Implementation of a non‐linear foundation model for soil‐structure interaction analysis of offshore wind turbines in FAST

Krathe, Veronica Liverud; Kaynia, Amir M.

doi:10.1002/we.2031

Cited by 29 publications

(9 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Macro-element models are generally formulated within elasto-plastic theory, and can account for different foundation stiffnesses during unloading and reloading, generating foundation damping. Although the macro-element concept has been extensively used for shallow foundations [26,27,28,29], it has rarely been employed to model monopile response [30,31]. Most of the existing macro-element models for piles have been developed for long piles subjected to earthquake loads [32,33].…”

Section: Types Of Foundation Modelsmentioning

confidence: 99%

Impact of foundation modelling in offshore wind turbines: Comparison between simulations and field data

et al. 2019

View full text Add to dashboard Cite

The design of Offshore Wind Turbines (OWTs) relies on integrated simulation tools capable of predicting the system dynamic characteristics and the coupled loads and responses. Despite all efforts to develop accurate integrated models, these often fail to reproduce the measured natural frequencies, partly due to the modelling of the foundation. Several foundation models and calibration approaches have been proposed and compared with small or large scale field tests, where only the soil and the foundation are included. However, there is a lack of more integral validation where the interaction between the foundation and the structure is taken into account. The paper investigates the impact of the foundation model and calibration approach on the simulated response of a monopile-based OWT installed in the North Sea by comparing simulations and full-scale field data. The OWT structure and the environmental actions are implemented in the aero-servo-hydro-elastic code 3DFloat. Two foundation models and two calibration approaches are evaluated. The results indicate that, with a conceptually correct foundation model and a realistic calibration, it is possible to match the measured natural frequency and predict accurate fatigue loads. More accurate predicted loads will reduce uncertainties in the estimated fatigue lifetime and therefore reduce risk in the design.

show abstract

Section: Types Of Foundation Modelsmentioning

confidence: 99%

Impact of foundation modelling in offshore wind turbines: Comparison between simulations and field data

et al. 2019

View full text Add to dashboard Cite

show abstract

“…However, the scientific software platform is also a necessary condition to ensure the efficiency of wind energy conversion. Software such as MATLAB/Simulink [18], FAST [19][20][21], LABVIEW [22], GH (Garrad Hassan) Bladed [23], and dSPACE [24,25] are widely used as control, simulation or verification tools due to their flexible programming process and easy-to-implement characteristics for complex control in researching wind energy generation. They are restricted to communicating with industrial device directly, which becomes an obstacle in applying the complex and advanced control algorithm of wind energy conversion in the engineering site.…”

Section: Related Work On Wind Energy Conversion System (Wecs)mentioning

confidence: 99%

Application Research of the Parallel System Theory and the Data Engine Approach in Wind Energy Conversion System

Lin

Zheng

Chen³

et al. 2019

Energies

View full text Add to dashboard Cite

The parallel system is a kind of scientific research method based on an artificial system and computational experiments, which can not only reflect the dynamic process of the real system but also optimize its control process in real time. Given the rapid development of wind energy technology, how to shorten the development and deployment cycle and decrease the programming difficulties of wind energy conversion system (WECS) are major issues for improving the utilization of this form of energy. In this paper, the Data Engine is used as a computing environment to form a parallel WECS for studying the engineering application of WECS. With the support of the programming methods of graphical component configurations, visualization technology and dynamic reconfiguration technology, a maximum power point tracking (MPPT) computing experiment of the parallel WECS is carried out. After comparing with MATLAB simulation results, the parallel WECS is verified as having good performance. The Data Engine is an ideal computing unit for modeling and computation of the parallel system and can establish a parallel relationship between the artificial system and the real system so as to achieve the optimal control of WECS.

show abstract

“…The load-displacement curve can be represented sufficiently smoothly by using a high number of coupled springs. A similar model has been recently implemented in the simulation software FAST (Jonkman and Buhl Jr., 2005) by Krathe and Kaynia (2017).…”

Section: Modelmentioning

confidence: 99%

Effect of foundation modelling on the fatigue lifetime of a monopile-based offshore wind turbine

et al. 2017

View full text Add to dashboard Cite

Abstract. Several studies have emphasized the importance of modelling foundation response with representative damping and stiffness characteristics in integrated analyses of offshore wind turbines (OWTs). For the monopile foundation, the industry standard for pile analysis has shown to be inaccurate, and alternative models that simulate foundation behaviour more accurately are needed. As fatigue damage is a critical factor in the design phase, this study investigates how four different soil-foundation models affect the fatigue damage of an OWT with a monopile foundation. This study shows how both stiffness and damping properties have a noticeable effect on the fatigue damage, in particular for idling cases. At mud-line, accumulated fatigue damage varied up to 22 % depending on the foundation model used.

show abstract

Implementation of a non‐linear foundation model for soil‐structure interaction analysis of offshore wind turbines in FAST

Cited by 29 publications

References 16 publications

Impact of foundation modelling in offshore wind turbines: Comparison between simulations and field data

Impact of foundation modelling in offshore wind turbines: Comparison between simulations and field data

Application Research of the Parallel System Theory and the Data Engine Approach in Wind Energy Conversion System

Effect of foundation modelling on the fatigue lifetime of a monopile-based offshore wind turbine

Contact Info

Product

Resources

About