Cost reduction of polar class vessels : structural optimization that includes production factors
Name
859147396-MIT.pdf
Description
Full printable version
Size
19.67 MB
Format
Adobe PDF
Checksum (MD5)
54e6a4ca0c0d4c45f82bc95dfc42a4e4
Author(s)
Normore, Stephen S. (Stephen Selwyn)
Advisor(s)
Daniel D. Frey.
Date Issued
2013
Publisher
Massachusetts Institute of Technology
Abstract
The design of ship structures was normally optimized to reduce construction material and maintain adequate strength while adhering to a given classification society's rules. In the case of Polar Class vessels, where weight minimization was important, higher fabrication labor costs occurred due to the closely spaced frames and thicker material needed. There was a cost trade-off between minimizing material under the traditional design method and designing a ship that was easier to construct at the shipyard, i.e. designing for downstream processes. Using the newly defined Unified Requirements for Polar Ships by the International Association of Classification Societies Inc., a numerical tool was developed to minimize construction cost of the icebreaker's hull form. This tool allowed the user to tailor the labor and material metrics to represent a specific shipyard. The tool then specified an optimum structural solution in terms of minimum weight and production cost.
Description
Thesis (S.M. in Naval Architecture and Marine Engineering)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering; and, (S.M.)--Massachusetts Institute of Technology, Engineering Systems Division, 2013.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 82-83).
Subjects
Mechanical Engineering.
Engineering Systems Division.
MIT Department
Massachusetts Institute of Technology. Department of Mechanical Engineering
Massachusetts Institute of Technology. Engineering Systems Division
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