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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
140 International Conference Yoon-Nam An, Joo-Sung Lee, Myung-Il Roh, Bum-Sang Yoon, Kyoung-Sik Chang, "Shape Optimization of Structural Member Based on Isogeometry Concept", Proceedings of the 24th Asian-Pacific TEAM(Technical Exchange and Advisory Meeting on Marine Structures) 2010, Vladivostok, Russia, pp. 343-348, 2010.08.23-26 file 2010-08-23
139 International Conference Yoon-Nam An, Joo-Sung Lee, Myung-Il Roh, Bum-Sang Yoon, Kyoung-Sik Chang, "Parametric Study of Mesh Refinement in Isogeometric Analysis", Proceedings of ISOPE(International Society of Offshore and Polar Engineers) 2010, Beijing, China, pp. 809-812, 2010.06.20-26 file 2010-06-20
138 International Conference Yoon-Nam An, Joo-Sung Lee, Myung-Il Roh, Bum-Sang Yoon, Kyoung-Sik Chang, "Parametric Study of Isogeometric Analysis Using NURBS", Proceedings of the 23rd Asian-Pacific TEAM(Technical Exchange and Advisory Meeting on Marine Structures) 2009, Kaohsiung, Taiwan, pp. 169-173, 2009.11.30-12.03 file 2009-11-30
137 International Conference Yeongmin Jo, Myung-Il Roh, Hye-Won Lee, Donghun Yu, "A Ship Tracking Method under Dynamic Characteristic Changes with LSTM", Proceedings of G-NAOE 2022, Changwon, Korea, 2022.11.06-10 2022-11-06
136 International Conference Yeong-min Jo, Myung-Il Roh, Hye-Won Lee, Jisang Ha, Do-Hyun Chun, Min-chul Kong, "An Improved Method for the Sensor Fusion for Autonomous Ships", Proceedings of 10th PAAMES and AMEC 2023, Kyoto, Japan, 2023.10.18-20 file 2023-10-20
135 International Conference Won-Joon Lee, Kyu-Yeul Lee, Myung-Il Roh, O-Hwan Kwon, Sung-Geun Lee, "Development of an Initial Hull Structural CAD System for Computer-Aided Process Planning (CAPP)", Proceedings of ICCAS(International Conference on Computer Applications in Shipbuilding) 2002, Malmoe, Sweden, pp. 113-123, 2002.09.09-12 file 2002-09-09
» 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
133 International Conference Sung-Woo Park, Myung-Il Roh, Seong-Hoon Kim, Min-Jae Oh, "Material Requirements Planning of Offshore Structures Using Big Data Frameworks", Proceedings of ISCDE 2017, Ho Chi Minh, Vietnam, pp. 1-2, 2017.12.13-16 file 2017-12-15
132 International Conference Sung-Woo Park, Myung-Il Roh, Min-Jae Oh, Seong-Hoon Kim, Won-Joon Lee, In-Il Kim, Chang-Yong Kim, "Estimation Model of Energy Efficiency Operational Indicator Using Public Data Based on Big Data Technology", Proceedings of ISOPE 2018, Sapporo, Japan file 2018-06-14
131 International Conference Sung-Min Lee, Myung-Il Roh, Ki-Su Kim, Seung-Ho Ham, Shin-Hyung Kim, Jin-Ho Hwang, "Lug Arrangement Design Based on the Optimization Technique and the Dynamic Analysis for Safe Block Lifting in Shipbuilding", Proceedings of ISOPE 2016, Rhodes, Greece file 2016-06-30
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