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RISIntegrity Management of Offshore Structures With Emphasis on Design for Structural Damage Tolerance
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Based on relevant accident experiences with oil and gas platforms, structural integrity management of offshore structures is briefly outlined, including adequate design criteria, fabrication and operational procedures, as ...
Global Responses of Struck Ships in Collision With Emphasis on Hydrodynamic Effects
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Hydrodynamic effects in ship collisions are usually considered by increased inertia force in the form of the equivalent added mass. It is necessary to reasonably estimate the equivalent added mass to calculate energy ...
Serviceability Limit State Assessment of Semi-Submersible Floating Wind Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The design of a floating wind turbine (FWT) should satisfy the serviceability limit state (SLS) requirement for an efficient and safe operation throughout the entire work life. The SLS requirements are introduced by the ...
Frequency Versus Time Domain Fatigue Analysis of a Semisubmersible Wind Turbine Tower
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: 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 ...
A Comparative Study of Shutdown Procedures on the Dynamic Responses of Wind Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: 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 ...
Application of the Contour Line Method for Estimating Extreme Responses in the Mooring Lines of a Two Body Floating Wave Energy Converter
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The ultimate limit state (ULS) is one of the design criteria used in the oil and gas industry in mooring system design for floating platforms. The 100 year level response in the mooring line should be applied for the ULS ...
Joint Distribution of Environmental Condition at Five European Offshore Sites for Design of Combined Wind and Wave Energy Devices
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The design of wind turbines requires information about joint data for wind and wave conditions. Moreover, combining offshore wind and wave energy facilities is a potential way to reduce the cost of offshore wind farms. To ...
Response Analysis of a Nonstationary Lowering Operation for an Offshore Wind Turbine Monopile Substructure
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This study addresses numerical modeling and timedomain simulations of the lowering operation for installation of an offshore wind turbine monopile (MP) with a diameter of 5.7 m and examines the nonstationary dynamic ...
Benchmarking of a Computational Fluid Dynamics-Based Numerical Wave Tank for Studying Wave Load Effects on Fixed and Floating Offshore Structures
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A computational fluid dynamics (CFD) based numerical wave tank (NWT) is developed and verified to study wave load effects on fixed and free floating offshore structures. The model is based on solving Navier–Stokes equations ...
Methodology for Assessment of the Allowable Sea States During Installation of an Offshore Wind Turbine Transition Piece Structure Onto a Monopile Foundation
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this paper, a methodology suitable for assessing the allowable sea states for installation of a transition piece (TP) onto a monopile (MP) foundation with focus on the docking operation is proposed. The TP installation ...