| 첨부 '1' |
|---|
| Abstract | Membrane-type cargo holds, known for their high capacity, are commonly used in LNG carriers and are composed of various insulating materials and primary and secondary barriers to provide good thermal insulation and structural strength. The primary barrier, directly in contact with the liquefied cargo, is designed with a corrugated profile to withstand cryogenic thermal loads, cargo pressure, and sloshing loads. In this study, a novel method for developing the optimal profile of the primary barrier in a membrane-type LNG tank is proposed. The profile is defined using a third-order Bezier curve to allow flexibility in design, and tensile tests for SUS304L, cargo pressure calculations based on IGC code, and sloshing loads derived from model tests are used for non-linear structural analysis. Global optimization of the primary barrier profile is performed using the genetic algorithm NSGA-II, applying surrogate models as objective functions. Various surrogate models, including traditional methods and DNN, are evaluated to identify the most suitable model for optimization. The proposed method was compared and analyzed with the primary barrier geometry of the MARKIII FLEX cargo containment system (CCS) of a 174K LNG carrier. The results show that the optimal primary barrier can minimize longitudinal stress, permanent deformation, and production costs. |
|---|---|
| Publication Date | 2025-02-01 |
| Role | Corresponding Author |
| Category | SCI |
Dong-Woo Kim, Myung-Il Roh, Do-Hyun Chun, Sun-Hong Woo, Yong-Tai Kim, “A Method for the Profile Optimization of the Primary Barrier of a Membrane-type LNG Tank Using Surrogate Modeling”, Ocean Engineering, Vol. 317, 2025.02.01
https://doi.org/10.1016/j.oceaneng.2024.120054
Jeong-Woo Hong, Myung-Il Roh, Seung-Ho Ham, Sol Ha, "Dynamic Simulation of Subsea Equipment Installation Using an Offshore Support Vessel Based on Flexible Multibody System Dynamics", Journal of Marine Science and Technology (Taiwan), Vol. 24, No. 4
Jeong-Ho Park, Myung-Il Roh, Hye-Won Lee, Yeong-Min Jo, Jisang Ha, Nam-Sun Son, "Multi-vessel Target Tracking with Camera Fusion for Unmanned Surface Vehicles", International Journal of Naval Architecture and Ocean Engineering, Vol. 16, 2024.07.14
In-Su Han, Myung-Il Roh, Min-Chul Kong, “An Automated Method for Converting P&IDs in Shipbuilding to Structured Graphs”, International Journal of Naval Architecture and Ocean Engineering, Vol. 17, pp. 100696.1-20, 2025.10.04
In-Su Han, Myung-Il Roh, Min-Chul Kong, Seoyoon Park, Jeongyoul Lee, "Search Method for Ship Regulations Based on Semantic Similarity Using Natural Language Processing", Ships and Offshore Structures, 2025.05.12
In-Chang Yeo, Myung-Il Roh, Yun-Sik Kim, Ha-Yun Kim, Do-Hyeok Ahn, Nam-Sun Son, "A Localization Method of Nearby Ships Based on 3D Object Detection Using a Camera", International Journal of Naval Architecture and Ocean Engineering, 2025.11.12
In-Chang Yeo, Myung-Il Roh, Dong-Guen Jeong, Jun-Sik Lee, "A Route Planning Method for Small Ships Inside the Marina", International Journal of Naval Architecture and Ocean Engineering, Vol. 17, pp. 100684.1-16, 2025.08.13
In-Chang Yeo, Myung-Il Roh, Do-Hyun Chun, Seok Ho Jang, Jae Won Heo, "Optimal Arrangement Design of Pipeline Support by Considering Safety and Production Cost", International Journal of Naval Architecture and Ocean Engineering, 2023.05.10
Hyun-Soo Kim, Myung-Il Roh, “Interpretable, Data-driven Models for Predicting Shaft Power, Fuel Consumption, and Speed Considering the Effects of Hull Fouling and Weather Conditions”, IJNAOE, 2024.04.14
Hyun-Cheol Kim, Myung-Il Roh, Soon-Hung Han, "Passenger Evacuation Simulation of MV SEWOL Considering the Heeling Angle Change During Sinking", International Journal of Naval Architecture and Ocean Engineering, Vol. 11, No. 1, pp. 329-343, 2019.01.01
Hyun Soo Kim, Myung-Il Roh, "Data-driven Model for Predicting Tank Pressure of an LNG Carrier Considering Environmental Effects", accepted for publication in International Journal of Naval Architecture and Ocean Engineering, 2025.12.02
Hye-Won Lee, Myung-Il Roh, Yeong-Min Cho, Jeong-Ho Park, "Data Association for Autonomous Ships Based on the Virtual Simulation Environment", Ocean Engineering, Vol. 281, pp. 114646.1-17, 2023.08.01
Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, Sol Ha, "Dynamic Simulation of the Wireline Riser Tensioner System for a Mobile Offshore Drilling Unit Based on Multibody System Dynamics", Ocean Engineering, Vol. 106, pp. 485-495, 2015.09.15
Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, Nam-Kug Ku, "Coupled Analysis Method of a Mooring System and a Floating Crane Based on Flexible Multibody Dynamics Considering Contact with the Seabed", Ocean Engineering, Vol. 163, pp. 555-569, 2018.09.01
Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Underactuated Crane Control for the Automation of Block Erection in Shipbuilding", Automation in Construction, Vol. 124, pp. 1-28, 2021.04.01
Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Block Erection Simulation Considering Frictional Contact with Wire Ropes", Ocean Engineering, Vol. 217, pp. 1-24, 2020.12.01
Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Block Turnover Simulation Considering the Interferences between the Block and Wire Ropes in Shipbuilding", Automation in Construction, Vol. 67, pp. 60-75, 2016.07.01
Hye-Won Lee, Myung-Il Roh, Ki-Su Kim, “Ship Route Planning in Arctic Ocean Based on POLARIS”, Ocean Engineering, Vol. 234, pp. 109297.1-14, 2021.08.15
Hye-Won Lee, Myung-Il Roh, "Review of the Multibody Dynamics in the Applications of Ships and Offshore Structures", Ocean Engineering, Vol. 167, pp. 65-76, 2018.11.01
Hye-Won Lee, Joo-Hyun Woo, Myung-Il Roh, Seung-Ho Ham, et al., "Integrated Simulation of Virtual Prototypes and Control Algorithms of Unmanned Surface Vehicles Based on a Robot Operating System", Journal of Marine Science and Technology (Taiwan)
Ha-Yun Kim, Myung-Il Roh, Hye-Won Lee, In-Chang Yeo, Yeong-Min Jo, Jisang Ha, Nam-Sun Son, “A Hybrid Tracking Method for Maritime Obstacles Using Sensor Data”, Ocean Engineering, Vol. 312, Part 2, 2024.09.16
