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Abstract Recently, according to the increase of the operating cost and material cost of a ship due to the international oil price, a demand for the lightening of the ship weight is being made from shipping companies, ship owners, and shipyards. To satisfy such demand, many studies for a light ship are being made. Some of them include the optimal design of a hull structure, the proposal of a hull structure of new concept, the application of composite materials such as Fiber Reinforced Plastic (FRP) to a hull structure, and so on. Among them, the former studies are producing actual and effective results. Thus, an optimal design method of a hull structure, that is, a method for lightening the ship weight based on the optimization technique was proposed in this study. For this, we formulated an optimization problem for determining optimal principal dimensions of the hatch cover for lightening of a bulk carrier. Some dimensions representing the shape of the hatch cover were selected as design variables and some limitations related to the maximum stress, maximum deflection, and geometry of the hatch cover were selected as constraints. In addition, the minimization of the weight of the hatch cover was selected as an objective function. To solve this optimization problem, we developed an optimization program based on the genetic algorithm and the Sequential Quadratic Programming (SQP) using C++ language. To evaluate the applicability of the proposed method, it was applied to an optimal principal dimensions problem of the deadweight 180,000 ton bulk carrier. The result shows that the proposed method can decrease the ship weight. Thus, this study will be able to contribute to make energy saving and environment-friendly ship in shipyard.
Publication Date 2012-08-27

Tae-Sub Um, Jeong-Hoon Park, Myung-Il Roh, "Determination of Optimal Principal Dimensions of the Hatch Cover for Lightening of a Bulk Carrier", Proceedings of ISGMA(International Symposium on Green Manufacturing and Applications) 2012, Jeju, Korea, pp. 1-7, 2012.08.27-29


List of Articles
번호 분류 제목 Publication Date
33 Domestic Conference 한성남, 이규열, 노명일, "개선된 유전자 알고리즘을 이용한 최적 공간 배치 설계에 관한 연구", 2001년도 한국CAD/CAM학회 학술발표회, 서울, pp. 253-260, 2001.02.09 file 2001-02-09
32 Domestic Conference 노명일, 이규열, "협동 최적화 접근방법에 의한 다분야 최적 설계에 관한 연구", 2000년도 한국CAD/CAM학회 학술발표회, 서울, pp. 163-170, 2000.02.11 file 2000-02-11
31 Domestic Conference 노명일, 이규열, "협동 최적화 방법에 의한 다분야 최적화 기법에 관한 연구", 1999년도 대한조선학회 추계학술발표회, 대전, pp. 159-164, 1999.11.11-12 file 1999-11-11
30 Domestic Conference 임중현, 이상욱, 노명일, 이규열, "다면체를 이용한 선박 구획 계산에 관한 연구", 1999년도 대한조선학회 춘계학술발표회, 거제, pp. 103-106, 1999.04.22-23 file 1999-04-22
29 International Conference Nam-Kug Ku, Sol Ha, Myung-Il Roh, Kyu-Yeul Lee, "Development of a Kernel for Dynamic Analysis of Various Types of Multi-Crane in Shipyard", Proceedings of ISOPE(International Society of Offshore and Polar Engineers) 2013, Alaska, USA, pp. 693-701, 2013.06.30-07.05 file 2013-06-30
28 International Conference Sol Ha, Nam-Kug Ku, Myung-Il Roh, "Ontological Modeling and Process Simulation of LNG FPSO Liquefaction Cycle based on DEVS Formalism", Proceedings of ISOPE(International Society of Offshore and Polar Engineers) 2013, Alaska, USA, pp. 950-958, 2013.06.30-07.05 file 2013-06-30
27 International Conference Sang-Rai Cho, Jong-Min Kim, Young-Hun Kim, Joo-Sung Lee, Myung-Il Roh, "Towards More Rational Design of Ship Structures against Collisions", Proceedings of ICCGS(International Conference on Collision and Grounding of Ships) 2013, Trondheim, Norway, pp. 187-195, 2013.06.17-19 file 2013-06-17
26 International Conference Seong-Ho Seo, Myung-Il Roh, Nam-Kug Ku, Kyu-Yeul Lee, "Dynamic Response Simulation of an Offshore Wind Turbine Suspended by a Floating Crane", Proceedings of ISGMA(International Symposium on Green Manufacturing and Applications) 2012, Jeju, Korea, pp. 1-7, 2012.08.27-29 file 2012-08-27
25 International Conference Se-Yong Jeong, Seong-Ho Seo, Myung-Il Roh, "A Method for Determining a Ship Economic Route for Fuel Saving", Proceedings of ISGMA(International Symposium on Green Manufacturing and Applications) 2012, Jeju, Korea, pp. 1-5, 2012.08.27-29 file 2012-08-27
» International Conference Tae-Sub Um, Jeong-Hoon Park, Myung-Il Roh, "Determination of Optimal Principal Dimensions of the Hatch Cover for Lightening of a Bulk Carrier", Proceedings of ISGMA(International Symposium on Green Manufacturing and Applications) 2012, Jeju, Korea, pp. 1-7, 2012.08.27-29 file 2012-08-27
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