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Abstract Ship and offshore plants are constructed with cranes on the dock by joining several blocks, which are basic units for design and production in shipbuilding. In the joining process, the erection and turn‐over operation of a block can cause interference between the block and the wire ropes on the cranes. To identify such a possibility in advance, lifting simulation, which is a kind of dynamic simulation, can be used based on multibody system dynamics. At this time, it is necessary to calculate the contact forces exerted on the block because the block can be damaged or structurally deformed if the contact forces become larger than the allowable value. However, if the lifting simulation is performed with the traditional wire rope model modeled by an incompressible spring, it is difficult to check whether the block and the wire ropes interfere with each other, and to calculate the contact forces exerted, if any. To perform a realistic lifting simulation, a wire rope model that takes interference into consideration is adopted in this study. In addition, a contact algorithm that consists of four steps is proposed to check contacts and to calculate the contact forces. First, the Möller algorithm, which is generally known as the fastest algorithm for triangle-ray intersection, is applied to detect the contacts. Second, the contacted wire rope is divided to cope with the contacts. Third, the contact forces are calculated with the sum of the tensions in the wire rope segments including a contact point. To verify the efficiency and applicability of the proposed method, it is applied to block turnover simulation. It can be seen that the contacts can be accurately checked, and the corresponding contact forces can be calculated if there are contacts between the block and the wire ropes on the crane.
Publication Date 2016-07-01
Role Corresponding Author
Category SCIE
Impact Factor 2.442

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


List of Articles
번호 분류 제목 Publication Date
74 International Journal Myung-Il Roh, Kyu-Yeul Lee, "Optimal Scheduling of Block Lifting in Consideration of the Minimization of Traveling Distance While Unloaded and Wire and Shackle Replacement of a Gantry Crane", Journal of Marine Science and Technology, Vol. 15, No. 2, pp. 190-200, 2010.06.01 file 2010-06-01
73 International Journal Myung-Il Roh, Kyu-Yeul Lee, "Generation of the Production Material Information of a Building Block and Simulation of the Block Erection for Computer-Aided Process Planning and Scheduling in Shipbuilding", International Journal of Production Research, Vol. 45, No. 20, pp. 4653-4683, 2007.10.01 file 2007-10-01
72 International Journal Myung-Il Roh, Kyu-Yeul Lee, "Generation of the 3D CAD Model of the Hull Structure at the Initial Ship Design Stage and Its Application", Computers in Industry, Vol. 58, No. 6, pp. 539-557, 2007.08.01 file 2007-08-01
71 International Journal Myung-Il Roh, Kyu-Yeul Lee, "Development of a 3D CAD System for Modeling Hull Structure at the Initial Ship Design Stage", Ships and Offshore Structures, Vol. 1, No. 2, pp. 135-151, 2006.04.01 file 2006-04-01
70 International Journal Myung-Il Roh, Kyu-Yeul Lee, "An Initial Hull Structural Modeling System for Computer-Aided Process Planning in Shipbuilding", Advances In Engineering Software, Vol. 37, No. 7, pp. 457-476, 2006.07.01 file 2006-07-01
69 International Journal Myung-Il Roh, Ju-Hwan Cha, "A Block Transportation Scheduling System Considering a Minimization of Travel Distance without Loading of and Interference between Multiple Transporters", International Journal of Production Research, Vol. 49, No. 11, pp. 3231-3250, 2011.06.01 file 2011-06-01
68 International Journal Myung-Il Roh, "Determination of an Economical Shipping Route Considering the Effects of Sea State for Lower Fuel Consumption", International Journal of Naval Architecture and Ocean Engineering, Vol. 5, No. 2, pp. 246-262, 2013.06.01 file 2013-06-01
67 International Journal Myung-Il Roh, "Block Layout Method in the Block Stockyard Based on the Genetic Algorithm", Ocean Systems Engineering, Vol. 2, No. 4, pp. 271-287, 2012.12.01 file 2012-12-01
66 International Journal Min-Jae Oh, Taw-Wan Kim, Myung-Il Roh, "G1 Bezier Surface Interpolation with T-junctions at a 3-Valent Singular Vertex", Computer Aided Geometric Design, Vol. 67, pp. 79-95, 2018.12.01 file 2018-12-01
65 International Journal Min-Jae Oh, Myung-Il Roh, Tae-Wan Kim, "Local T-spline Surface Skinning with Shape Preservation", Computer-Aided Design, Vol. 104, pp. 15-26, 2018.11.01 file 2018-11-01
64 International Journal Min-Jae Oh, Myung-Il Roh, Sung-Woo Park, Do-Hyun Chun, Se-Hyun Myung, "Big Data-based Piping Material Analysis Framework in Offshore Structure for Contract Design", Ocean Systems Engineering, Vol. 9, No. 1, pp. 79-95, 2019.01.01 file 2019-01-01
63 International Journal Min-Jae Oh, Myung-Il Roh, Sung-Woo Park, Do-Hyun Chun, Myeong-Jo Son, Jeong-Youl Lee, “Operational Analysis of Container Ships by Using Maritime Big Data”, Journal of Marine Science and Engineering, Vol. 9, No. 4, pp. 438: 1-21, 2021.04.18 file 2021-04-18
62 International Journal Min-Chul Kong, Myung-Il Roh, Ki-Su Kim, Jeongyoul Lee, Jongoh Kim, Gapheon Lee, "Object Detection Method for Ship Safety Plans Using Deep Learning", Ocean Engineering, 2022.02.15 file 2022-02-15
61 International Journal Min-Chul Kong, Myung-Il Roh, Ki-Su Kim, Ho-Gyun Park, Jong-Oh Kim, "Variable Indexing Method in Rule Documents for Ship Design Using Extraction of PDF Elements", Journal of Computational Design and Engineering, Vol. 9, No. 6, 2022.11.16 file 2022-11-16
60 International Journal Luman Zhao, Myung-Il Roh, “A Thrust Allocation Method for Efficient Dynamic Positioning of a Semisubmersible Drilling Rig Based on the Hybrid Optimization Algorithm”, Mathematical Problems in Engineering, Vol. 2015, pp. 1-12, 2015.10.01 file 2015-10-01
59 International Journal Luman Zhao, Myung-Il Roh, Sung-Jun Lee, "Control Method for Path Following and Collision Avoidance of Autonomous Ships Based on Deep Reinforcement Learning", Journal of Marine Science and Technology (Taiwan), Vol. 27, No. 4, pp. 293-310, 2019.08.01 file 2019-08-01
58 International Journal Luman Zhao, Myung-Il Roh, Seung-Ho Ham, "Performance Analysis of an Active Heave Compensation System on an Offshore Supply Vessel Using the Hardware-In-The-Loop Simulation", Journal of Marine Science and Technology (Taiwan), Vol. 26, No. 5 file 2018-10-01
57 International Journal Luman Zhao, Myung-Il Roh, Seung-Ho Ham, "Anti-Sway Control of the Crane on an Offshore Support Vessel Based on the Hardware-In-The-Loop Simulation", International Journal of Offshore and Polar Engineering, Vol. 28, No. 2, pp. 182-189, 2018.06.01 file 2018-06-01
56 International Journal Luman Zhao, Myung-Il Roh, Jeong-Woo Hong, "Optimal Thrust Allocation for Dynamic Positioning of Deep-sea Working Vessel", Journal of Advanced Research in Ocean Engineering, Vol. 1, No. 2, pp. 94-105, 2015.06.01 file 2015-06-01
55 International Journal Luman Zhao, Myung-Il Roh, "COLREGs-Compliant Multiship Collision Avoidance Based on Deep Reinforcement Learning", Ocean Engineering, Vol. 191, pp. 1-15, 2019.11.01 file 2019-11-01
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