Evalutionary algorithms for ship hull skinning approximation

Traditionally, the design process of a hull involves simulation using clay models. This must be done cautiously, accurately and efficiently in order to sustain the performance of ship. Presently, the current technology of Computer Aided Design, Manufacturing, Engineering and Computational Fluid Dyna...

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Main Author:	Setyo Adi, Delint Ira
Format:	Thesis
Language:	English
Published:	2011
Subjects:	VM Naval architecture Shipbuilding Marine engineering
Online Access:	http://eprints.utm.my/id/eprint/32777/1/DelintIraSetyoAdiMFSKSM2011.pdf
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spelling	my-utm-ep.327772018-05-27T07:51:33Z Evalutionary algorithms for ship hull skinning approximation 2011-04 Setyo Adi, Delint Ira VM Naval architecture. Shipbuilding. Marine engineering Traditionally, the design process of a hull involves simulation using clay models. This must be done cautiously, accurately and efficiently in order to sustain the performance of ship. Presently, the current technology of Computer Aided Design, Manufacturing, Engineering and Computational Fluid Dynamic has enabled a 3D design and simulation of a hull be done at a lower cost and within a shorter period of time. Besides that, automated design tools allow the transformation of offset data in designing the hull be done automatically. One of the most common methods in constructing a hull from the offset data is the skinning method. Generally, the skinning method comprised of skinning interpolation and skinning approximation. Skinning interpolation constructs the surface perfectly but improper selection of parameterization methods may cause bumps, wiggles, or uneven surfaces on the generated surface. On the other hand, using the skinning surface approximation would mean that the surface can only be constructed closer to data points. Thus, the error between the generated surface and the data points must be minimized to increase the accuracy. Therefore, this study aims to solve the error minimization problem in order to produce a smoother and fairer surface by proposing Non Uniform Rational B-Spline surface using various evolutionary optimization algorithms, namely, Gravitational Search Algorithm, Particle Swarm Optimization and Genetic Algorithm. The proposed methods involve four procedures: extraction of offset data from line drawing plan; generation of control points; optimization of a surface; and validations of hull surfaces. Validation is done by analyzing the surface curvature and errors between the generated surface and the given data points. The experiments were implemented on both ship hull and free form models. The findings from the experiments are compared with interpolated skinning surface and conventional skinning surface approximation. The results show that the optimized skinning surfaces using the proposed methods yield a smaller error, less control points generation and feasible surfaces while maintaining the shape of the hull. 2011-04 Thesis http://eprints.utm.my/id/eprint/32777/ http://eprints.utm.my/id/eprint/32777/1/DelintIraSetyoAdiMFSKSM2011.pdf application/pdf en public masters Universiti Teknologi Malaysia, Faculty of Computer Science and Information System Faculty of Computer Science and Information System
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	VM Naval architecture Shipbuilding Marine engineering
spellingShingle	VM Naval architecture Shipbuilding Marine engineering Setyo Adi, Delint Ira Evalutionary algorithms for ship hull skinning approximation
description	Traditionally, the design process of a hull involves simulation using clay models. This must be done cautiously, accurately and efficiently in order to sustain the performance of ship. Presently, the current technology of Computer Aided Design, Manufacturing, Engineering and Computational Fluid Dynamic has enabled a 3D design and simulation of a hull be done at a lower cost and within a shorter period of time. Besides that, automated design tools allow the transformation of offset data in designing the hull be done automatically. One of the most common methods in constructing a hull from the offset data is the skinning method. Generally, the skinning method comprised of skinning interpolation and skinning approximation. Skinning interpolation constructs the surface perfectly but improper selection of parameterization methods may cause bumps, wiggles, or uneven surfaces on the generated surface. On the other hand, using the skinning surface approximation would mean that the surface can only be constructed closer to data points. Thus, the error between the generated surface and the data points must be minimized to increase the accuracy. Therefore, this study aims to solve the error minimization problem in order to produce a smoother and fairer surface by proposing Non Uniform Rational B-Spline surface using various evolutionary optimization algorithms, namely, Gravitational Search Algorithm, Particle Swarm Optimization and Genetic Algorithm. The proposed methods involve four procedures: extraction of offset data from line drawing plan; generation of control points; optimization of a surface; and validations of hull surfaces. Validation is done by analyzing the surface curvature and errors between the generated surface and the given data points. The experiments were implemented on both ship hull and free form models. The findings from the experiments are compared with interpolated skinning surface and conventional skinning surface approximation. The results show that the optimized skinning surfaces using the proposed methods yield a smaller error, less control points generation and feasible surfaces while maintaining the shape of the hull.
format	Thesis
qualification_level	Master's degree
author	Setyo Adi, Delint Ira
author_facet	Setyo Adi, Delint Ira
author_sort	Setyo Adi, Delint Ira
title	Evalutionary algorithms for ship hull skinning approximation
title_short	Evalutionary algorithms for ship hull skinning approximation
title_full	Evalutionary algorithms for ship hull skinning approximation
title_fullStr	Evalutionary algorithms for ship hull skinning approximation
title_full_unstemmed	Evalutionary algorithms for ship hull skinning approximation
title_sort	evalutionary algorithms for ship hull skinning approximation
granting_institution	Universiti Teknologi Malaysia, Faculty of Computer Science and Information System
granting_department	Faculty of Computer Science and Information System
publishDate	2011
url	http://eprints.utm.my/id/eprint/32777/1/DelintIraSetyoAdiMFSKSM2011.pdf
_version_	1747816057944408064

Evalutionary algorithms for ship hull skinning approximation

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