Offshore wind requires analysis of vast amounts of design load cases in time domain. Compared to fixed offshore wind, floating wind analyses have models that are more complex and that contain more elements. With longer simulations required, more efficient analyses are crucial, both regarding computational speed and data storage, while still providing support for required standards and recommended practices.

DNV is now introducing Sesam Core for fatigue screening and hotspot checks, a scalable solution allowing fast and efficient analysis of offshore wind structures. The initial release of Sesam Core focuses on fatigue analysis of plate/shell structures. It includes both fatigue screening capabilities and fatigue hotspot checks according to DNV-RP-C203. Fatigue screening and hotspot input is set up on the 3D model in the graphical user interface in GeniE. 

The overall workflow is supported through Sesam Wind Manager, allowing the use of coupled analysis output from Bladed/Sima, and the ability to run Wasim, Sestra and Sesam Core for many design load cases, locally or on the cloud, as well as offering automatic data and results management.

Key topics:

• Introduction of new floating wind workflow using Sesam, Bladed and Sima
• Overview of new fatigue analysis workflow for floating wind
• Background of Sesam Core fatigue screening and hotspot checks and the implementation according to DNV-RP-C203
• Setup of fatigue screening and hotspot input via GeniE
• Performing floating wind fatigue analysis for many design load cases using Sesam Wind Manager
• Demonstration of the new workflow
• Other efficiency improvements to the floating wind workflow

Speakers:

• Laurens Alblas – Product Manager for Offshore Wind Structures, DNV
• Jose Cunha – Product Owner, DNV
• Håkon Berg – Principal Engineer, DNV