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3D rapid conceptual design

Discussion in 'Yacht Designers Discussion' started by tartanski, Nov 5, 2004.

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  1. jmr

    jmr New Member

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    Lars,

    I asked myself, why all big and small boats looks the same and some of them have ugly proportions and lines?

    As you say, money dictates..

    At a design product forum there is a competition to create a product, maybe it will be interesting to see some concept sketch of big yachts wich differentiate with other.

    If you see the picture of a mega yacht made by HDW, you should be scarred too. Do you mean the steelwork of Marco Polo would be a problem?

    If all boats looks the same it will be boring. New style, new technology and don't be conservative ;)


    Jos
  2. KCook

    KCook Senior Member

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    Bemusing point. Both my wife and I have an artistic background and training. Though very different flavors. Perspective comes easily for me, very difficult for my wife. I've heard that's a natural mars/venus thing. But her results are otherwise really better than mine. Different paths I suppose.

    Kelly
  3. jmr

    jmr New Member

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    Interesting Kelly,

    may be woman are better in emotion :rolleyes:

    no I think it depends on how good a person an artist is. thats why there is a wife who will advice and critice your work:D


    Jos
  4. AMG

    AMG YF Moderator

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    I agree with you, especially since many ugly boats are also copied...:eek:

    But conservative is not a bad thing. Look at Burger who is maintaining their heritage very well. Delta have also built some very nice and still conservative styled yachts.

    On new style, I think Ilona from Amels is the best in recent years, maybe the new 80 m from Oceanco will be another.

    But don´t ask me to point at the ugly, they are too many and I´ll probably be banned everywhere...:D
  5. jmr

    jmr New Member

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    Last week I saw one of Amel's yacht Lady Anne or Ann, at my customer "yard". It is relative small compared what my customer recently is building (80 meter). The big 3 windows on both side of the hull disturb me a little bit. May be it can solved in another way, "more integrated with the hull". What I hear, she got some finishing touch at B+V.

    In my opinion there is to little space for sunbathing, even at the front of the ship I dont see any comfortable space for sunbathing.

    Jos
  6. archnav.de

    archnav.de Senior Member

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    2D versus 3D

    We have made a lot of hull and superstructure fairing for large yachts using NAPA and other 3D-Programs. All this programs are building freeform surfaces starting with curves (Splines, Bezier or Nurbs). So all the different programs are working more or less in the same way. With normal 3d CAD Programs (like Rhino, SolidWorks, Inventor, Catia or UG) you can build good regular surfaces or solids in an easy way. This kind of surfaces you normally find in the area of the superstructure, but you have a lot of difficulties to define a bulbous bow which is normally a very complicated freeform surface, this could be better done in NAPA. In a lot of cases, it is necessary to define all freeform surfaces in NAPA for larger Yachts because of the use of Tribon for the steel production. The Tribon plate development need a NAPA-DB in the background.

    Overall you can start a project in 2D why not, but if you are coming to hydrostatic, loading conditions intact and damage stability your work should relaying on a variable 3d hull and there is of course up to now NAPA the best and most expensive solution.

    Since a long time our idea is to start the 3D process with NAPA incl. the main steel ,then switching this data over towards Class societies, doing there scantling, FE, noise and vibration and using this adjusted model afterwards in Napa and for detail design in Tribon, Catia, UG, SolidWorks, Inventor and so on. The interface link for the steel side should be from our point of view STEP AP218 and for the rest (Equipment and so on) of the ship Step AP214.

    The Step AP218 process has mostly been stopped in 2001, but we hope to reanimate the process soon. The STEP AP214 process has done a big jump since we work together with MAN for predesigned engine rooms for Container Ships, Bulkers and Tankers.

    It would be great if anybody can join the process to eliminate the missing bricks in the 3D-shipbuilding process.
    Last edited: May 15, 2006
  7. jmr

    jmr New Member

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    Hi David,


    maybe you should do, because it would be interesting if it is possible to achieve a fair hull with "standard high end CAD" like Catia and Unigraphics. Both software are to be used in automotive industry with A-Class Surface standards :)

    cheers,


    Jos
  8. tartanski

    tartanski Member

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    Hi Jos,

    We discovered we can, of course do hull fairing, the challenge is the different way automotive designers build up a class A surface is completely different from the way naval architects do it. I personally like to develop a hull form with the classical control curves and tangent lines method but with high end CAD you need to think differently.

    The yacht and shipbuilding industry really need the integration of Naval architecture, Hull surface design and specialist CAD. The problem of importing IGES and repairing it should not exist, but it does and seems to me to be a major issue in our industry.
  9. tartanski

    tartanski Member

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    3D sketching at last

    Look like someone is getting very close to developing an intuitive 3D hand sketching tool, as easy as drawing in 2D but creates a 3d line model which can be easily further developed.


    hope this link works.