Main characteristics:  
  • Shell and deck plates expansion.
  • Expansion of any type of plate without any limitation as for its shape or numer of sides.
  • Finite element expansion method. Maximum accuracy.
  • Geometrical and interactive definition of seams and butts.
  • Ship compartment.
  • The system can obtain offset tables for the preparation of templates for the shell plates forming.
  • Structural elements positioning.

  • Three-dimensional structure management.
Production process
The seams and butts that shape the shell plates are defined in a totally graphic and interactive way by defining points in the hull surface. The system takes this points to use splines (mathematical moulding-batten). Those lines can be modified at any time editing the points that define them.
Once the plates have been expanded you can obtain offset tables for the preparation of templates for shell plates forming. The positioning of the plate to be formed can be defined by the user in a graphic an interactive way moving and rotating the plate in the screen.
Structure definition
The structural girders such as floors, webs, bottom-girders, side stringers, breast hooks, shell and decks longitudinal girders, lengths, etc. can also be defined by this module.

This definition is done in two parts. In the first part, girder geometry is defined: its position and shape. In the second part the associated information is defined: thicknesses, kind and dimensions of profiles, etc.

Easy to use
The definition of all these elements ( from decks to seams, butts and girders) is always done in a graphic and interactive way, being able to be edited and modified in any moment. As reference, you can see that this way is very similar to AutoCAD and another CAD systems when define and edit polylines. Once defined, you can obtain offset tables of these elements, to calculate distances, etc.  

The working of this module has been made easy to the maximum and you can see the vessel representated in its three orthograpic views (profile, plan and body) and 3D view using filters for the displaying of the different forms (hull and decks) and layers (seams, girders) and making use of the three mouse buttons, etc. All this things in a userfriendly and well known enviroment as Windows.

  • DFshell permits to define the vessel compartment generation. To do that, you can define the different decks (flat, circular, trapezoidal), bulkheads (longitudinal, transversal, oblique), double bottom, superestructures, etc.
  • DFshell permits to calculate offset tables for the construction of prefabrication beds or for the positioning of jigs. To make this, the user can situate the chosen panel in the appropriatest position in a graphic way, moving and rotating it in the screen.
Shell expansion of the aftbody of a 15.000 DWT chemical tanker. For each expanded plate the system can show the dimensions of the plate, the maximun deformations,...

Cintranaval-Defcar S.L.
Lauroeta Etorbidea, 4 48180 Loiu, Bizkaia (Spain)
Tlf: +34 902158081
Fax: +34 944638552