Results 231 to 240 of about 680 (264)

Performance Of Mooring System Tension Members

Proceedings OCEANS '83, 1983
The subject of mooring lines encompasses a broad spectrum of service requirements (water depths, sea states, tensile loadings, and useful service lives) and a wide variety of candidate mooring members (chain, wire rope, synthetic fiber rope, electromechanical cables, or combinations of these elements). For some systems, a suitable mooring line may have
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Statistics of Mooring-Line Tension in Random Waves

Offshore Technology Conference, 1989
ABSTRACT Dynamics and fatigue analysis have been used quite frequently to evaluate mooring systems for permanent applications. In a conventional frequency domain approach, the distribution of tension amplitudes is obtained from the spectral density function of tension variation assuming, that the amplitudes are ...
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Transient tension measurements during mooring deployments

Oceans '97. MTS/IEEE Conference Proceedings, 2002
Tensions recorded during the deployment of subsurface moorings using the "buoy first" technique demonstrate that transient peaks in tension occur which exceed the tension measured during the steady state descent of the mooring to the bottom. These tension peaks occur just after anchor impact, when the main float overshoots and then oscillates ...
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Mooring Line Tensions Prediction Based on MLP for Soft Yoke Mooring System

Volume 5B: Ocean Engineering
Abstract The soft yoke mooring system is widely used for the floating production storage and offloading (FPSO) in shallow water. However, there were accidents of mooring system being pulled down by the FPSO in field. It is hence necessary to conduct realtime prediction of mooring line tensions.
Ying Li, Qiyuan Zhong, Qiang Gan
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Design of the Tension Mooring System for the Prototype Floating Platform

OCEANS '86, 1986
Japan Marine Science and Technology Center plans TLP sea test using a prototype floating offshore structure. The site is 40 m deep and 3 km offshore on the Japan Sea. In the test the performance of the tension mooring system will be evaluated in the real ocean environments.
K. Kudo, A. Kinoshita, N. Ikoma
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Simulation Calculation of Mooring Tension of the Ship-Based Helicopter

2009 International Forum on Information Technology and Applications, 2009
The helicopter on the ship deck must be moored due to the impact of winds and waves. The forces of the ship-based helicopter are analyzed comprehensively and the expression of inertial acceleration from the movement of ship is derived. The mooring cable is a nonlinear flexible body and is handled by the finite element method instead of the equivalent ...
Qiu Changhua, Song Qiang
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Tension/Torsion Behavior of Deepwater Synthetic Mooring Lines

Offshore Technology Conference, 2006
Abstract Synthetic fiber ropes are now being used in mooring systems off Brazil and in the Gulf of Mexico, and are being considered for deepwater handling applications. Their behavior under tension loads is well understood but induced torsion effects have received less attention. This paper presents tests to measure
P. Davies, P. Bouquet, M. Conte, A. Deuff   +3 more
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Controlling line tension in thruster assisted mooring systems

Proceedings of the 1999 IEEE International Conference on Control Applications (Cat. No.99CH36328), 2003
Addresses the potential for energy reduction obtained by using dynamic line tensioning in thruster assisted position mooring systems. Traditionally, mooring systems have been designed in such a way that thruster assistance has not been necessary under normal environmental conditions.
O.M. Aamo, T.I. Fossen
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Coupled dynamics of tensioned buoyant platforms and mooring tethers

Engineering Structures, 1983
Abstract A mathematical model is presented of the coupled dynamics of a tensioned buoyant surface platform and the lateral dynamics of its taut mooring tethers. A finite element model of the lateral mooring tether dynamics is extended to take account of nonlinear square law fluid damping by a simple global ‘whole tether’ linearization and an ...
M.H. Patel, E.J. Lynch
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Tension In A Taut Line Mooring; Frequency Domain Analysis

Offshore Technology Conference, 1974
ABSTRACT The random response of a taut line mooring excited by sea waves is treated in this paper. For analytical convenience, mooring line tension is divided into a deterministic quasi-static component and a random dynamic component.
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