DNV Software is releasing new versions of Framework, Postresp, Stofat and Xtract, including updated features for the ISSC spectrum, the wind fatigue model, unit conversions and export model and result for external presentation.

Design of welded plates and shells
Stress cycle variations, causing reduced life expectancy, occur in all floating structures when subjected to environmental loads. Stofat is the post-processor for fatigue design of welded plates and shells subjected to wave loading using a stochastic approach.

• Table print of worst sea state part of damage fatigue results
• Implemented ISSC wave spectrum
• Long-term stress range calculation for defined probabilities
• Selection of element stress points for the fatigue analysis
• Deassignment of assigned wave spreading functions
• Check of cosine wave spreading for nonsymmetric spreading
• Print of element material data

Excellent visualisation and animation tool
Advanced high-speed graphics makes Xtract the ideal tool for examining your models at any level of detail with or without analysis results. Interactive zooming, rotating, panning and cutting allow you to achieve the best view of your model.

• Export model and results to VTF for external presentation
• Unit conversion
• Principal stress based on membrane stress components

Optimal jacket and frame design
Framework checks the structural integrity of all types of offshore frame structures: jackets, jack-ups, decks, topsides and flare booms. All phases throughout the life cycle of the structures are covered, from initial design to re-qualification.

General part:

• Implemented ISSC wave spectrum Define reference Young's modulus for code check
• Print effective modal mass

Wind fatigue module:

• Assignment of coherence model
• Modifying the section dimensions for use in wind fatigue

Finding your statistical responses
Postresp will perform statistical post-processing of general responses given as transfer functions in the frequency domain or as time series in the time domain.

• Implemented ISSC wave spectrum
• Easier to modify the wave spectrum