Please use this identifier to cite or link to this item: http://scholarbank.nus.edu.sg/handle/10635/50373
Title: Algorithms for nesting of ship/offshore structural plates
Authors: Cheok, B.T. 
Nee, A.Y.C. 
Issue Date: 1991
Source: Cheok, B.T.,Nee, A.Y.C. (1991). Algorithms for nesting of ship/offshore structural plates. American Society of Mechanical Engineers, Design Engineering Division (Publication) DE 32 (pt 2) : 221-226. ScholarBank@NUS Repository.
Abstract: This paper discusses the development of a set of algorithms for the automatic nesting of ship/offshore structural plates. The algorithms are developed to take advantage of the peculiarity of most ship/offshore structural plates with the aims of optimising material usage and minimising computer search time. The parts to be nested are first processed by a shape processing routine which employs a simple feature extraction approach to classify the plates according to predefined rules specially adopted for ship/offshore structural shapes. The most appropriate search path for each class of plates is used to obtain the best enclosing rectangle for similar shapes. The search paths are based on heuristics developed to simulate the manual method used by the human operator. Finally, all the plates are laid out on the stock sheet using a 'rectangle packing' approach. A computer package, Patnest-Ship was developed to demonstrate the efficiency of the algorithms and very encouraging results are achieved. The input and output files to and from Patnest-Ship are described in DXF format so that it can be integrated with existing CAD/CAM systems. Pre- and post- processors for this package have been implemented on AutoCAD to permit the user to define the plates and interactively improve on the solutions provided by Patnest-Ship, if necessary.
Source Title: American Society of Mechanical Engineers, Design Engineering Division (Publication) DE
URI: http://scholarbank.nus.edu.sg/handle/10635/50373
ISBN: 0791807487
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

142
checked on Dec 16, 2017

Google ScholarTM

Check


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.