Skip to content
Extra Form
Abstract The block erection operations in the shipyards generally include block lifting, transporting, turn-over, and lowering procedure. During the operation, there are potential risks such as interferences with wire ropes, overweight, etc., which can lead to serious accidents. To check such risks in advance, the physics-based simulations are often required before the actual operation. For this, detailed modeling of the equipment and the operation is necessary to reflect the actual situation accurately, which is impossible with conventional modeling methods. Meanwhile, in the actual operation, the position and the orientation of the block should also be precisely controlled to avoid any risks. However, the actual operations are performed manually by the operator, and the cranes used for the erection of the block consist of complex equipment, which makes them difficult to control.
In this study, the detailed modeling of the operation situation and the equipment are introduced for accurate simulation. Then, the control method of the crane is suggested for accurate and efficient control. Firstly, the block turn-over operation by one offshore floating crane (simply, floating crane) and two crawler cranes is simulated considering the interferences between wire ropes and the block. For this, the interaction model between wire rope and the block including contact and friction is suggested. Then, the contact forces exerted on the block are calculated. Secondly, the block lifting by the floating crane is analyzed considering the coupling motion of the floating crane and the mooring system. The interaction among the floating crane, the mooring line, and the seabed is introduced under the various sea condition. Lastly, the control of the floating crane is performed for block lifting, transporting, and turn-over operation. As the floating crane consists of complicated equipment such as booms, equalizers and wire ropes, the control theory of the underactuated mechanical system is adopted. To evaluate the effectiveness and applicability of the proposed method, it was applied to the dynamic analysis of various kinds of block erection operations by using the floating crane. As a result, the proposed method could reflect the actual operation situation properly, and the block was controlled to the desired trajectory.
Publication Date 2020-08-05

Hye-Won Lee, Myung-Il Roh, Seung-Ho Ham, "Method for the Accurate and Automatic Operation of Offshore Floating Cranes for the Block Erection in Shipyards", Proceedings of OMAE(International Conference on Ocean, Offshore and Arctic Engineering) 2020, Held in Virtual Conference, 2020.08.03-07


  1. Ki-Su Kim, Myung-Il Roh, Sung-Min Lee, "Toward a Robust Optimization Method for Ship Route Planning Considering Cost and Safety Aspect", Proceedings of ACDDE 2017, Zhangjiajie, China

  2. 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

  3. Ki-Su Kim, Myung-Il Roh, Sung-Kyoon Kim, "An Arrangement Design Framework for Ships and Offshore Plants Based on Expert System and Optimization Technique", Proceedings of OMAE 2016, Busan, Korea, pp. 1-5, 2016.06.19-24

  4. Ki-Su Kim, Myung-Il Roh, Seung-Min Lee, "Flooding Analysis Based on PBD (Position Based Dynamics) for Ships and Offshore Structures", Proceedings of ISOPE 2018, Sapporo, Japan, pp. 955-957, 2018.06.10-15

  5. Ki-Su Kim, Myung-Il Roh, Seung-Ho Ham, Sol Ha, "Evacuation Analysis of Passenger Ships Considering Intermediate Flooding", Proceedings of International Symposium on PRADS 2022, Dubrovnik, Croatia, pp. 628-632, 2022.10.09-13

  6. 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

  7. Ki-Su Kim, Myung-Il Roh, Ju-Sung Kim, "A Method of Dynamic Flooding Analysis in Time Domain for the Compartment Arrangement Design of a Ship", Proceedings of ISOPE 2017, San Francisco, USA, pp. 862-866, 2017.06.25-30

  8. Ki-Su Kim, Myung-Il Roh, "Optimization of the Arrangement Design of a Ship Considering the Multiple Performance", Proceedings of ACSMO 2020, Seoul, Korea, pp. 167, 2020.11.23-25

  9. Ki-Su Kim, Myung-Il Roh, "Optimal Arrangement Method of a Ship Considering the Performance against Flooding", Proceedings of PRADS 2019, Yokohama, Japan, 2019.09.22-26

  10. 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

Board Pagination Prev 1 ... 40 41 42 43 44 45 46 47 48 49 ... 51 Next
/ 51

Powered by Xpress Engine / Designed by Sketchbook

sketchbook5, 스케치북5

sketchbook5, 스케치북5

나눔글꼴 설치 안내


이 PC에는 나눔글꼴이 설치되어 있지 않습니다.

이 사이트를 나눔글꼴로 보기 위해서는
나눔글꼴을 설치해야 합니다.

설치 취소