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Abstract Ships and offshore plants are divided into several blocks and then erected by using one or more cranes on the dock through the operation called block erection. Because the blocks contain several outfitting installed before the erection, collision during the operation can occur and this is one of main reasons to delay the production of the ships and offshore plants. Moreover, in case of ships including internal tanks such as LPG carrier or LNG carrier, the tanks should be erected inside the hull structure which can cause collision between them during the erection. Therefore, the collision should be carefully checked before the actual operation. Even though the collision is checked statically, the unexpected collision can occur due to various external or environmental loads. Thus, collision analysis based on multibody system dynamics is performed in this study. Generally, there are two methods for the collision analysis; the impulse response method and the force-based method. Traditionally, the impulse response method has been commonly used in the collision analysis. However, it cannot be used with a multibody system because the method calculates the velocity of a single body directly. Furthermore, collision forces between collided objects cannot be calculated in the impulse response method. Therefore, in this study, the force-based method is applied to consider various collisions in the multibody system and to calculate collision forces. To evaluate the effectiveness of the method, it is applied to the erection of a LPG tank of a LPG carrier by using a floating crane. As a result, it can be seen that collisions between the tank and the hull structure during the erection are detected and collision forces are accurately calculated.
Publication Date 2016-10-12

Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, “Dynamics-based Collision Analysis for Block Erection in Shipyard”, Proceedings of the 30th Asian-Pacific TEAM(Technical Exchange and Advisory Meeting on Marine Structures) 2016, Mokpo, Korea, pp. 270-273, 2016.10.10-13


List of Articles
번호 분류 제목 Publication Date
71 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
70 International Conference Ju-Sung Kim, Myung-Il Roh, Seung-Ho Ham, Ki-Su Kim, "Dynamic Method for Flooding Simulation of a Damaged Floater Considering Ocean Environmental Loads", Proceedings of the 30th Asian-Pacific TEAM 2016, Mokpo, Korea, 2016.10.10-13 file 2016-10-12
» International Conference Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Dynamics-based Collision Analysis for Block Erection in Shipyard", Proceedings of the 30th Asian-Pacific TEAM 2016, Mokpo, Korea, 2016.10.10-13 file 2016-10-12
68 International Conference Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, "Dynamic Analysis for Design and Production in Shipbuilding", Proceedings of ACDDE 2016, Jeju, Korea, 2016.10.25-28 file 2016-10-27
67 International Conference Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Collision Analysis of Block Erection by a Floating Crane", Proceedings of ACDDE 2016, Jeju, Korea, 2016.10.25-28 file 2016-10-27
66 International Conference Sung-Min Lee, Myung-Il Roh, Ki-Su Kim, "Determination of Economical Ship Route Using Simultaneous Optimization Method", Proceedings of ACDDE 2016, Jeju, Korea, 2016.10.25-28 file 2016-10-27
65 International Conference Ki-Su Kim, Myung-Il Roh, Sung-Min Lee, "A Simultaneous Optimization Method of the Direction and Speed for Ship Route Planning", Proceedings of Smart Ship Technology 2017, London, England, 2017.01.24-25 file 2017-01-25
64 International Conference Seung-Min Lee, Myung-Il Roh, Ki-Su Kim, Seung-Ho Ham, "Optimization of Tugboats Operation for Transporting an Offshore Floating Crane in Environmental Disturbance", International Conference on Mechanical Design and Engineering, 2017.01.20-22 file 2017-01-21
63 International Conference Seung-Ho Ham, Myung-Il Roh, Hye-Won Lee, "Collision Analysis of the Subsea Equipment on the Offshore Supply Vessel Using Non-Interpenetration Constraints", International Conference on Mechanical Design and Engineering, HongKong, China, 2017.01.20-22 file 2017-01-21
62 International Conference Seung-Ho Ham, Myung-Il Roh, "Multibody Formulation of a Load-out Problem of a Mega Block Using Modular Transporters in Shipbuilding Industry", Proceedings of the 8th ECCOMAS Thematic Conference on Multibody Dynamics, Prague, Czech, 2017.06.19-22 file 2017-06-19
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