2 edition of Analysis and design of developable surfaces for shipbuilding found in the catalog.
1997 by Available from National Technical Information Service in Springfield, Va .
Written in English
Developable surfaces are widely used in manufacturing with materials that are not amenable to stretching. Applications include the formation of ship hulls, ducts, shoes, clothing and automobile parts such as upholstery and body panels. In shipbuilding, developable surfaces are shaped using only rollers or presses. Heat treatment is then used only to remove distortion induced by welding or other means. Doubly curved surfaces, on the other hand, must be heat treated after rolling to induce the additional curvature. The heat treatment is normally done by hand, by a skilled artisan with years of training to achieve the correct amount of bending. This is an extremely time consuming, labor intensive and thus expensive process. According to Avondale/IHI Shipbuilding Technology Transfer data for a tanker, only 15.1% of the curved plates in a ship hull are singly curved, while 65.8% of the plates are doubly curved, requiring roller and heat treatment processes. An intensive effort to increase the amount of developable surfaces in the hulls of merchant ships at Burmeister & Wain Shipyard has resulted in a reported 20% reduction in manhours required to produce a hull. Designing a ship entirely of singly curved, or developable, surfaces would reduce construction costs even more. The main goal of this research is to develop a user-friendly method of designing developable surfaces with a B-spline representation. The effort is then extended to address some common differential geometry properties that will be useful in the design and manufacturing process. The ultimate goal is to provide a method to design a complete ship hull from developable surfaces and to generate cutting and bending information in a format that is user friendly for both the engineer and the worker. Although this thesis does not go that far, it takes a major step toward this goal.
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Analysis and design of developable surfaces for shipbuilding Item Preview of bending. This is an extremely time consuming, labor intensive and thus expensive process.
According to Avondale/IHI Shipbuilding Technology Transfer data for a tanker, only % of the curved plates in a ship hull are singly curved, while % of the plates are Pages: Chalfant, J. “Analysis and Design of Developable Surfaces for Shipbuilding,” Master’s thesis, Massachusetts Institute of Technology, Department of Ocean Engineering, Cambridge, Massachusetts, Cited by: The use of rational Bézier and B-spline bases is focused on, and a technique for the geometric design of developable surfaces is developed that has all the characteristics of existing methods for.
possible the analysis of the 3-D form of folde d geological surfaces. A large num ber of techniques exist for extracting different types of geometrical attributes of such surfaces (Roberts, ). Developable surfaces are a research field in Geometric Design and several authors have produced interesting ideas for marine design.
Reference  defines a developable Bézier surface in terms of two Bézier curves (directrix lines or directrices) and rulings between pairs of points from each by: Design and analysis of US Navy shipbuilding contract architecture.
Author(s) McCoy, Kathleen Marie, LCDR. DownloadFull printable version (Mb) Alternative title. Design and analysis of United States Navy shipbuilding contract architecture. Other Contributors. System Design and. Summary.
Analysis and Design of Marine Structures includes the papers from MARSTRUCTthe 4 th International Conference on Analysis and design of developable surfaces for shipbuilding book Structures (Espoo, Finland, March ).
The MARSTRUCT series of conferences started in Glasgow, UK infollowed by the second conference in Lisbon, Portugal (March ), while the third conference was held in Hamburg, Germany (March. The conference reflects the work conducted in the analysis and design of marine structures, in order to explore the full range of methods and modelling procedures for the structural assessment of marine structures.
Various assessment methods are incorporated in the methods used to analyze and design efficient ship structures, as well. The modeling of developable surfaces is considered a very important application in plat-metal-based industries.
Relating to the purpose, this discussion aims to obtain some formulas for constructing the regular developable Bézier patches, in which each boundary curve must be laid in two parallel planes.
The results as follows: We find some formulas of the equation systems that are described Author: Kusno. Books, Proceedings & CDs.
B-spline and NURBS representation, ruled and developable surfaces, subdivision surfaces, and classic computational topics such as hydrostatic properties and initial stability. This book presents a comprehensive and up-to-date treatment of propeller analysis and design, including Analysis and design of developable surfaces for shipbuilding book with an introduction.
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Ship Structural Analysis and Design Details. This book focuses on the most complex aspects of ship structural design which is preliminary design and will benefit structural designers and students.
The text uses a rationally-based design approach (design from first principles), which is ideally suited to preliminary structural design. Analysis and Design of Developable Surfaces for Shipbuilding. Master's thesis, Massachusetts Institute of Technology, Department of Ocean Engineering, Cambridge, Massachusetts, Ship Structural Analysis and Design [Owen F.
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While researchers encounter severe problems during the forming of a 3D free form shape, at least one category of surfaces can be made with the process of laser forming, namely the developable surfaces, which are widely used in, for example, ship by: 2.
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Therefore developable surfaces are also called single-curved surfaces, as opposed to doubly-curved surfaces. The cost of manufacturing doubly curved surfaces is high as compared to single curved developable surface.
The design philosophy of developable surfaces can be applied for both naval and commercial by: Ship Construction, Seventh Edition, offers guidance for ship design and shipbuilding from start to provides an overview of current shipyard techniques, safety in shipyard practice, materials and strengths, welding and cutting, and ship structure, along with computer-aided design and manufacture, international regulations for ship types, new materials, and fabrication technologies.
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The research work reported generated good results using quadric surface patches, continuous to the first. Ship Design I Manuel Ventura [email protected] MSc in Naval Architecture and Marine Engineering a Design Process 2 Summary 1.
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Haritos The University of Melbourne, Australia ABSTRACT: This paper provides a broad overview of some of the key factors in the analysis and design of offshore structures to be considered by an engineer uninitiated in the field of offshore engineering.
TopicsFile Size: 1MB. All curved surfaces may be classified as "developable" or "undevelopable." The side of a cylinder is a familiar example of a developable surface, and a sphere an undevelopable one. WOOD: A MANUAL FOR ITS USE AS A SHIPBUILDING MATERIAL VOLUMES 1 THROUGH IV L.F.
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This document serves as a basic introduction to the tool. It is intended to acquaint users with the tool's basic Author: Mark V. Arena, John F. Schank, Megan Abbott. processes for design and engineering activities within shipbuilding. The rest of the paper is organized as follows: first a presentation of shipbuilding in Norway; then the methodology approached for the literature review, followed by the preliminary findings and a conclusion part.
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