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Abstract The motion of a semisubmersible drilling rig must be checked in advance to satisfy the safety criteria of the rig. However, the complexity of the rig’s connections makes it difficult to analyze the rig motion during the drilling operation because it is connected to the seabed by the blow-out preventer (BOP). The rig’s connections consist of several pieces of risers, a telescopic joint, and a riser tensioner system. Also, from a macroscopic perspective, the risers should be regarded as flexible threads. Therefore, this study developed a rig motion analysis program considering the deformable effects of flexible risers and the full connectivity of the drilling rig. Flexible multibody dynamics (FMBD) based on the absolute nodal coordinate formulation (ANCF) is adapted for the mathematical modeling of the risers and joints. Acting as an external disturbance, a hydrodynamic force and current force are exerted on the drilling rig and the risers, respectively. The drilling rig is fully modeled including the riser tensioner system, telescopic joint, flexible risers, and upper and lower flex joints. The motion analysis with and without connections was fulfilled to verify the effect of connectivity. Moreover, we observed that the movement of the drilling rig increases as the current speed increases. Finally, the simulation is successfully applied to check the motions and tensions of the drilling rig in moderate and storm conditions.
Publication Date 2017-10-01
Role Corresponding Author
Category SCIE
Impact Factor 0.993

Seung-Ho Ham, Myung-Il Roh, Jung-Woo Hong, “Dynamic Effect of a Flexible Riser in a Fully Connected Semisubmersible Drilling Rig Using the Absolute Nodal Coordinate Formulation”, Journal of Offshore Mechanics and Arctic Engineering, Vol. 139, No. 5, pp. 1-10, 2017.10.01


List of Articles
번호 분류 제목 Publication Date
114 International Journal Kyu-Yeul Lee, Myung-Il Roh, "A Hybrid Optimization Method for Multidisciplinary Ship Design", Journal of Ship Technology Research, Vol. 47, No. 4, pp. 181-185, 2000.10.01 file 2000-10-01
113 International Journal Kyu-Yeul Lee, Myung-Il Roh, "An Efficient Genetic Algorithm Using Gradient Information for Ship Structural Design Optimization", Journal of Ship Technology Research, Vol. 48, No. 4, pp. 161-170, 2001.11.01 file 2001-11-01
112 International Journal Kyu-Yeul Lee, Myung-Il Roh, Seonho Cho, "Multidisciplinary Design Optimization of Mechanical Systems Using Collaborative Optimization Approach", International Journal of Vehicle Design, Vol. 25, No. 4, pp. 353-368, 2001.11.01 file 2001-11-01
111 International Journal Kyu-Yeul Lee, Seonho Cho, Myung-Il Roh, "An Efficient Global-Local Hybrid Optimization Method Using Design Sensitivity Analysis", International Journal of Vehicle Design, Vol. 28, No. 4, pp. 300-317, 2002.07.01 file 2002-07-01
110 International Journal Kyu-Yeul Lee, Seong-Nam Han, Myung-Il Roh, "Optimal Compartment Layout Design for a Naval Ship Using an Improved Genetic Algorithm", Marine Technology and SNAME News, Vol. 39, No. 3, pp. 159-169, 2002.07.01 file 2002-07-01
109 International Journal Kyu-Yeul Lee, Seong-Nam Han, Myung-Il Roh, "An Improved Genetic Algorithm for Facility Layout Problems Having Inner Structure Walls and Passages", Computers & Operations Research, Vol. 30, No. 1, pp. 117-138, 2003.01.01 file 2003-01-01
108 International Journal Kyu-Yeul Lee, Won-Joon Lee, Myung-Il Roh, "Development of a Semantic Product Modeling System for Initial Hull Structure in Shipbuilding", Robotics and Computer-Integrated Manufacturing Journal, Vol. 20, No. 3, pp. 211-223, 2004.06.01 file 2004-06-01
107 International Journal Kyu-Yeul Lee, Myung-Il Roh, Hyuk-Su Jeong, "An Improved Genetic Algorithm for Multi-Floor Facility Layout Problems Having Inner Structure Walls and Passages", Computers & Operations Research, Vol. 32, No. 4, pp. 879-899, 2005.04.01 file 2005-04-01
106 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
105 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
104 International Journal Myung-Il Roh, Kyu-Yeul Lee, Seong-Jin Yoo, "An Algorithm for Generating the Hull Structural Analysis Model Using the Seam Information of the Hull Structure at the Initial Design Stage", Journal of Ship and Ocean Technology, Vol. 10, No. 4, pp. 24-33, 2006.12.01 file 2006-12-01
103 International Journal Myung-Il Roh, Kyu-Yeul Lee, Woo-Young Choi, "Rapid Generation of the Piping Model Having the Relationship with a Hull Structure in Shipbuilding", Advances In Engineering Software, Vol. 38, No. 4, pp. 215-228, 2007.04.01 file 2007-04-01
102 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
101 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
100 International Journal Myung-Il Roh, Kyu-Yeul Lee, Woo-Young Choi, Seong-Jin Yoo, "Improvement of Ship Design Practice Using a 3D CAD Model of a Hull Structure", Robotics and Computer-Integrated Manufacturing Journal, Vol. 24, No. 1, pp. 105-124, 2008.02.01 file 2008-02-01
99 International Journal Sang-Uk Lee, Myung-Il Roh, Ju-Hwan Cha, Kyu-Yeul Lee, "Ship Compartment Modeling Based On a Non-manifold Polyhedron Modeling Kernel", Advances In Engineering Software, Vol. 40, No. 5, pp. 378-388, 2009.05.01 file 2009-05-01
98 International Journal Ju-Hwan Cha, Myung-Il Roh, Kyu-Yeul Lee, "Combined Discrete Event and Discrete Time Simulation Framework and Its Application to the Block Erection Process in Shipbuilding", Advances In Engineering Software, Vol. 41, No. 4, pp. 656-665, 2010.04.01 file 2010-04-01
97 International Journal John-Kyu Hwang, Myung-Il Roh, Kyu-Yeul Lee, "Detailed Design and Construction of the Hull of an FPSO(Floating, Production, Storage, and Off-loading unit)", Ships and Offshore Structures, Vol. 5, No. 2, pp. 93-104, 2010.06.01 file 2010-06-01
96 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
95 International Journal Ju-Hwan Cha, Myung-Il Roh, Kyu-Yeul Lee, "Integrated Simulation Framework for the Process Planning of Ships and Offshore Structures", Robotics and Computer-Integrated Manufacturing Journal, Vol, 26, No. 5, pp. 430-453, 2010.10.01 file 2010-10-01
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