Results 221 to 230 of about 446 (252)

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
openaire   +1 more source

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.
openaire   +1 more source

Prediction of Mooring Line Tensions for Hurricane Conditions in the Gulf of Mexico

Volume 4A: Structures, Safety and Reliability, 2014
A probabilistic metocean model for hurricane conditions is briefly described. The model is based on site-specific, hindcast data and defines the time variation of the metocean conditions during the realisation of a hurricane at the site. The annual extreme value distribution of mooring line tension for a large, semi-submersible, mobile drilling unit is
Jan Mathisen, Torfinn Hørte
openaire   +1 more source

Calibration of Weather Dependent Mooring Line Tension Safety Factors

Offshore Technology Conference
Abstract The regulations in Norway require the mooring design check to be done for a 100-year storm. This requirement is also valid for short-term drilling operation. This typically leads to mooring systems with long mooring lines, poor operability for drilling operations and significant thruster usage to keep position.
K. Ejdfors, K. Nilsen, T. Hørte
openaire   +1 more source

Dynamic tension in risers and mooring lines: an algebraic approximation for harmonic excitation

Applied Ocean Research, 2001
A riser or mooring line, when excited dynamically at its upper end, resists the imposed displacement by increasing its tension. Viscous damping in the lateral motion is known to be crucial and the resulting problem is thus intrinsically nonlinear. In this paper, an algebraic expression for the dynamic tension, formerly obtained [Polar Engineers, ISOPE'-
J.A.P. Aranha, M.O. Pinto
openaire   +1 more source

Lightweight Materials for Mooring Lines of Deepwater Tension Leg Platforms

Marine Technology and SNAME News, 1984
The design of a mooring system for tension leg platforms (TLPs) becomes more complicated as water depth increases. The use of steel mooring lines requires complicated tensioning, handling, and flotation systems. This paper discusses the basic design requirements for the TLP mooring system and identifies several advanced fiber-reinforced lightweight ...
openaire   +1 more source

NUMERICAL SIMULATION OF MOORING LINE TENSION AND MOTION OF MOORED SHIPS UNDER WIND AND CURRENT CONDITIONS

International Journal of Fluid Mechanics Research
Under the combined effects of environmental loads such as wind and flow, the motion response of inland river vessels in port increases, directly affecting the mooring safety of the vessels and even leading to major accidents such as cable breakage, collision damage, and capsize.
Yuhan Miao, Niancen Cai, Jilun Miao, Yiming Liu   +3 more
openaire   +1 more source

Investigations on the mooring safety considering the coupling effect of the mooring line snap tension and anchor out-of-plane loading

Applied Ocean Research, 2023
Shengjie Rui, Zhen Guo, Kanmin Shen
exaly  

A new approach to predict dynamic mooring tension using LSTM neural network based on responses of floating structure

Ocean Engineering, 2022
Binbin Li, Dongsheng Qiao, Guoqiang Tang   +2 more
exaly  

Standardization in building an ANN-based mooring line top tension prediction system

International Journal of Naval Architecture and Ocean Engineering, 2022
Seungjae Lee, Jaeyong Lee, Daesoo Lee
exaly