Scantling Multi-objective Optimisation of a LNG Carrier

Scantling optimisation; Multi-criterion optimisation; Multi-objective optimisation; LNG carriers; Shipbuilding; Production cost; Basic design; Amidships section

Abstract :

[en] Numerous real-world problems relating to ship design are characterized by many alternatives. Moreover in the scantling design, minimum production cost, minimum weight and maximum moment of inertia (stiffness) are conflicting objectives. Ship design is a complex endeavour requiring the successful coordination of many different disciplines, both technical and non-technical. Basic design is the least defined stage of the ship design process and seeks to define the optimal amidships section structure. For that purpose, recent improvements were made to the LBR-5 software to optimise the scantling of ship sections by considering production cost, weight and moment of inertia in the optimisation objective function. A real multi-criterion optimisation of a LNG carrier is conducted in this paper to illustrate the analysis process. Pareto frontiers are obtained and results highlight that LBR-5 is competitive software to optimise scantling of ships at very early design stage with management of critical problems studied normally at a later step of the design.

Disciplines :

Civil engineering
Mechanical engineering
Computer science

Author, co-author :

Caprace, Jean-David ; Université de Liège - ULiège > Département Argenco : Secteur TLU+C > ANAST (Systèmes de transport et constructions navales)

Bair, Frédéric ; Université de Liège - ULiège > Département ArGEnCo > Constructions hydrauliques et navales

Rigo, Philippe ; Université de Liège - ULiège > Département ArGEnCo > Constructions hydrauliques et navales

Language :

English

Title :

Scantling Multi-objective Optimisation of a LNG Carrier

Alternative titles :

[en] Optimisation Multi-objectif de l'Échantillonnage de LNG

Publication date :

July 2010

Journal title :

Marine Structures

ISSN :

0951-8339

Publisher :

Elsevier Science, Oxford, United Kingdom

Volume :

Issue :

Pages :

288-302

Peer reviewed :

Peer Reviewed verified by ORBi

Available on ORBi :

since 14 September 2010

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