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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Bibliographic Details
Published in:Probabilistic engineering mechanics 2008-04, Vol.23 (2), p.246-253, Article 246
Main Authors: Leira, Bernt J., Berntsen, Per I.B., Aamo, Ole M.
Format: Article
Language:English
Subjects:
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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Summary: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