FINLAND
a hole in the hull, bulkhead or deck, the request has been made to the hull designer, who is responsible for hull strength, and this request has been either accepted or rejected by the hull designer. In a globally distributed project things get more
complicated. The hull design and piping and layout design can be done at separate satellite design sites of the project. In version 5.2 a new object type has been implemented in the Plant Modeller - the 'hole request' object. The request objects carry the information of the new hole to be made until the Hull module sends the hull geometry with the true hole implemented. Having a separate object type for these tasks makes it possible to manage hole requests in a separate process, by using a query or by using visualise, hide etc. functions. The processing speed of the visualisation of
shaded views in the Plant Modeller and the visualisation speed in the eBrowser have been increased remarkably. Now bigger 3D models can be handled by computers with mainstream graphical cards. Nupas-Cadmatic has also taken up the challenge
of producing a 3D Basic Design tool which is fast in use but the results of which can be utilised in the detailed design phase. A built-in two-way integration of the Plant Modeller and the software of the Napa has been introduced. Hull geometry and other information from both Napa Steel and Design Napa can be imported and geometry and product data can be exported to Napa applications. The Design Modules function, which was
introduced earlier, allows importing of a system or a selected part of a system from an existing 3D model to a new project. There is also an interactive phase when importing, where the product information can be renewed according to the requirements of the new project. For example, pipeline or valve coding, specifications, materials, wall thickness etc. can differ in a new project in such a way that this 'information mapping' feature is important. New capabilities of eBrowser and eXchanger
have been developed for even more efficient remote reviewing and project filing. The visualisation processing has been remarkably improved allowing for faster handling and bigger more detailed models. AutoCad 3D models can be directly imported and exported using the Nupas- Cadmatic eXchanger conversion module. The eXchanger now also supports AutoCAD 2007.
Hull engineering improvements The user interface in version 5.2 of Nupas- Cadmatic's Hull Engineering has also received a major face lift. All of the menu bar options and the toolbar options are logically reorganised. A ‘recently used’ function is now provided, and the toolbars are now floatable, but they can be docked where preferred in the graphic window. The 2D drafting functions have been redesigned
and re-implemented for more flexible use. Interactivity has also been sought by using dynamic inputs, as witnessed by a new undo/redo functionality and from the possibility of switching between functions by using function keys. 3D Hull construction data can now be exported
in a format that can be used as input for Finite Element Method (FEM) software. The export data can be collected from several blocks based on geometric and logistical selection criteria. The user has the potential to add ‘policy’ information
THE NAVAL ARCHITECT FEBRUARY 2007
Version 5.2, Nupas-Cadmatic also introduces the 3D Hull Library, a tool to store any kind of structural part, or group of parts, in a library.
to 3D Hull construction items which are general or specific rules that control the contents of the output data. The 3D Hull construction data is modified by
the export process in a way which is suitable for FEM calculations. For example plates, brackets etc. no longer have a geometrical thickness in the FEM model but the thickness information is added as an attribute together with the material type information. Small holes, cut-outs or other small objects are left out of the FEM model. If necessary, the thickness attributes of base
objects like plates, brackets etc. are adapted to counteract the effect of these neglected holes, cut-outs etc. Profiles close together with parallel directions are represented by one object with some adapted properties. Apart from general export format, export to the IGES format makes wide use of the data possible. In version 5.2, bracket functionalities have
also been improved. Again, plate relations have been extended. If a curve does not fit between two relations, it is now possible to have it added. Plates can be related to face plates and flanges on plates in plan view, and bent profiles and pillars can be created. Version 5.2, Nupas-Cadmatic also introduces
the 3D Hull Library, a tool to store any kind of structural part, or group of parts, in a library. The stored structural parts can be retrieved and positioned freely within the current ship model or another ship model, increasing efficiency in the pre-design phase but also bringing the potential to add small parts in to the normal construction work phase. It can be used for both small and large constructions, from foundations to complete deck arrangements. The part data retrieved from the 3D Hull Library includes the part information such as cutting data, logistic data, weights etc., directly available for production.
The user interface in version 5.2 of Nupas- Cadmatic's Hull Engineering has also received a major face lift.
Engineroom design made with Nupas- Cadmatic's Basic Designer module.
eBrowser engineroom model basic design made by Basic Designer.
In addition to supporting the hull shape data
formats of NAPA, Fairway and the import of 3D DXF to the standard hull shape database, version 5.2 of Nupas-Cadmatic's 3D Hull Engineering also supports the import of several common CAD formats like IGES. A new import tool converts surfaces and curves from IGES or Rhino 3DM to the hull database. Nupas-Cadmatic has won over many
new users recently among shipyards and engineering offices. These include shipyards like Japanese Sasebo Heavy Industries Co, Kyokuyo Shipyard Corporation, and Shitanoe Shipbuilding Co, Fukuoka Shipbuilding Co now also uses the design software in its own design departments after its good experience from an engineroom designed by the yard together with NYK Engineering's branch office in Sasebo. Recent clients in Turkey include the Yardimci Shipyard, and Proteksan- Turquoise, a shipyard producing mega yachts and, in Vietnam, main shipbuilding research centre Vinashin Shipbuilding, Science & Technology Institute (SSTI) uses the software in its own design projects. The first Vietnamese shipyard to implement the Nupas-Cadmatic software was Nam Trieu Shipbuilding Industry Corporation (NASICO), part of Vinashin Corp. The yard has recently successfully built the first 53,000dwt Diamond 53 Bulk Carrier, the biggest vessel launched so far in Vietnam. The engineroom of the ship was designed using Nupas-Cadmatic software. The Consulting & Design of Transport Industry Co (CDTI) is another big ship design office in Vietnam which also uses Nupas-Cadmatic as well as the Bach Dang Shipyard in the Haiphong area.
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