Station-keeping of moored vessels by reliability-based optimization

Floating marine structures are frequently kept in position by means of mooring lines in addition to a thruster system. Various types of control schemes for the thruster system are first investigated based on a simplified response model. In particular, the role of structural reliability criteria appl...

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Veröffentlicht in:	Probabilistic engineering mechanics 2008-04, Vol.23 (2), p.246-253, Article 246
Hauptverfasser:	Leira, Bernt J., Berntsen, Per I.B., Aamo, Ole M.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Buildings. Public works Dynamic positioning Exact sciences and technology Fracture mechanics (crack, fatigue, damage...) Fundamental areas of phenomenology (including applications) Hydraulic constructions Mooring lines Offshore structure (platforms, tanks, etc.) Optimization Physics Reliability Solid mechanics Structural and continuum mechanics Thrusters Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
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Beschreibung
Zusammenfassung:	Floating marine structures are frequently kept in position by means of mooring lines in addition to a thruster system. Various types of control schemes for the thruster system are first investigated based on a simplified response model. In particular, the role of structural reliability criteria applied to the mooring system is investigated. Subsequently, a more refined control algorithm based on such reliability criteria is introduced. The performance of this control system is demonstrated by numerical simulations.
ISSN:	0266-8920 1878-4275
DOI:	10.1016/j.probengmech.2007.12.021