An important basic feature of Hull Detailed Design is the panel concept.
A panel is a functional structure ranging in size from a small, bracket-like
structure, to the level of webs, girders, decks and bulkheads. A panel,
with its plate parts, profiles, brackets, and so on, is the basic modelling
unit in Hull Detailed Design, whereas most other systems work on the
lower level of a piece part. In the object-oriented Hull Detailed Design
application, the associated piece parts are generated automatically from
• A new project starts with the hull form defined in the AVEVA Initial
Design application, or with a form from an external source.
• Hull Detailed Design is delivered with an extensive range of
customisable intelligent shipbuilding standards for brackets,
stiffeners, notches, cutouts and holes. These standards automatically
adapt their geometry to the context in which they are used, in
accordance with shipbuilding rules. For instance, the geometry on
plate edges will depend on the required weld preparation type, the
thickness of plating and the angle between the joined parts. The actual
geometry will be automatically calculated, based on these conditions.
Standards are customised and new standards added in accordance with
user requirements. User-defined end cuts of stiffeners, for example,
can be defined in the system catalogue.
• The Hull Detailed Design model is stored with definition data,
topological information and shipyard rules for the specific type of
design. The design intent, defined during modelling, is used to make
the hull model as independent of fixed geometry as possible. The
design intent for each design object is stored, rather than the simple
'numeric' geometry of the design. Hull Detailed Design automatically
uses design intent information to carry out the lofting work and
determine the exact coordinate information that defines the shape
and the characteristics of the parts. Changes in one part will
automatically be reflected in changed connected parts.
Curved Hull Modelling
• Various curved hull objects are interactively generated in any of the
hull surfaces. Extensive interactive facilities enable the user to define
any curved member with respect to basic geometry locations or relative
to existing curves. The curved plates are automatically developed
according to the workshop methods that are used at the shipyard.
Holes in curved plates can be defined, developed and used for marking
• Early material estimates for shell profiles can be obtained using the
longitudinal tracing facility. Material quantities for the shell plates are
obtained from the shell plate development functions.
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• A curved panel generation facility is used to build the complete shell
panels of the vessel, including the shell plates and the detailed
descriptions of longitudinals and or transversals, for production
• A shell expansion view can be generated automatically. This view has a
structure similar to all other model views and may thus be used for
modelling and queries. Shell
expansion views normally show
half the ship (either port side or
starboard side) developed from
the centre line. However, they
may also be developed across the
centre line, be restricted to
certain parts of the shell, be
developed from arbitrary curves
or planes, and so on. Holes in
the shell profiles and in the
internal structure against the
shell can be shown symbolically
in a shell expansion view.
• Body Plan views are also created
automatically and can, in the
same way as the shell expansion
views, be used for modelling and
queries as in any other hull view.
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Planar Hull Modelling
• The complete inner steel structure of a vessel is modelled as plane
panels, including plates, stiffeners, brackets and flanges, creating a
complete and detailed model to be used for the retrieval of
manufacturing and assembly information.
• Knuckled and swedged panels can be defined, and their production
information is also available.
• The extensive shipbuilding standards, that adapt their geometry
automatically, are important tools for high efficiency in model work.
• Panels can be moved and duplicated to speed up the design process.
The panels will automatically adapt their shapes to the new
surroundings. The new parts can be automatically numbered using
customised rules for comparison and number series.
• The associativity of the model defined during modelling means that
model parts are connected to the edges of adjacent parts, so the model
can easily adapt to a change of the hull form or the position of a deck.
This feature means that a design can be developed quickly, because the
application automatically uses the references to connected parts to
carry out the lofting work and determine the exact coordinate
information which defines the shape of the parts. A change in one part
will automatically be reflected in changes to other connected parts.
• A powerful feature is the possibility to 'model in a drawing'. This
means that all kinds of panel drawings derived from the model
maintain a link to the panels in the model. Changes in the panel can
therefore be carried out via the drawing. This feature ensures
consistency between the model and the related drawings, and reduces
the time for documenting the design.
• Drawings can be made in two different styles, either with a symbolic
representation of stiffeners, seams, notches and drain holes, or with
full three-dimensional representation. The symbolic-style drawings are
traditional for classification and working drawings, whereas the full
representation can be used for the various assembly and erection
drawings. The drawing functions provide the following features:
- General 2D drafting.
- Model picture generation.
- Automatic generation of a shell expansion and body plan views.
- Access to, and viewing of, outfitting objects such as equipment,
pipes and cables.
- Associative labels and dimensions.
- Hidden line removal.
- Section details.
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All the necessary manufacturing and assembly documents can be created
by the system.
• Automatic Parts Generation. The plates and profiles to be
manufactured (including all small parts like clips and collars) are
created entirely automatically from the hull panels. All types of
adjustments to part shapes, for example, shrinkage for welding or
edge preparation, are considered during this process. Metal touching
marking and alignment marking are available and can be customised to
yard practice. Each piece part is marked to contain all the necessary
information for a simplified assembly process.
• Shrinkage Facility. This facility is used to compensate for the shrinkage
caused by welding in the assembly process. The calculations are based
on a shrinkage table that contains the amount of shrinkage actually
measured in the workshops. From an analysis of the welds, and based
on this shrinkage table, the shrinkage facility will automatically
evaluate the amount of shrinkage and directions in which it should be
applied. Plates and profiles are both considered.
• Part Checking Function. This displays the automatically created part
with all labels, marking, excess material and bevel information.
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• All necessary production information can be automatically or semiautomatically
extracted from the Hull model:
- 2- or 3-axis plate cutting.
- Templates for the rolling and bending of the shell plates.
- Plate jigs and pin jigs for curved assemblies (there is an additional
feature for interactively changing the automatically created jig
- Manufacturing lists, sketches and robot information for
longitudinal and transverse frames and webs including information
for inverse line bending.
- Lists of weights and centres of gravity.
- Manufacturing lists and sketches for stiffeners.
- Material lists.
- Part lists.
- Early estimates for material and welds.
• The plate nesting function is used to nest plate parts on raw plates and
produce NC/CNC data for cutting and marking together with a
workshop sketch. Quick nesting of plates using automatic selection of
parts from the parts menu is available, and there are facilities for the
handling of surplus plate material. Parts can be clustered and the
nesting of smaller parts in openings is supported.
• Profile nesting. Profiles generated as planar stiffeners, flanges or
pillars, or as curved longitudinals and transversals, can be
automatically nested on a set of raw profiles defined by the shipyard.
Any steel quality exchange rules (substitution rules) set up by the
shipyard are considered during the selection of suitable raw material
for the profile nesting. The nesting algorithm will minimise the scrap
percentage, taking into consideration the geometry of the end cuts,
any defined bevel and different orientations of symmetrical profiles.
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Hull Detailed Design Options
AVEVA Hull Panel Line Control
The Panel Line Control module is used to nest assembly parts onto large
raw plates and produce NC information for blasting, marking, burning
and text labelling. The option supports the following activities:
• Automatic creation of the large assembly parts and the individual piece
• Automatic nesting of one or many assembly parts on the large raw
• Nesting of other none panel line plate parts on the raw plate to
• Parallel blasting, marking and burning (including bevel cutting).
• Text labelling.
• Raster marking.
• Automatic mounting of profiles.
• NC data and sketches.
AVEVA Hull Profile Cutting Interface
This option enables the transfer of nested profiles, or profiles, to profilecutting
robots or other systems for profile manufacturing.
AVEVA Hull Plate Cutting Interface
This option enables the transfer of plate parts to external systems for
AVEVA Hull Genauigkeit – GSD Marking Triangles
For any shipyard using automatic marking equipment, this option
enables increased accuracy without extra design hours. Hull Genauigkeit
is an option to improve accuracy by making the alignments of parts in the
assembly process easier. This is achieved with marking triangles and lines
that are created automatically in the automatic parts generation, with an
option to add more triangles manually. The concept here is that the
component itself represents the workshop drawing.
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• Accuracy Control. Even if the primary use is in the assembly of parts,
marking triangles may also be used for accuracy control.
• The primary use of marking triangles is in the assembly of parts,
however they may also be used for accuracy control.
• Alignment of Parts. Compared to traditional alignment lines, the
marking triangles have the advantage that they 'lock' the parts to be
connected in three directions, longitudinal, transversal and vertical.
The marking triangles are generated in both of the involved parts in
butt and fillet joints, and in plates as well as profiles. The position of
the triangles will, for example, consider expected bevel gaps in butt
welding, and the shrinkage compensation in such joints. Hull
Genauigkeit is supported for both the planar hull and the curved hull
in the shell of the ship.
AVEVA Hull Dotori – Variable Bevelling
Hull Detailed Design has an advanced feature for the set-up and control
of bevel standards, both for bevel types with fixed angles and where the
bevel angles vary. Support for the latter category is identified as the Hull
Dotori option. With Hull Dotori, production parts will be generated with a
high degree of accuracy.
The Hull Dotori calculations support the definition and use of bevelling
for fillet welding whenever there is to be a dependence on the
connection angle between the elements involved and/or their material
thickness. Hull Dotori can be used to calculate bevels in many situations:
• At plate edges.
• In the lugs of cutouts.
• Along profile traces (shell and planar).
• In profile ends.
• At bracket edges.
• In holes.
• In flange ends.
• In clips.
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The Hull Dotori option automatically generates information to control
the angle of the cutting heads according to the variety of rules specified
by the customer. The actual geometry of the part is adjusted to fit with
the calculated information.
AVEVA Robot Interface
This option enables the transfer of the hull model in a volume format,
suitable for processing by an offline programming system for welding
AVEVA Robot Interface 2
This option is a variant of the Robot Interface. It exports part geometry
and welding data based on the assembly structure and the results from
Hull Weld Planning.