Journal of Offshore Mechanics and Arctic Engineering: Recent submissions
Now showing items 881-900 of 2185
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The Model Test of Deep Water S Lay Stinger Using Dynamical Substructure Method
(The American Society of Mechanical Engineers (ASME), 2015)Deep water pipeline installations by Slay present many challenges, especially in the overbend section. The Slay requires a long curved and stiff stinger to support the pipeline weight. The interaction between the overbend ... -
Retracted: “Wave Energy Resource Analysis for Use in Wave Energy Conversion†[ASME Journal of Offshore Mechanics and Arctic Engineering, 137(1), p. 011903]
(The American Society of Mechanical Engineers (ASME), 2015)This paper is retracted from the Journal of Offshore Mechanics and Arctic Engineering. -
A Two Dimensional Hydroelastoplasticity Method of a Container Ship in Extreme Waves
(The American Society of Mechanical Engineers (ASME), 2015)Extreme waves have led to many accidents and losses of ships at sea. In this paper, a twodimensional (2D) hydroelastoplasticity method is proposed as a means of studying the nonlinear dynamic response of a container ship ... -
Conventional and Linear Statistical Moments Applied in Extreme Value Analysis of Non Gaussian Response of Jack Ups
(The American Society of Mechanical Engineers (ASME), 2015)This work investigates numerically two different methods of moments applied to Hermite derived probability distribution model and variations of Weibull distribution fitted to the shortterm time series peaks sample of ... -
Assessment of a Jack Up Offshore Launching Through Model Tests and Field Measurements
(The American Society of Mechanical Engineers (ASME), 2015)Recently, an experimental campaign was carried out to assess the feasibility of the launching operation of two jackup units using a barge as the launching platform. This experimental study was divided in four stages. In ... -
A Moored Arctic Floater in First Year Sea Ice Ridges
(The American Society of Mechanical Engineers (ASME), 2015)Firstyear sea ice ridges are a major concern for structures operating in the Arctic offshore and will in many cases give the design mooring load. In this paper, the response of a moored conical floater, somewhat similar ... -
Nonlinear Wave Loads on a Submerged Deck by the Green–Naghdi Equations
(The American Society of Mechanical Engineers (ASME), 2015)We present a comparative study of the twodimensional linear and nonlinear vertical and horizontal wave forces and overturning moment due to the unsteady flow of an inviscid, incompressible fluid over a fully submerged ... -
Effect of Pile–Soil Interaction on Structural Dynamics of Large Moment Magnitude Scale Offshore Wind Turbines in Shallow Water Western Gulf of Mexico
(The American Society of Mechanical Engineers (ASME), 2015)The effect of pile–soil interaction on structural dynamics is investigated for a large offshore wind turbine (OWT) in the hurricaneprone Western Gulf of Mexico (GOM) shallow water. The OWT has a rotor with three 100meter ... -
Nonlinear Pitch Decay Motion of a Floating Offshore Wind Turbine Structure
(The American Society of Mechanical Engineers (ASME), 2015)Model tests were conducted on three generic floating wind turbine systems in 2011 and reported in a series of papers at the 31st Ocean, Offshore, and Arctic Engineering Conference in 2012. These tests were conducted at the ... -
Estimation of Constraint Factor on the Relationship Between J Integral and CTOD for Offshore Structural Steel Weldments
(The American Society of Mechanical Engineers (ASME), 2015)Offshore structures are exposed to severe operating conditions because energy resource development has recently extended toward deeper seabed and lower temperature regions. Hence, fracture toughness evaluation for very ... -
Underwater Friction Stud Welding Optimal Parameter Estimation: Engineering Robust Design Based Approach
(The American Society of Mechanical Engineers (ASME), 2015)Underwater friction stud welding (FRSW) without a shroud around the stud requires controlling welding parameters to achieve optimal joint strength. A hydraulic FRSW unit has been designed and fabricated to perform FRSW ... -
Modeling the Energy Saving Regimes of Curvilinear Bore Hole Drivage
(The American Society of Mechanical Engineers (ASME), 2015)This paper deals with simulating the energysaving regimes of drilling deep curvilinear boreholes with prescribed geometrical imperfections of their axial lines. On the basis of the theory of curvilinear flexible elastic ... -
Frequency Versus Time Domain Fatigue Analysis of a Semisubmersible Wind Turbine Tower
(The American Society of Mechanical Engineers (ASME), 2015)The current paper deals with a study of a semisubmersible wind turbine (WT), where shortterm tower base bending moments and tower fatigue damage were estimated by a frequency domain (FD) method. Both a rigid structure ... -
Nonlinear Dynamic Response and Structural Evaluation of Container Ship in Large Freak Waves
(The American Society of Mechanical Engineers (ASME), 2015)Many ship accidents and casualties are caused by large freak ocean waves. Traditionally, the strength of ships against freak waves is assessed by means of ultimate strength evaluation, assuming quasistatic conditions, but ... -
Airgap Statistics for a Tension Leg Platform
(The American Society of Mechanical Engineers (ASME), 2015)The paper discusses a method for estimating extreme value statistics of the airgap for floating offshore platforms subjected to random seas. It is an adaptation of a recently developed method, which is based on the mean ... -
Effects of a Shielding Skirt for Prevention of Sea Lice on the Flow Past Stocked Salmon Fish Cages
(The American Society of Mechanical Engineers (ASME), 2015)The effect of a shielding skirt, a tarpaulin mounted from the surface down to 5 m depth around a net cage, on the flow pattern at a commercially stocked salmon cage was investigated. Dye was used as a tracer for water ... -
Propagation of Gravity Waves Past Multiple Bottom Standing Barriers
(The American Society of Mechanical Engineers (ASME), 2015)The interaction of oblique surface gravity waves with multiple bottomstanding flexible porous breakwaters is analyzed based on the linearized theory of water waves. Using the method of eigenfunction expansion and the least ... -
Wind Wave Misalignment Effects on Floating Wind Turbines: Motions and Tower Load Effects
(The American Society of Mechanical Engineers (ASME), 2014)The dynamic responses of a spar, tension leg platform (TLP), and two semisubmersible floating wind turbines (FWTs) in selected misaligned wind and wave conditions are investigated using numerical simulation with an ... -
Two Dimensional Model for Pore Pressure Accumulations in the Vicinity of a Buried Pipeline
(The American Society of Mechanical Engineers (ASME), 2014)In this paper, we presented an integrated numerical model for the waveinduced residual liquefaction around a buried offshore pipeline. In the present model, unlike previous investigations, two new features were added in ... -
Nonlinear Model Predictive Control Applied to a Generic Ocean Wave Energy Extractor1
(The American Society of Mechanical Engineers (ASME), 2014)This paper evaluates the theoretical application of nonlinear model predictive control (NMPC) to a modelscale point absorber for wave energy conversion. The NMPC strategy will be evaluated against a passive system, which ...