Customers have played an important role in the current release of Nauticus Early Design, based both on pre-studies and on implementation projects.

The most significant update in the new release of Nauticus Early Design is the strong interface from CAD-CAE to both 2D and 3D strength analysis.

The release meets important goals; from one 3D CAD model it is possible to create the drawing and carry out rule check, FE and hydrodynamic analysis.

The 2D two-way interface with rule check has also been updated. The rule check is carried out according to CSR. The user can choose to let the system update the properties in the 3D CAD model according to the rules if this is required.

Interface CAD-CAE
The interface with 3D strength analysis is based on .xml transfer. An .xml file is created in Nauticus Early Design and transformed. The transformed structures pass some automatic and manual idealisation for use in GeniE. In order to choose which part of the model to transfer to CAE, the user can select the global models, regions, local models or individual selected structures. Nauticus Early Design will transfer the geometry, attributes and names. There are built-in rules for idealisation, and more rules will be applied at a later stage as we gain use experience. The final .xml file is imported into GeniE. In order to create a usable mesh, the GeniE engineer has to use his FE experience to further simplify the model. The work involved depends on the CAD model and will vary from project to project. From the GeniE concept model the engineers can run HydroD for hydro - dynamic or hydrostatic analysis.

Nauticus Early Design 3D model...	... and the same model showed in Genie.

The model transferred to GeniE will contain the geometry, plate and beam names, and all relevant properties such as:

• Plate thickness
• Beam section properties
• Beam eccentricities
• Material

The FE engineers can run global or local analysis. The analysis result is postprocessed with tools within Nauticus Hull FEA. These tools cover strength, buckling and fatigue result processing. Future releases of Nauticus Early Design and Nauticus Hull will have common tools for ship data and compartments.

New features

• Based on Molded Forms 2007.2 version
• Rule Check from Nauticus Hull June 2007
• Nauticus Early Design to GeniE
• Brix Rule System for Early Design
• Drawing rule description

Improvements

• Strength Assessment User Environment
  – Added Export to CAD.xml (for transformation to FEA)
  – Added Verify command (checking WT plates with holes)
  – Section Scantlings import can read profile changes
• Early Design Drawings – miscellaneous improvements
• Brix Explorer – major GUI redesign