "Parametric roll, FORM, reliability, mean out-crossing rate",

author = "Jensen, {J{\o}rgen Juncher} and Pedersen, {Preben Terndrup}",

year = "2006",

language = "English",

volume = "Vol. 2",

pages = "399--411",

booktitle = "IMDC'06",

publisher = "University of Michigan",

note = "9th International Marine Design Conference, IMDC'06 ; Conference date: 16-05-2006 Through 19-05-2006",

}

TY - GEN

T1 - CRITICAL WAVE EPISODES FOR ASSESSMENT OF ROLL

AU - Jensen, Jørgen Juncher

AU - Pedersen, Preben Terndrup

PY - 2006

Y1 - 2006

N2 - The statistical distribution of parametric induced roll angles is estimated using the first order reliability method (FORM), well-known from structural reliability problems. To illustrate the proposed procedure the roll motion is modeled by a simplified non-linear procedure taking into account the time-varying restoring moment and the heave acceleration. The result is the mean outcrossing rate of the roll angle together with corresponding most probable wave scenarios (critical wave episodes), leading to specific maximum roll angles. The procedure is computationally very effective and can thus be applied for determination of ship specific combinations of heading, speed and sea states to be avoided.

AB - The statistical distribution of parametric induced roll angles is estimated using the first order reliability method (FORM), well-known from structural reliability problems. To illustrate the proposed procedure the roll motion is modeled by a simplified non-linear procedure taking into account the time-varying restoring moment and the heave acceleration. The result is the mean outcrossing rate of the roll angle together with corresponding most probable wave scenarios (critical wave episodes), leading to specific maximum roll angles. The procedure is computationally very effective and can thus be applied for determination of ship specific combinations of heading, speed and sea states to be avoided.

KW - Parametric roll, FORM, reliability, mean out-crossing rate

M3 - Article in proceedings

VL - Vol. 2

SP - 399

EP - 411

BT - IMDC'06

PB - University of Michigan

CY - Ann Arbor, Michigan

T2 - 9th International Marine Design Conference

Y2 - 16 May 2006 through 19 May 2006

ER -