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RISClosed-Form Solutions for Vibrations of Nearly Vertical Strings and Beams by Means of Asymptotic Methods
Publisher: American Society of Civil Engineers
Abstract: Top tensioned strings and beams are often used in civil and marine applications. Typically these members have constant cross sections, and a pronounced, usually linear, tension variation, due to the effects of gravity. In ...
Preliminary Design of Bottom-Fixed Lattice Offshore Wind Turbine Towers in the Fatigue Limit State by the Frequency Domain Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The fatigue assessment of support structures is one of the most significant challenges in the design of offshore wind turbines (OWT). Fatigue analysis can be conducted in either the time-domain ...
Lattice Towers for Bottom-Fixed Offshore Wind Turbines in the Ultimate Limit State: Variation of Some Geometric Parameters
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Optimal solutions for offshore wind turbines (OWTs) are expected to vary from those of their onshore counterparts because of the harsh offshore climate, and differences in loadings, transportation, ...
Individual Pitch Control of Horizontal Axis Wind Turbines
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An individual pitch controller (IPC) based on the multivariable Linear Quadratic Gaussian (LQG) concept is presented to reduce loads in megawatt-size wind turbines. Most turbines currently installed ...
Experimental Investigations of the Efficiency of Round-Sectioned Helical Strakes in Suppressing Vortex Induced Vibrations
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Vortex induced vibrations (VIVs) may cause a large amount of damage to deep water risers. Helical strakes are used as a mitigating measure to suppress these vibrations. The purpose of this ...