# Optimal section scantling design for ship structures using response surface method and genetic algorithm

W. H. Ho, J. T. Tsai, C. H. Lin, J. H. Chou

Research output: Contribution to journalArticle

1 Citation (Scopus)

### Abstract

In this paper, we propose an integrative procedure for solving the optimal section scantling design problems of the ship structures. First, the Taguchi method is applied to Find out the significant factors for the quality characteristics as the variables of the predicting mathematical model. Then, the response surface method (RSM) is used to construct the mathematical model. Finally, the genetic algorithm (GA) is adopted to search for the optimal soluion for obtaining the optimal section scantlings of the ship structures. In this paper, we also demonstrate the optimal section scantling design of a water breaker structure for the container ship. In this example, under the constraints of the von Mise stress, the positive shear stress and the negative shear stress, the design objective is the minimum weight of the water breaker structure. According to the proposed procedure, we obtain the weight is 16503 kg which is less than the existing weight 18098 kg. The weight of the water breaker structure is, therfore, reduced 8.81%. So, we can get the satisfactory result by using the proposed integrative design procedure.

Original language English 39-50 12 Journal of Taiwan Society of Naval Architects and Marine Engineers 26 1 Published - 2007 Feb 1

### Fingerprint

Ships
Genetic algorithms
Shear stress
Mathematical models
Water
Taguchi methods
Containers

### All Science Journal Classification (ASJC) codes

• Ocean Engineering
• Mechanical Engineering

### Cite this

title = "Optimal section scantling design for ship structures using response surface method and genetic algorithm",
abstract = "In this paper, we propose an integrative procedure for solving the optimal section scantling design problems of the ship structures. First, the Taguchi method is applied to Find out the significant factors for the quality characteristics as the variables of the predicting mathematical model. Then, the response surface method (RSM) is used to construct the mathematical model. Finally, the genetic algorithm (GA) is adopted to search for the optimal soluion for obtaining the optimal section scantlings of the ship structures. In this paper, we also demonstrate the optimal section scantling design of a water breaker structure for the container ship. In this example, under the constraints of the von Mise stress, the positive shear stress and the negative shear stress, the design objective is the minimum weight of the water breaker structure. According to the proposed procedure, we obtain the weight is 16503 kg which is less than the existing weight 18098 kg. The weight of the water breaker structure is, therfore, reduced 8.81{\%}. So, we can get the satisfactory result by using the proposed integrative design procedure.",
author = "Ho, {W. H.} and Tsai, {J. T.} and Lin, {C. H.} and Chou, {J. H.}",
year = "2007",
month = "2",
day = "1",
language = "English",
volume = "26",
pages = "39--50",
journal = "Journal of Taiwan Society of Naval Architects and Marine Engineers",
issn = "1023-4535",
publisher = "Taiwan Society of Naval Architects and Marine Engineers",
number = "1",

}

Optimal section scantling design for ship structures using response surface method and genetic algorithm. / Ho, W. H.; Tsai, J. T.; Lin, C. H.; Chou, J. H.

In: Journal of Taiwan Society of Naval Architects and Marine Engineers, Vol. 26, No. 1, 01.02.2007, p. 39-50.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Optimal section scantling design for ship structures using response surface method and genetic algorithm

AU - Ho, W. H.

AU - Tsai, J. T.

AU - Lin, C. H.

AU - Chou, J. H.

PY - 2007/2/1

Y1 - 2007/2/1

N2 - In this paper, we propose an integrative procedure for solving the optimal section scantling design problems of the ship structures. First, the Taguchi method is applied to Find out the significant factors for the quality characteristics as the variables of the predicting mathematical model. Then, the response surface method (RSM) is used to construct the mathematical model. Finally, the genetic algorithm (GA) is adopted to search for the optimal soluion for obtaining the optimal section scantlings of the ship structures. In this paper, we also demonstrate the optimal section scantling design of a water breaker structure for the container ship. In this example, under the constraints of the von Mise stress, the positive shear stress and the negative shear stress, the design objective is the minimum weight of the water breaker structure. According to the proposed procedure, we obtain the weight is 16503 kg which is less than the existing weight 18098 kg. The weight of the water breaker structure is, therfore, reduced 8.81%. So, we can get the satisfactory result by using the proposed integrative design procedure.

AB - In this paper, we propose an integrative procedure for solving the optimal section scantling design problems of the ship structures. First, the Taguchi method is applied to Find out the significant factors for the quality characteristics as the variables of the predicting mathematical model. Then, the response surface method (RSM) is used to construct the mathematical model. Finally, the genetic algorithm (GA) is adopted to search for the optimal soluion for obtaining the optimal section scantlings of the ship structures. In this paper, we also demonstrate the optimal section scantling design of a water breaker structure for the container ship. In this example, under the constraints of the von Mise stress, the positive shear stress and the negative shear stress, the design objective is the minimum weight of the water breaker structure. According to the proposed procedure, we obtain the weight is 16503 kg which is less than the existing weight 18098 kg. The weight of the water breaker structure is, therfore, reduced 8.81%. So, we can get the satisfactory result by using the proposed integrative design procedure.

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AN - SCOPUS:33947532904

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