The general structural layout is usually defined during the preliminary design. An optimization tool at this stage featuring flexibility, modeling speed and user-friendliness may provide precious help to designers. At this stage, few parameters/dimensions have been fixed and standard finite element modeling is often unusable, particularly for design offices and small and medium-sized shipyards. The LBR5 package performs early design least cost optimization. The software contains a module to assesses the construction cost, a module to analyses the considered structure, and the mathematical optimizer code. The paper contains a detailed presentation of the optimization of a medium capacity LNG ship including a sensitivity analysis on frame/stiffener spacing. This industrial optimization example shows that 5-9% of the construction cost of the hull manufacturing can be saved by performing scantling optimization at the preliminary design stage.
An integrated software for scantling optimization and least production cost
Integrierte Software zur Optimierung der Materialstärke und Produktionskosten von Schiffsrümpfen
Ship Technology Research / Schiffstechnik ; 50 , 3 ; 125-140
2003
16 Seiten, 5 Bilder, 1 Tabelle, Quellen
Article (Journal)
English
Empfindlichkeitsanalyse , Fertigungskosten , Flüssiggastanker , Kosteneinsparung , Kostenoptimierung , Optimierungssimulation , Produktionskosten , rechnerunterstützter Entwurf , Schiffsentwurf , Schiffsrumpf , Software-Paket , Stahlrahmen , Versteifung , Wandstärke , Zielfunktion , Gewichtsminimierung
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