Journal of Offshore Mechanics and Arctic Engineering: Recent submissions
Now showing items 861-880 of 2185
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Experimental and Numerical Investigation of Dynamic Positioning in Level Ice
(The American Society of Mechanical Engineers (ASME), 2015)Offshore operations in icecovered waters are drawing considerable interest from both the public and private sectors. Such operations may require vessels to keep position during various activities, such as lifting, installation, ... -
Modeling of Response Amplitude Operator for Coupled Sway, Roll and Yaw Motions of a Floating Body in Sinusoidal Waves Using Frequency Based Analysis
(The American Society of Mechanical Engineers (ASME), 2015)The paper investigates the characteristics of response amplitude operators (RAO) or transfer function of a floating body in frequency domain for coupled sway, roll and yaw motions in sinusoidal waves. The floating body is ... -
Metallurgical Design and Performance of High Frequency Electric Resistance Welded Linepipe With High Quality Weld Seam Suitable for Extra Low Temperature Services
(The American Society of Mechanical Engineers (ASME), 2015)To clarify the effect of inclusions on the Charpy impact properties, the 2 mm Vnotched Charpy properties of X60–X80grades steel were numerically simulated using the finite element method code abaqus. The yield strength ... -
Effect of Operating Pressure and Dent Depth on Burst Strength of NPS30 Linepipe With Dent–Crack Defect
(The American Society of Mechanical Engineers (ASME), 2015)Buried linepipe can be exposed to various external interferences and corrosive environment and as a result, damage in the form of dent or corrosion or crack or gouge or combination of any of these damages can form in the ... -
Toward a Probabilistic Approach to Determine Nominal Values of Tank Sloshing Loads in Structural Design of Liquefied Natural Gas FPSOs
(The American Society of Mechanical Engineers (ASME), 2015)The aim of this study is to develop a new probabilistic approach to determine nominal values for tank sloshing loads in structural design of LNG FPSO (liquefied natural gas, floating production, storage, and offloading ... -
Forced Flexural Gravity Wave Motion in Two Layer Fluid
(The American Society of Mechanical Engineers (ASME), 2015)Generation of flexural gravity waves in a twolayer fluid due to the forced motion of a vertical rigid wavemaker is studied in both finite and infinite water depths. The twodimensional (2D) fluid domain having an interface ... -
System Identification of Nonlinear Vessel Steering
(The American Society of Mechanical Engineers (ASME), 2015)In this paper, the stochastic parameters describing a nonlinear ocean vessel steering model are identified, resorting to an extended Kalman filter (EKF). The proposed method is applied to a secondorder modified Nomoto model ... -
Irregular Nonlinear Wave Simulation and Associated Loads on Offshore Wind Turbines
(The American Society of Mechanical Engineers (ASME), 2015)The accuracy of predicted loads on offshore wind turbines depends on the mathematical models employed to describe the combined action of the wind and waves. Using a global simulation framework that employs a domaindecomposition ... -
Parametric Identification of Abkowitz Model for Ship Maneuvering Motion by Using Partial Least Squares Regression
(The American Society of Mechanical Engineers (ASME), 2015)Partial least squares (PLS) regression is used for identifying the hydrodynamic derivatives in the Abkowitz model for ship maneuvering motion. To identify the dynamic characteristics in ship maneuvering motion, the derivatives ... -
Closed Analytical Expressions for Stress Distributions in Two Layer Cylinders and Their Application to Offshore Lined and Clad Pipes
(The American Society of Mechanical Engineers (ASME), 2015)Closedform analytical expressions are derived for the displacement field and corresponding stress state in twolayer cylinders subjected to pressure and thermal loading. Solutions are developed both for cylinders that are ... -
Calculation of Horizontal Sectional Loads and Torsional Moment
(The American Society of Mechanical Engineers (ASME), 2015)Horizontal sectional loads (horizontal shear force and horizontal bending moment) and torsional moment are more difficult to predict with potential flow methods than vertical loads, especially in sternquartering waves. ... -
Experimental Evaluation of the Ultimate Bending Moment of a Slender Thin Walled Box Girder
(The American Society of Mechanical Engineers (ASME), 2015)The results of a four points bending test on a box girder are presented. The experiment is part of series of tests with similar configuration but with different thickness and span between frames. The present work refers ... -
Statistics of Extreme Wind Speeds and Wave Heights by the Bivariate ACER Method
(The American Society of Mechanical Engineers (ASME), 2015)In the reliability engineering and design of offshore structures, probabilistic approaches are frequently adopted. They require the estimation of extreme quantiles of oceanographic data based on the statistical information. ... -
Bending Behavior of Reinforced Thermoplastic Pipe
(The American Society of Mechanical Engineers (ASME), 2015)Reinforced thermoplastic pipe (RTP) is a composite thermoplastic pipe, which is increasingly being used in oil and gas industry. In practical applications, RTPs inevitably experience bending during reeling process and ... -
Hydrodynamic Simulation and Optimization of an Oil Skimmer
(The American Society of Mechanical Engineers (ASME), 2015)Oil spills can cause severe environmental damage. In situ burning or chemical dispersant methods can be used in many situations; however, these methods can be highly toxic and fail in slightly rough seas. Oil recovery ... -
A Continuous Desingularized Source Distribution Method Describing Wave–Body Interactions of a Large Amplitude Oscillatory Body
(The American Society of Mechanical Engineers (ASME), 2015)A Rankine source method with a continuous desingularized free surface source panel distribution is developed to solve numerically a wave–body interaction problem with nonlinear boundary conditions. A body undergoes forced ... -
A Meshless Boundary Element Method for Simulating Slamming in Context of Generalized Wagner
(The American Society of Mechanical Engineers (ASME), 2015)A boundary element method (BEM) designed for solving the symmetric generalized Wagner formulation is presented. The flow field is parameterized with analytical functions and can describe the kinematics at any free surface ... -
Estimation of Storm Peak and Intrastorm Directional–Seasonal Design Conditions in the North Sea
(The American Society of Mechanical Engineers (ASME), 2015)Specification of realistic environmental design conditions for marine structures is of fundamental importance to their reliability over time. Design conditions for extreme waves and storm severities are typically estimated ... -
Rankine Source Method for Ship–Ship Interaction Problems
(The American Society of Mechanical Engineers (ASME), 2015)A Rankine source method is extended and applied to ship–ship interaction problems. The method covers the nonlinear steady flow and linear seakeeping in the frequency domain. The nonlinear steady flow solution accounts ... -
A Comparative Study of Shutdown Procedures on the Dynamic Responses of Wind Turbines
(The American Society of Mechanical Engineers (ASME), 2015)The shutdown of wind turbines may induce excessive loads on the structures and is an important factor to consider in their design. For pitchregulated turbines, shutdown calls for blade pitching, and oneor twoblade shutdown ...