DNV SESAM 2020

Proven solution for deepwater floating systems, mooring and SURF analysis

Sesam is a proven solution for deepwater floating systems, mooring and SURF analysis (subsea, umbilical, riser, flowline). The time domain coupled analysis in Sesam provides a comprehensive and accurate analysis for mooring systems. With abundant components, different types of mooring systems, such as spread mooring, single point turret mooring, and Soft Yoke system (which is quite widely used in some shallow water areas) can be properly simulated in an efficient way. With a deeper knowledge of the solvers, thrusters and dynamic positioning (DP) systems can also be simulated and analysed simultaneously with other slender structures.

Mooring and riser analysis and verification

• Proven solution: the mooring and riser systems of many platforms have been designed and/or verified with Sesam
• Mooring and riser analysis methods used in Sesam have been extensively validated
• Unique multi-body capabilities for complex field layouts involving many floaters, e.g. side-by-side moored systems, CALM analysis
• Cross section design and global and local fatigue analysis for subsea umbilicals
• Sesam tools for mooring and riser analysis are known in the offshore oil and gas industry for its efficiency and accuracy

Coupling effects included in mooring and riser analysis

SURF engineers must predict extreme responses and fatigue damage to mooring and riser systems under waves, wind, and current loading conditions. With Sesam you may analyse the slender structures separately or consider the coupling effect between the floater and the mooring and riser systems as the Sesam module DeepC is able to take the coupling effects and other important nonlinearities into consideration.

Analysis of deepwater installations

For deepwater installations, the riser and mooring systems greatly influence the motions of the floater. The floater and slender structures constitute an integrated dynamic system responding to the environmental loading. Because coupling effects are consistently treated, there is no need to make assumptions about the damping level (updated for each time step) which is crucial in a non-linear analysis accounting for slender structure restoring, damping and inertia forces. In other words, Sesam’s software tools will increase the confidence level of riser and mooring analysis.

Offshore wind turbine foundations

Sesam software for offshore wind turbine foundation design and analysis is based on decades of experience in engineering of offshore structures. It provides a tailor-made solution for structural strength analysis of fixed and floating offshore wind support structures, such as wind turbine jackets, floating platforms, and substations. It can be used for conceptual and detailed design of the primary structure, as well as for the design of secondary steel such as boat landings and J-tubes. Besides this, Sesam can perform other lifecycle analyses such as transportation, lifting, and corrosion protection.

Wind turbine jacket design

Sesam for fixed OWT structures can be used for any complexity of structure, from monopiles and tripods to wind turbine jacket structures and substations. The software addresses the industry’s need for a structural strength analysis solution to account for the combined effect of the wind turbine and hydrodynamic loads. Sesam is developed to address the challenges in wind turbine support structure design and is a complete system covering all aspects of fixed OWT installations.

The analysis functionality offered in Sesam’s offshore wind turbine foundation design and analysis software is in accordance with international standards and major rules and standards, such as IEC61400-3, DNVGL-ST-0126, DNVGL-ST-0437 and DNVGL-RP-C203.

Key benefits of Sesam for fixed offshore wind

• Supports design and analysis of offshore wind turbine foundations, from conceptual model to detailed design
• Fatigue (FLS) analysis of damage equivalent loads as well as time domain loads based on IEC61400-3, DNVGL-ST-0126, DNVGL-ST-0437, and DNVGL-RP-C203
• Ultimate strength (ULS) analysis of simplified extreme loads, time domain loads and earthquake loads, based on API, AISC, Eurocode, ISO, and Norsok
• Interfaces for superelement analysis to/from Bladed, BHawC, VTS/Flex5. Wind turbine interface loads from any other 3rd party tool, such as HawC2 and FAST, are supported as well
• Postprocessing of integrated design results for ULS and FLS from Bladed
• Efficient computing using cloud FEA, with Sesam’s cloud computing services, enabling further optimization and cost reduction

Our integrated solution for fixed offshore wind structures is based on the Sesam module GeniE for modelling. The time-domain analyses are executed from the offshore wind analysis software Sesam Wind Manager, including wave and wind turbine loads and postprocessing for FLS and ULS.

Product:Product: DNV SESAM 2020
Version: 2020
Supported Architectures: x64
Language: english
Supported Operating Systems: Windows 7even or newer
Size: 1DVD