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Development of a Computer Program for the Optimization of Deck Accommodation Arrangements of Ships and Craft Applying GRASP and VNS Meta-Heuristics Methods

[+] Author Affiliations
Richard David Schachter, Nair Maria Maia de Abreu, Valdir Agustinho de Melo, Eliane Maria Loiola

UFRJ, Rio de Janeiro, RJ, Brazil

Paper No. OMAE2011-50135, pp. 737-746; 10 pages
doi:10.1115/OMAE2011-50135
From:
  • ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering
  • Volume 1: Offshore Technology; Polar and Arctic Sciences and Technology
  • Rotterdam, The Netherlands, June 19–24, 2011
  • ISBN: 978-0-7918-4433-5
  • Copyright © 2011 by ASME

abstract

This work presents a computer program developed for the definition of Deck Accommodation Arrangements of ships and craft that allocates spaces in an automated process, in order to help the designer with options and initial ideas for its definition or to optimize arrangements propositions. This optimization process is usually done based on experience, using maritime regulations and practices. It is an evolution of previous works [14] which adopted the Quadratic Assignment Problem (QAP), that allowed the user to select units to be assigned to demarcated spaces and the program provides optimized options of arrangements, which can be transformed, in turn, into drawings. In this work, a hybrid meta-heuristic has been incorporated to the program, namely the Greedy Randomized Adaptive Search Procedures — GRASP [7], and for the local search of solutions, the Variable Neighborhood Search — VNS [8], to improve the results. The program incorporates the mathematical model, containing menus of types of accommodation/compartments or deck units, for the user’s selection. Visualization and manipulation screens for friendly use were created, that allow the designer to quickly assemble deck arrangements in spaces, with an indirect tri-dimensionality feature. The program processes position and flow matrices, being the later ones determined through calibration (being modifiable) as a function of applicable Regulations of ILO 147 Convention, SOLAS and NORMAM (Brazilian Administration), incorporating as well maritime practice and usual ergonomic criteria for requirements of safety and habitability. The results can be used for General Arrangement drawings and can aid in the calculations of light weight and center of gravity, sail area, etc. A small discussion of recommendations for accommodation arrangements of the related regulations, rules of thumb derived from design practice and ergonomic criteria is provided.

Copyright © 2011 by ASME

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