Browse > Article
http://dx.doi.org/10.3744/SNAK.2011.48.2.178

A Study on the Optimum Design of Cargo Tank for the LPG Carriers Considering Fabrication Cost  

Shin, Sang-Hoon (Hyundai Maritime Research Institute, Hyundai Heavy Industries Co., Ltd.)
Hwang, Sun-Bok (Basic Hull Design Department, Hyundai Heavy Industries Co., Ltd.)
Ko, Dae-Eun (Department of Naval Architecture and Ocean Engineering, Dong-Eui University)
Publication Information
Journal of the Society of Naval Architects of Korea / v.48, no.2, 2011 , pp. 178-182 More about this Journal
Abstract
Generally in order to reduce the steel weight of stiffened plate, stiffener spaces tend to be narrow and the plate gets thin. However, it will involve more fabrication cost because it can lead to the increase of welding length and the number of structural members. In the yard, the design which is able to reduce the total fabrication cost is needed, although it requires more steel weight. The purpose of this study is to find optimum stiffener spaces to minimize the fabrication cost for the cargo tank of LPG Carriers. Global optimization methods such as ES(Evolution Strategy) and GA(Genetic Algorithm) are introduced to find a global optimum solution and the sum of steel material cost and labor cost is selected as main objective function. Convergence degree of both methods in according to the size of searching population is examined and an efficient size is investigated. In order to verify the necessity of the optimum design based on the cost, minimum weight design and minimum cost design are carried out.
Keywords
LPG carrier; Evolution strategy; Genetic algorithm; Labor cost; Minimum weight design; Minimum cost design;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
연도 인용수 순위
1 Shin, S.H. & Ko, D.E., 2009. Development of the Weight Reduction Program for Corrugated Bulkheads of a Product Oil Carrier. Journal of the Society of Naval Architects of Korea, 46(3), pp. 279-289.   과학기술학회마을   DOI   ScienceOn
2 Na, S.S. Yum, J.S. & Kim, Y.S., 2010. The Structural Design of a Large Oil Tanker Based on the CSR by Considering the Web Arrangement and Material Property. Journal of the Society of Naval Architects of Korea, 47(4), pp.598-605.   과학기술학회마을   DOI   ScienceOn
3 Goldberg, D.E., 1989. Genetic Algorithms in Search Optimization & Machine Learning. Addison Wesley.
4 Kim, M.C. Lee, U.S. & Byun, T.Y., 2008. Study on Optimization of Anti-erosion Rudder Section Large Container Ship by Genetic Algorithm. Journal of the Society of Naval Architects of Korea, 45(4), pp.403-410.   과학기술학회마을   DOI   ScienceOn
5 Lee, J.S. & Kim, J.M., 2007. Optimum Structural Design of Panel Block Considering the Productivity. Journal of the Society of Naval Architects of Korea, 44(2), pp.139-147.   과학기술학회마을   DOI   ScienceOn
6 Pinto, A. Peri, D. & Campana, E.F., 2004. Global Optimization Algorithms in Naval Hydrodynamics. Ship Technology Research, 51(3), pp.123-133.   DOI
7 Schwefel, H.P., 1981. Numerical Optimization of Computer Models, Wiley, Chichester.