NDLI: Hull-Mooring Coupled Dynamic Analysis of Two Side-by-Side Operating Vessels

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Mirzaei, Mahdi Shafieefar, Mehdi Moharrami, Mohammad Reza
Copyright Year	2010
Abstract	This paper contains the results of mooring analyses of two side-by-side operating crane barges in the installation procedure of a jacket type platform in an oil-gas field in the Persian Gulf. Since the vessels are proposed to operate next to a fixed structure, making sure about their displacements and a convenient clearance between them and the jacket is a highly important aspect of the design process. In essence, the analyses consist of setting an appropriate configuration and positioning of the vessels relative to each other, considering a reasonable gap between vessels and the jacket, connecting the vessels together, and studding the behavior of the moored system when it is subjected to a set of environments. In particular, an equilibrium configuration is found when the system is subjected to the mean force of the environment which consists of waves, wind gusts and currents. Then the dynamics of the system about the mean position is investigated. In order to study the influence of a dynamic mooring analysis, two cases are compared; one considering weight and buoyancy as the only forces acting on the lines and carrying out a quasi-static mooring analysis, and the other taking into account the hydrodynamic forces from the mooring lines. An accurate and efficient finite element program for the coupled analysis of the hull-mooring system is used and two types of modeling the connected vessels are compared; one using joints with restraints for all relative motions but in relative roll, and the other using slings and fenders. In all cases, the results of time domain analyses consisting of mooring line loads and motion responses of the vessels are presented in time histories and the statistics are studied.
Sponsorship	Ocean, Offshore and Arctic Engineering Division
Starting Page	639
Ending Page	644
Page Count	6
File Format	PDF
ISBN	9780791849095
DOI	10.1115/OMAE2010-21066
e-ISBN	9780791838730
Volume Number	29th International Conference on Ocean, Offshore and Arctic Engineering: Volume 1
Conference Proceedings	ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering
Language	English
Publisher Date	2010-06-06
Publisher Place	Shanghai, China
Access Restriction	Subscribed
Subject Keyword	Wind Dynamic analysis Mooring Vessels Equilibrium (physics) Buoyancy Clearances (engineering) Statistics as topic Fluid-dynamic forces Modeling Time-domain analysis Waves Stress Hull Crane barges Design Dynamics (mechanics) Weight (mass) Finite element analysis Currents
Content Type	Text
Resource Type	Article

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