Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Study on Estimation of Local Ice Pressures Considering Contact Area with Sea Ice

해빙과의 접촉 면적을 고려한 국부 빙압력 추정 연구

  • Kim, Tae-Wook (Dept. of Ocean System Eng., Graduate School, Gyeonsang National University) ;
  • Lee, Tak-Kee (Dept. of Naval Archi. & Ocean Eng., Gyeonsang National University, Institute of Marine Industry)
  • 김태욱 (경상대학교 대학원, 해양시스템공학과) ;
  • 이탁기 (경상대학교 조선해양공학과, 해양산업연구소)
  • Received : 2014.06.24
  • Accepted : 2014.10.24
  • Published : 2014.10.31
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Abstract

Ice loads may be conveniently categorized as local ice loads and global ice loads. Local ice loads are often defined as ice pressures acting on local areas of shell plates and stiffeners. Therefore, local ice loads are defined in all ice class rules. However, directly measuring the local ice pressure using the actual ice class vessel is a very difficult task because appropriate instruments for direct measurement must be installed on the outer hull, and they are easily damaged by direct ice contacts/impacts. This paper focuses on the estimation of the local ice pressure using the data obtained from icebreaking tests in the Arctic sea in 2010 using the Korean icebreaking research vessel (IBRV) ARAON. When she contacted the sea ice, the local deformation of the side shell was measured by the strain gauges attached to the inside of the shell. Simultaneously, the contact area between the side shell and sea ice is investigated by analyzing the distribution of the measured strain data. Finally, the ice pressures for different contact areas are estimated by performing a structural analysis.

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References

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