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Scantling multi-objective optimisation of a LNG carrier
In: Marine Structures. Elsevier: Oxford. ISSN 0951-8339; e-ISSN 1873-4170, meer
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| Trefwoord |
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| Author keywords |
Scantling optimisation; Multi-criteria optimisation; Multi-objective optimisation; LNG carriers; Shipbuilding; Production cost; Basic design; Amidships section |
| Auteurs | | Top |
- Caprace, J.-D.
- Bair, F.
- Rigo, P.
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| Abstract |
Numerous real-world problems related to ship design can be solved by various alternatives. However, the scantling design has conflicting objectives such as minimum production cost, minimum weight and maximum moment of inertia (stiffness). Therefore a multi-purpose solution had to be settled in order to meet all these requirements at once. Ship design is a complex endeavour requiring 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 have been made to a numerical tool in order to optimise the scantling of ship sections by considering production cost, weight and moment of inertia in the optimisation objective function. A multi-criteria optimisation of a LNG carrier is conducted in this paper to illustrate the analysis process. Pareto frontiers are obtained and results have been validated by the Bureau Veritas rules. The methodology presented in this paper has demonstrated its effectiveness in optimising scantling of ships at a very early design stage thanks to a management of critical problems usually studied at a later stage of the design. |
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