Journal of Offshore Mechanics and Arctic Engineering: Recent submissions
Now showing items 601-620 of 2185
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Investigation on the Effects of Freeze-Thaw Action on the Pore Water Pressure Variations of Soils
(The American Society of Mechanical Engineers (ASME), 2018)Freeze-thaw action changes soil microstructure and thus has a great influence on physical and mechanical properties of soils, which is closely correlated to pore water pressure (PWP). Herein, the PWPs of sandy soil and ... -
Improved In-Line Vortex-Induced Vibrations Prediction for Combined In-Line and Cross-Flow Vortex-Induced Vibrations Responses
(The American Society of Mechanical Engineers (ASME), 2018)Slender marine structures are subjected to ocean currents, which can cause vortex-induced vibrations (VIV). Accumulated damage due to VIV can shorten the fatigue life of marine structures, so it needs to be considered in ... -
Probabilistic Seismic Collapse Analysis of Jacket Offshore Platforms
(The American Society of Mechanical Engineers (ASME), 2018)This paper analyses and evaluates the variability of seismic demand and capacity of a case study jacket offshore platform considering different sources of uncertainty. The aleatoric uncertainty due to variability of ... -
Analysis of Mode and Dynamic Stability for Wind Turbine Rotating Blades
(The American Society of Mechanical Engineers (ASME), 2018)For large-scale offshore wind turbine rotating blades (NREL 5MW), the theoretical model of vibration due to fluid-structure interaction (FSI) is established, and the basic equations for modal analysis are given. Based on ... -
Prototype Reynolds Number Vortex-Induced Vibration Tests on a Full-Scale Rigid Riser
(The American Society of Mechanical Engineers (ASME), 2018)Slender offshore structures in deep water subjected to currents may experience vortex-induced vibrations (VIV), which can cause significant fatigue damage. Extensive experimental researches have been conducted to study the ... -
Drilling Riser Model Test for Software Verification
(The American Society of Mechanical Engineers (ASME), 2018)Marine drilling riser is subject to complicated environmental loads which include top motions due to mobile offshore drilling unit (MODU), wave loads, and current loads. Cyclic dynamic loads will cause severe fatigue ... -
Experimental and Numerical Studies of the Excess Pore Pressure Field Surrounding an Advancing Spudcan Footing
(The American Society of Mechanical Engineers (ASME), 2018)The rapid jack-in process of spudcan footing tends to generate substantial build-up of excess pore pressure below the spudcan underside. An intimate knowledge of the excess pore pressure concentration is thus of significance ... -
Elastoplastic Simulation of Stress–Strain Response Considering the Cyclic Degradation of Saturated Clay
(The American Society of Mechanical Engineers (ASME), 2018)A modified anisotropic bounding surface model is developed to simulate the stress–strain response of saturated clay under cyclic loading. In this study, kinematic hardening variables are introduced into the equation for a ... -
A Simple Effective Stress Approach for Modeling Rate-Dependent Strength of Soft Clay
(The American Society of Mechanical Engineers (ASME), 2018)This paper proposes a simple effective stress method for modeling the strain rate-dependent strength behavior that is experienced by many fine-grained soils in offshore events when subjected to rapid, large strain, undrained ... -
Natural Frequency Analysis of a Spar-Type Offshore Wind Turbine Tower With End Mass Components
(The American Society of Mechanical Engineers (ASME), 2018)Different from the fixed-based wind turbines, the floating type wind turbines are regarded as under a free–free end operating condition. The tower structure of a floating offshore wind turbine is an integrated part connecting ... -
Flow-Induced Vibration and Hydrokinetic Power Conversion of Two Staggered Rough Cylinders for 2.5 × 104 < Re < 1.2 × 105
(The American Society of Mechanical Engineers (ASME), 2018) -
Multidisciplinary Optimization Design for the Section Layout of Umbilicals Based on Intelligent Algorithm
(The American Society of Mechanical Engineers (ASME), 2018)Umbilicals, which link top floaters and subsea devices, provide control functions through electrical cables and hydraulic remote transmission. These cables are considered the “lifeline” of subsea production systems for ... -
Motion Responses of a Catenary-Taut-Hybrid Moored Single Module of a Semisubmersible Very Large Floating Structure in Multisloped Seabed
(The American Society of Mechanical Engineers (ASME), 2018)Motion responses of moored very large floating structures (VLFSs) in coastal regions are remarkably influenced by shallow water, seabed topography, and mooring system, which were given particular focus in this paper. A ... -
Dynamic Simulation and Control of an Active Roll Reduction System Using Free-Flooding Tanks With Vacuum Pumps
(The American Society of Mechanical Engineers (ASME), 2018)Ship roll motion is critical for offshore operations due to its lack of damping mechanism. This paper demonstrates a dynamic simulation scheme of an active roll reduction system using free-flooding tanks controlled by ... -
A Three-Dimensional Model for Ice Rubble Pile-Ice Sheet-Conical Structure Interaction at the Piers of Confederation Bridge, Canada
(The American Society of Mechanical Engineers (ASME), 2018)Offshore structures constructed in waters where ice cover is prevalent for several months a year are subjected to ice loading. Some of these structures are conical or sloped-faced in shape, where flexural failure becomes ... -
Structural Dynamic Analysis of a Tidal Current Turbine Using Geometrically Exact Beam Theory
(The American Society of Mechanical Engineers (ASME), 2018)This paper presents a numerical study of the dynamic performance of a vertical axis tidal current turbine. First, we introduce the geometrically exact beam theory along with its numerical implementation the geometric exact ... -
Particle Image Velocimetry Experiment and Computational Fluid Dynamics Simulation of Flow Around Rigid Cylinder
(The American Society of Mechanical Engineers (ASME), 2018)This work focuses on the study of the flow around a rigid cylinder with both particle image velocimetry (PIV) experiment and computational fluid dynamics (CFD) simulation. PIV measurements of the flow field downstream of ... -
Development of a Computational Fluid Dynamics Model to Simulate Three-Dimensional Gap Resonance Driven by Surface Waves
(The American Society of Mechanical Engineers (ASME), 2018)This paper expounds the process of successfully establishing a computational fluid dynamics (CFD) model to accurately reproduce experimental results of three-dimensional (3D) gap resonance between two fixed ship-shaped ... -
Characterization of a Wind Generation System for Use in Offshore Wind Turbine Development
(The American Society of Mechanical Engineers (ASME), 2018)Environmental conditions created by winds blowing oblique to the direction of the waves are necessary to conduct some survivability tests of offshore wind turbines. However, some facilities lack the capability to generate ... -
Comparison of Two Models for Prediction of Seismic Streamer State Using the Ensemble Kalman Filter
(The American Society of Mechanical Engineers (ASME), 2018)Towed marine seismic streamers are extensively utilized for petroleum exploration. With the increasing demand for efficiency, leading to longer and more densely spaced streamers, as well as four-dimensional (4D) surveys ...