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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
50 International Conference Myung-Il Roh, Sol Ha, Nam-Kug Ku, Seung-Ho Ham, "Physics-based Simulation for Production and Installation of Ships and Offshore Plants", Proceedings of ICCAS 2015, Bremen, Germany, Vol. 3, pp. 123-130, 2015.09.29-10.01 file 2015-10-01
49 International Conference Seung-Ho Ham, Myung-Il Roh, Ki-Su Kim, Luman Zhao, Sol Ha, "Integrated Simulation Framework Based on Multibody Dynamics, Realistic Visualization, and Hardware for Shipbuilding Production and Offshore Installation", Proceedings of MARSIM 2015, UK file 2015-09-10
48 International Conference Myung-Il Roh, "Simulation Based Engineering for Ship and Offshore Plant", International Ocean Technology Conference & Expo (IOTCE 2015), Qingdao, China, 2015.09.01-03 file 2015-09-02
47 International Conference Dong-Hoon Jeong, Myung-Il Roh, Seung-Ho Ham, Luman Zhao, Hye-Won Lee, Sol Ha, "Physics-based Simulation of Offshore Installation Operations Considering Ocean Environmental Loads and Operating Conditions", Proceedings of ASEM 2015, Korea file 2015-08-26
46 International Conference Seung-Ho Ham, Jeong-Woo Hong, Ki-Su Kim, Sol Ha, Myung-Il Roh, Ju-Hwan Cha, Nam-Kug Ku, "Multi-physics Framework for Advanced Simulation in Shipbuilding", Proceedings of ISOPE 2015, Hawaii, USA, 2015.06.21-26 file 2015-06-25
45 International Conference Sol Ha, Ki-Su Kim, Seung-Ho Ham, Myung-Il Roh, Nam-Kug Ku, "Co-simulation of Multibody System Dynamics and Moving Particle Semi-implicit Method for Heavy Load Lifting Operations in Shipyards", Proceedings of ISOPE 2015, Hawaii, USA, 2015.06.21-26 file 2015-06-25
44 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
43 International Conference Ki-Su Kim, Jung-Woo Hong, Sol Ha, Seung-Ho Ham, Nam-Kug Ku, Myung-Il Roh, "A Method for Optimal Arrangement Design Based on Expert System and Its Application to Submarine Design", Proceedings of IMDC 2015, Tokyo, Japan, 2015.5.11-14 file 2015-05-13
42 International Conference Sung-Kyoon Kim, Sol Ha, Seun-Ho Ham, Myung-Il Roh, "Optimal Layout Method for Offshore Plant Topside Considering the Safey, Operability and Maintanability", Proceedings of IMDC 2015, Tokyo, Japan, 2015.5.11-14 file 2015-05-12
41 International Conference Seung-Ho Ham, Ju-Sung Kim, Hye-Won Lee, Sol Ha, Myung-Il Roh, "Flooding and Salvage Simulation of a Damaged Floater", Proceedings of IMDC 2015, Tokyo, Japan, 2015.5.11-14 file 2015-05-12
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