GeniE Wind for offshore structures - software for ultimate strength and fatigue analysis of offshore wind turbine structures
DNV’s Sesam software has been extended with a tailor-made solution for structural strength analysis of offshore wind turbine structures addressing the industry’s need to account for the combined effect of wind and hydrodynamic loads. The analysis functionality offered is in accordance with the DNV Offshore Standard DNV-OS-J101 Design of Offshore Wind Turbines
The Sesam package, building upon our 40+ years experience as a leading tool for engineering of offshore structures, is applicable for analyses of wind turbine structures for any depths, from shallow water mono piles to tripods, jacket structures as well as concrete gravity based structures for larger depths.
With GeniE Wind, we offer an interface for easy import of time domain wind forces from commercial aero-elastic codes. The imported wind forces may be combined with the hydrodynamic forces from waves and current generated in Sesam and merged to produce a single time series for structural analysis. Furthermore, fatigue analysis using the rain-flow counting methodology (RFC) from multiple time domain analysis, representing different short term environmental (sea and wind) states is offered.
The Sesam package also offers analysis capabilities for frequency domain analysis and deterministic analysis for ultimate strength. Code checks supported includes API, Norsok, Eurocode, ISO and DS449.
GeniE is used for modelling of the substructure, including the wind turbine tower. Beams are used when modelling the slender parts of the structure. GeniE can also accurately model the complex transition structure between the wind tower and the supporting structure to determine the strength of this part.
We also offer accurate simulations of the non-linear pile soil interaction for deterministic analysis as well as defining the data for the linearised stiffness matrix to be used for time domain simulations.
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