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An experimental study on the mating operation of a large topside module on a FLNG

Authors
Ha, Y.J.Nam, B.W.Jung, D.W.Hong, S.Y.Kim, H.J.
Issue Date
2016
Publisher
International Society of Offshore and Polar Engineers
Keywords
Dynamic amplification factor; LMU's force; Load transfer stage; Mating operation; RAO; Wire's tension
Citation
Proceedings of the 12th ISOPE Pacific-Asia Offshore Mechanics Symposium, PACOMS 2016, pp 317 - 321
Pages
5
Journal Title
Proceedings of the 12th ISOPE Pacific-Asia Offshore Mechanics Symposium, PACOMS 2016
Start Page
317
End Page
321
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/8566
ISSN
0000-0000
Abstract
In this study, a series of model tests were performed for mating operations of a heavy topside module on a FLNG. Three experimental models, a floating crane vessel, a FLNG and a topside module, were introduced and the winch system with the four crane wires were utilized. To measure the dynamic forces between the topside module and mating deck, four leg mating units(LMUs) were modelled as linear compressive springs. The model tests were carried out at four mating stages. Both regular and irregular wave tests were performed. First, the motions of the lifted topside module were presented from the regular wave tests. Then, the transfer functions of the crane wire tensions and LMU forces are suggested at four different load transfer stages. Finally discussion is made on the dynamic responses of the wire tensions and LMU forces in irregular waves. Copyright ? 2016 by the International Society of Offshore and Polar Engineers.
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