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An experimental study on the motion and structural characteristics of an interlinked spars' array

Authors
Kim, Y.Hong, J.P.Kim, Y.S.Kim, H.S.Hong, S.Y.Hong, S.W.
Issue Date
2015
Publisher
International Society of Offshore and Polar Engineers
Keywords
Array of spar-type floaters; Elastic connector; Ocean basin experiment; Wave 1st motion absorber
Citation
Proceedings of the International Offshore and Polar Engineering Conference, v.2015-January, pp 424 - 431
Pages
8
Journal Title
Proceedings of the International Offshore and Polar Engineering Conference
Volume
2015-January
Start Page
424
End Page
431
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/8657
ISSN
1098-6189
Abstract
In this paper, an array of two by two interlinked spars with elastic connectors is studied experimentally in order to identify the motion & structural responses, feasibility of this system. Hywind-OC3 spar is selected as the basic structure and the array is constructed with four floaters with five connectors and five mooring lines. The PVC pipe which outer diameter is 32mm is selected for the experimental model of connectors. Weight and bending stiffness are almost same as the prototype, while the axial stiffness is 5 times higher than that of prototype. Wave 1st motion absorber device is installed at the joint junction of each connector end and floater. Motion responses of floaters are measured by non-contact cameras, while tensions of connector ends, mooring lines are achieved from 1-axis load cell. Strains along the connectors are measured from both FBG sensors and electric resistant strain gauges. These measured results are compared with allowable stresses of ASTM-32 mild steel. Finally, sea-keeping ability and structural reliability of this new conceptual system is summarized. Copyright ? 2015 by the International Society of Offshore and Polar Engineers (ISOPE).
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친환경해양개발연구본부 > 친환경연료추진연구센터 > Journal Articles
해양플랜트연구본부 > Deep Ocean Engineering Research Center > 1. Journal Articles

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Kim, Yun Ho
친환경해양개발연구본부 (친환경연료추진연구센터)
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