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With the new release of Sesam software for structural engineering and analysis, DNV GL is showing the results of ramped-up focus on cutting costs and boosting efficiency for customers. One of the key targets is reduction of tedious work.
Eccentricity modelling software
One of the most newsworthy features targets an area where engineers have been doing repetitive and frustratingly tedious work: eccentricity modelling, where fictitious elements are introduced to counter modelling errors. Previously, when changes have been made to eccentric members and segmented members, each beam in the model has had to be recalculated manually. A typical offshore jacket structure contains hundreds of beams – in such a scenario, this creates unnecessary and costly manual work.
Software for hydrostatic, hydrodynamic and structural analysis
Sesam is the market leading software for hydrostatic, hydrodynamic and strength analyses of ships and floating offshore structures. With Sesam we help naval architects and engineers efficiently produce high quality hydrodynamic analyses with automatic load transfer to give an accurate prediction of resulting deformations and stresses. It is also possible to do intact and damaged stability analysis in accordance with common Codes of Practice.
Sesam is used in design and analysis of all types of floating structures, including barges, ships and semi-submersibles, TLPs, FPSOs and spar buoys.
Radiation/diffraction software combined with FEM (finite element method)
- One common concept model for hydrostatic, hydrodynamic, global or local strength analysis
- Intact and damaged stability calculations and Code checks
- Hydrodynamic motion analysis in frequency domain
- Inclusion of mooring and risers in calculation of motion characteristics. This can be done in a simplified way in HydroD. Comprehensive inclusion requires DeepC or Sima.
- Calculation of short and long-term response statistics
- Automatic transfer of wave pressure, line loads on beams and inertia forces to the structural finite element model
- Static and dynamic structural analysis in frequency and time domains
- Ultimate Limit State (ULS) Code checks for beams and stiffened plate/shell
- Stochastic fatigue analysis of plates and shells
- Fast, efficient remodelling and strength analysis of local sub-models for refined fatigue analysis
Full range of hydrostatic and hydrodynamic analyses
From intact and damaged stability calculations (HydroD module), to linear (Wadam) or non-linear (Wasim) hydrodynamic analysis and post-processing (Postresp), Sesam provides a comprehensive set of software modules to meet the needs of naval architects and engineers.