Ropax structural design-multi-level decision support methodology

Žanić, Vedran and Andrić, Jerolim and Prebeg, Pero and Stipčević, Marko and Pirić, Karlo (2010) Ropax structural design-multi-level decision support methodology. = Ropax structural design-multi-level decision support methodology. In: 11th International Symposium on Practical Design of Ships and Other Floating Structures, PRADS 2010, 19.-24.09.2010., Rio de Janeiro; Brazil.

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The novel decision support methodology for the concept and preliminary design of a multi-deck ship structures is described together with its application to the structural design of large RoPax ship. The multicriteria, multi-stakeholder design problem was solved with the support of the ship-owner; the Classification Society and the shipyard, within the EU FP6 project IMPROVE. Approach combines three design steps for the fast generation of different design variants regarding topological (no. of decks geometrical (bulkhead and deck positions scantlings variables. For each design step different structural FEM models, load models and optimization models have been established. In the final step the full ship 3D FEM model was developed to validate and synthesize the optimal design variant using safety, weight, cost and fatigue criteria. Decision making implied MODM and MADM (optimization) procedures based on dual SLP and MOPSO solvers combined with the stakeholders' subjective decision making (selection on the generated Pareto frontiers. The procedure resulted in the optimal structural design of the RoPax ship with two superstructure decks, increased parking area on lower decks, lower VCG position, etc., combined with the considerable savings in the ship lightweight and related savings in the fuel and other operational costs. © 2010 COPPE/UFRJ.

Item Type: Conference or Workshop Item (Lecture)
Keywords (Croatian): 3D FEM model; Classification societies; Decision supports; Design problems; Design steps; Fatigue criteria; FEM models; Load models; Multi-criteria; Multi-stakeholder; Optimal design; Optimization models; Pareto frontiers; Parking areas; Preliminary design; Ship structure; Decision making; Decision support systems; Decks (ship); Finite element method; Optimization; Structural design; Structural optimization; Naval architecture
Subjects: TECHNICAL SCIENCE > Shipbuilding
Divisions: 600 Department of Naval Engineering and Marine Technology > 620 Chair of Marine Structures Design
Indexed in Web of Science: No
Indexed in Current Contents: No
Citations SCOPUS: 9 (25.10.2017.)
Date Deposited: 17 Apr 2015 07:22
Last Modified: 25 Oct 2017 08:19

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