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Abstract During drilling operation, the motion of a drilling rig should be predicted for the safety assessment under various ocean environmental conditions. However, it is not easy to analyze its motion because an analysis target which includes a BOP (Blow-Out Preventer), risers, and a riser tensioner system is fully coupled and connected each other. The BOP and the bottom of the risers are connected to each other by a ball joint. The top of the risers called a telescopic joint is connected with tension rings of the riser tensioner system by a ball joint. The WRT (wireline riser tensioner) system, which is composed of the tension rings and several hydraulic and pneumatic cylinders, is used to compensate the heave and yaw motion of the drilling rig. Between the telescopic joint and the BOP, several pieces of drilling risers are used to connect them. In this study, we developed a dynamic analysis program called SyMAP (SydLab’s Multiphysics Analysis Program) considering flexible effects of the risers. For this, the concept of multibody dynamics is introduced and used to simulate the motion of multiple bodies connected by various types of joints. And then, a FE (finite element) method based on the ANCF (Absolute Nodal Coordinate Formulation) is adopted to consider flexible effects of the bodies such as the risers. To evaluate the effectiveness and applicability of the developed program, it was applied to the dynamic motion analysis of the drilling rig connected with the risers. As a result, maximum motions of the drilling rig and bending moments of the riser were calculated under ocean environmental conditions according to various significant wave heights and mean wave periods.
Publication Date 2016-09-29

Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, Jung-Woo Hong, "Dynamic Motion Analysis of a Drilling Rig Connected with Flexible Risers based on Flexible Multibody Dynamics", Proceedings of SUTTC(The Society for Underwater Technology Technical Conference) 2016, Beijing, China, 2016.09.26-30


List of Articles
번호 분류 제목 Publication Date
195 Conference Chairman Advanced Ship Tech VIII: Shipbuilding Simulation: ISOPE(International Society of Offshore and Polar Engineers) 2015, Hawaii, USA, 2015.06.21-26 2015-06-25
194 Conference Chairman Strength and Risk, ISOPE(International Society of Offshore and Polar Engineers) 2014, Busan, Korea, 2014.06.15-20 2014-06-17
» International Conference Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, Jung-Woo Hong, "Dynamic Motion Analysis of a Drilling Rig Connected with Flexible Risers based on Flexible Multibody Dynamics", Proceedings of SUTTC 2016, Beijing, China, 2016.09.26-30 file 2016-09-29
192 International Conference Luman Zhao, Myung-Il Roh, Seung-Ho Ham, "Hardware-In-the-Loop Simulation for the Design and Testing of an Active Compensation System on an Offshore Supply Vessel", Proceedings of SUTTC 2016, Beijing, China, 2016.09.26-30 file 2016-09-29
191 Domestic Conference 이혜원, 노명일, 함승호, 홍진욱, 문중수, 심우승, “초대형 해상 크레인의 작업 안정성 평가 프로그램 개발”, 2016년도 한국CAD/CAM학회 하계학술발표회, 부산, pp. 133, 2016.08.25-26 file 2016-08-25
190 Domestic Conference 이승민, 노명일, 김기수, 함승호, “항로, 해상환경, 운동을 고려한 선박의 실감 운항 가시화 기술 연구”, 2016년도 한국CAD/CAM학회 하계학술발표회, 부산, pp. 192, 2016.08.25-26 file 2016-08-25
189 Domestic Conference 김주성, 노명일, 함승호, 김기수, “구획 내 기체의 압축을 고려한 선박의 동적 침수 해석 방법 연구”, 2016년도 한국CAD/CAM학회 하계학술발표회, 부산, pp. 131, 2016.08.25-26 file 2016-08-25
188 International Conference Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, Jeong-Woo Hong, "Multi-physics Simulation Framework for Design and Production of Ships and Offshore Plants", Proceedings of PRADS 2016, Copenhagen, Denmark, 2016.09.04-09.08 file 2016-09-07
187 International Conference Ki-Su Kim, Myung-Il Roh, Seung-Ho Ham, "Ship Route Planning Considering the Effects of Sea State and the Fuel Consumption", Proceedings of PRADS 2016, Copenhagen, Denmark, 2016.09.04-09.08 file 2016-09-07
186 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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