... calculates fatigue by combining global analysis from a specialized slender structures time-domain solver (OrcaFlex) for the IAC with a local cross-section analysis of IAC (UFLEX2D). It is found that sloshing has little effect on cable fatigue life (high fatigue life found). offshore wind turbines...

... Abstract Offshore wind turbines are dynamic structures that require an accurate estimate of the main eigenfrequencies to avoid resonance and, as a result, increased fatigue damage. This contribution focuses on the first and second mode eigenfrequencies measured over an entire offshore wind farm...

... vertical circular cylinder can be estimated by a simple mathematical model with the linear component. The simple estimation results are compared with both the experimental data and the analytical solutions to validate the accuracy. offshore wind turbines nonlinear loads higher order harmonics...

... Abstract Modelling a proper stochastic inflow wind field for dynamic analysis of an offshore wind turbine (OWT) is affected by turbine specifications and wind characteristics. These considerations and assumptions could potentially have a significant effect on the motions and structural loads...

... response. The results tend to slightly overestimate cable tension, suggesting that this approach yields a conservative estimate of the tension in the mooring cables. sequentially coupled analysis semi-submersible offshore wind turbines Proceedings of the ASME 2023 5th International Offshore Wind...

... Abstract The interaction of sea ice with offshore structures is an important engineering concern in ice-infested areas. This paper presents a procedure to evaluate ice loads acting at the sloping offshore wind turbines in the Estonian territorial waters at the Baltic Sea, where the waters...

... of offshore wind turbines is growing considerably and more preparation and competence are required in association with new projects. In this paper, a review of existing decommissioning methods for offshore bottom-fixed wind turbines is provided first. The removal of wind turbines’ foundation and transition...

... Abstract Single (or mono) suction buckets have been put forward by others as possible offshore wind turbine (OWT) foundations. This paper presents a series of centrifuge model tests conducted in dense sand to investigate their monotonic response for a range of drainage conditions. The results...

... Abstract Monopile-supported offshore wind turbines (OWTs) are dynamically sensitive structures, in which their design is principally based on a dimensioning criterion related to its fundamental frequencies. Therefore, an accurate estimation of the natural frequency is essential to assess...

... Abstract Large diameter monopiles are widely used for the installation of offshore wind turbines in relatively shallow water depth applications. Monopiles are considered as a cost and time-efficient foundation solution, taking advantage of the experience gained from the Oil&Gas industry...

... approach for the determination of the most relevant environmental conditions for extreme calculation is the environmental contour method (ECM). However, some limitations have been detected when this method is used for offshore structures that consider survival strategies e. g. offshore wind turbines (OWT...

... Abstract Although the installation of offshore wind turbines takes place in calm seas, successful mating of wind turbine components can be challenging due to the relative motions between the two mating parts. This work investigates the effect of a passive tuned mass damper on the mating...

... Abstract Fatigue failure is one of the most common damage types of monopiles, which are widely used in offshore wind turbines (OWT). In this paper, a systematic study is performed to investigate the influence of stiffness matrix, sea states and wave directions on fatigue loads of monopiles...

... to energy storage in the offshore wind farming industry and has the objective of proposing an adiabatic compressed air energy (A-CAES) system which would be integrated on a semi-submersible offshore wind turbine (OWT) platform. Calculations in respect to the sizing of the main sub-components of the system...

... Abstract The trend towards larger offshore wind turbines (WTs) implies the need for bigger support structures. These are commonly derived from existing structures through upscaling and subsequent optimization. To reduce the number of design steps, this work proposes a direct optimization...

... offshore wind turbines jacket type substructure system effects stochastic model reliability Deeper waters and harsher environments are the main factors that make the electricity generated by offshore wind turbines (OWTs) expensive due to high costs of the substructure, operation...

... responses of the wind turbine due to the effects of different wind-wave load combinations and soil conditions have been investigated and discussed. Keywords: Offshore Wind Turbines, Dynamic Responses, Random Waves, Current, Pile-Soil Interaction Model 1 INTRODUCTION Due to environmental pollution and energy...