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Abstract So far, in the motion analysis, wire ropes have been modeled by incompressible springs which only exert a force when it is extended. Thus, we cannot consider their properties like real wire ropes, such as twisting and bending. Moreover, we have often seen that they generated an unstable motion, and sometimes stiffness problems, especially when the spring coefficient is very large and the mass is not large enough. Therefore, to reflect not only stretching, but also twisting and bending, we adapt the constraint-based wire rope model which discretizes the wire rope as small elements having length and angular constraints. In addition, we use discrete vairational method which is proven to be numerically stable for the case of linear holonomic constraints. As a result, the equation of motion of a floating crane and a heavy load connected by constraint-based wire rope is formulated. Linearized hydrodynamic and hydrostatic forces are considered as the external forces which induce the floating crane motion. It is confirmed that the motions of a floating crane and a heavy load using constraint-based wire rope are stable compared with the motions using incompressible spring.
Publication Date 2014-10-15
Hye-Won Lee, Seung-Ho Ham, Jeong-Woo Hong, Sol Ha, Myung-Il Roh, "Motion Analysis of a Heavy Load Suspended by a Floating Crane Using Constraint-based Wire Rope based on Discrete Variational Method", Proceedings of the 28th Asian-Pacific TEAM(Technical Exchange and Advisory Meeting on Marine Structures) 2014, Istanbul, Turkey, pp. 450-456, 2014.10.13-16

List of Articles
번호 분류 제목 Publication Date
41 International Conference Jeong-Woo Hong, Seung-Ho Ham, Luman Zhao, Xing Li, Sol Ha, Myung-Il Roh, "Offshore Installation of Subsea Equipment Considering Elasticity of the Crane Boom in Harsh Environment", Proceedings of ISOPE 2015, Hawaii, USA, 2014.06.21-26 file 2015-06-23
40 International Conference Nam-Kug Ku, Ara Jo, Sol Ha, Myung-Il Roh, Kyu-Yeul Lee, "Automatic Generation of Equations of Motion for Multibody System in Discrete Event Simulation Framework", Proceedings of INSODE 2011, Istanbul, Turkey, pp. 55-64, 2011.09.02-04 file 2011-09-02
39 International Conference Sol Ha, Seung-Ho Ham, Myung-Il Roh, "Dynamic Route Guidance for Evacuation, Escape and Rescue System at an Offshore Platform Considering Real-time Hazard Avoidance", Proceedings of the 28th Asian-Pacific TEAM 2014, Istanbul, Turkey file 2014-10-15
» International Conference Hye-Won Lee, Seung-Ho Ham, Jeong-Woo Hong, Sol Ha, Myung-Il Roh, "Motion Analysis of a Heavy Load Suspended by a Floating Crane Using Constraint-based Wire Rope based on Discrete Variational Method", Proceedings of the 28th Asian-Pacific TEAM 2014 file 2014-10-15
37 International Conference Myung-Il Roh, Sol Ha, Nam-Kug Ku, Seung-Ho Ham, "Multibody System Dynamics Simulator for Design and Production of Ships and Offshore Plants", Proceedings of the 28th Asian-Pacific TEAM 2014, Istanbul, Turkey, pp. 481-494, 2014.10.13-16 file 2014-10-15
36 International Conference John-Kyu Hwang, Myung-Il Roh, Ju-Hwan Cha, "Design Modification of a Damaged Free-Fall Lifeboat for FPSO through the Free-Fall Test", Proceedings of ISOPE(International Society of Offshore and Polar Engineers) 2014, Busan, Korea, 2014.06.15-20 file 2014-06-17
35 International Conference Nam-Kug Ku, Sol Ha, Ho-Jin Hwang, Ki-Su Kim, Kyu-Yeul Lee, Myung-Il Roh, "Program of Scenario Management for Simulation of Lifting Block Using Crane", Proceedings of ISOPE(International Society of Offshore and Polar Engineers) 2014, Busan, Korea, pp. 838-846, 2014.06.15-20 file 2014-06-17
34 International Conference Sol Ha, Nam-Kug Ku, Myung-Il Roh, Xing Li, "Evacuation, Escape and Rescue EER Analysis of Offshore Plant Based on Human Behavior Model", Proceedings of OMAE 2014, San Francisco, USA, pp. 1-7, 2014.06.08-13 file 2014-06-10
33 International Conference Nam-Kug Ku, Se-Yong Jeong, Myung-Il Roh, Hyun-Kyoung Shin, Sol Ha, Jung-Woo Hong, "Layout Method of a FPSO Using the Optimization Technique", Proceedings of OMAE 2014, San Francisco, USA, pp. 1-11, 2014.06.08-13 file 2014-06-10
32 International Conference Myung-Il Roh, Seong-Ho Seo, Hyun-Kyoung Shin, Nam-Kug Ku, Sol Ha, Ki-Su Kim, "Simplified Model for the Weight Estimation of Floating Offshore Plant Using the Statistical Method", Proceedings of OMAE 2014, San Francisco, USA, pp. 1-8, 2014.06.08-13 file 2014-06-10
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