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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
81 International Journal Dong-Hoon Jeong, Myung-Il Roh, Seung-Ho Ham, "Lifting Simulation of an Offshore Supply Vessel Considering Various Operating Conditions", Advances in Mechanical Engineering, Vol. 8, No. 6, pp. 1-13, 2016.06.16 file 2016-06-16
80 International Journal 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 file 2016-07-01
79 International Journal 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 file 2016-08-01
78 International Journal Ki-Su Kim, Myung-Il Roh, "A Submarine Arrangement Design Program Based on the Expert System and the Multistage Optimization", Advances In Engineering Software, Vol. 98, No. 97-111, 2016.08.01 file 2016-08-01
77 International Journal Sol Ha, Seong-Ho Seo, Myung-Il Roh, Hyun-Kyoung Shin, "Simplified Nonlinear Model for the Weight Estimation of FPSO Plant Topside Using the Statistical Method", Ships and Offshore Structures, Vol. 11, No. 6, pp. 603-619, 2016.09.01 file 2016-09-01
76 Domestic Journal 김성훈, 노명일, 김기수, "조선 해양 산업에서의 응용을 위한 하둡 기반의 빅데이터 플랫폼 연구", 한국CAD/CAM학회 논문집, Vol. 21, No. 3, pp. 334-340, 2016.09.01 file 2016-09-01
75 Domestic Journal 이수호, 안현식, 김한성, 허윤, 배재류, 김기수, 함승호, 이성민, 노명일, "FPSO Topsides Pipe Rack 견적 중량 추산 방법 연구", 대한조선학회 논문집, Vol. 53, No. 5, pp. 362-370, 2016.10.01 file 2016-10-01
74 International Journal John-Kyu Hwang, Myung-Il Roh, Ju-Hwan Cha, “Design Modification of a Damaged Free-Fall Lifeboat for FPSO Through Free-Fall Tests”, International Journal of Offshore and Polar Engineering, Vol. 26, No. 4, pp. 417-422, 2016.12.01 file 2016-12-01
73 International Journal Sol Ha, Tae-Sub Um, Myung-Il Roh, Hyun-Kyoung Shin, “A Structural Weight Estimation Model of FPSO Topsides Using an Improved Genetic Programming Method”, Ships and Offshore Structures, Vol. 12, No. 1, pp. 43-55, 2017.01.01 file 2017-01-01
72 International Journal Ju-Sung Kim, Myung-Il Roh, Seung-Ho Ham, “A Method for Intermediate Flooding and Sinking Simulation of a Damaged Floater in Time Domain”, Journal of Computational Design and Engineering, Vol. 4, No. 1, pp. 1-13, 2017.01.01 file 2017-01-01
71 International Journal Sung-Kyoon Kim, Myung-Il Roh, Ki-Su Kim, “Evaluation of Feasibility Index in the Arrangement Design of an Offshore Topside based on the Automatic Transformation of Experts’ Knowledge and the Fuzzy Logic”, Ocean Engineering, Vol. 130, 2017.01.15 file 2017-01-15
70 International Journal Seong-Hoon Kim, Myung-Il Roh, Ki-Su Kim, Min-Jae Oh, “Big Data Platform Based on Hadoop and Application to Weight Estimation of FPSO Topside”, Journal of Advanced Research in Ocean Engineering, Vol. 3, No. 1, pp. 32-40, 2017.03.01 file 2017-03-01
69 International Journal Sung-Kyoon Kim, Myung-Il Roh, Ki-Su Kim, “Arrangement Method of Offshore Topside Based on an Expert System and Optimization Technique”, Journal of Offshore Mechanics and Arctic Engineering, Vol. 139, No. 2, pp. 1-19, 2017.04.01 file 2017-04-01
68 International Journal Dong-Hoon Jeong, Myung-Il Roh, Seung-Ho Ham, Chan-Young Lee, “Performance Analyses of Naval Ships Based on Engineering Level of Simulation at the Initial Design Stage”, IJNAOE, Vol. 9, No. 4, pp. 446-459, 2017.07.01 file 2017-07-01
67 Domestic Journal 이혜원, 노명일, 함승호, 조로만, 김낙완, 하솔, 우주현, 정우현, 유찬우, “무인수상정의 기뢰 탐지 임무 수행을 위한 통합 시뮬레이션 방법 연구”, 한국CDE학회 논문집, Vol. 22, No. 3, pp. 306-316, 2017.09.01 file 2017-09-01
66 International Journal Dong-Hoon Jeong, Myung-Il Roh, Seung-Ho Ham, “Case Study of Detection and Maneuvering Performance of Naval Ships Using Engagement Simulation of Engineering Level”, Ocean Systems Engineering, Vol. 7, No. 3, pp. 247-273, 2017.09.01 file 2017-09-01
65 International Journal Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, Jin-Wuk Hong, Hong-Rae Lee, "Development and Validation of a Simulation-based Safety Evaluation Program for a Mega Floating Crane", Advances In Engineering Software, Vol. 112, pp. 101-116, 2017.10.01 file 2017-10-01
» International Journal 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, 2017.10.01 file 2017-10-01
63 International Journal Ki-Su Kim, Myung-Il Roh, Sung-Min Lee, Han-Sung Kim, Hyunsik Ahn, "Weight-estimation Method of FPSO Topsides Considering the Work Breakdown Structure", Journal of Offshore Mechanics and Arctic Engineering, Vol. 40, No. 1, pp. 1-10, 2018.02.01 file 2018-02-01
62 International Journal Sun-Kyung Jung, Myung-Il Roh, Ki-Su Kim, "Arrangement Method of a Naval Surface Ship Considering Stability, Operability, and Survivability", Ocean Engineering, Vol. 152, pp. 316-333, 2018.02.23 file 2018-02-23
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