Journal of Navigation and Port Research (한국항해항만학회지)

Korean Institute of Navigation and Port Research (한국항해항만학회)
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Profile Analysis on Signal Measured Local Ice Load during Icebreaking in Arctic Sea

북극해에서의 쇄빙시 국부 빙하중 계측 신호에 대한 파형 분석

  • Jeon, Young-Ju (Graduate school of Gyeongsang National University) ;
  • Rim, Chae-Whan (Korea Institute of Machinery & Materials) ;
  • Lee, Tak-Kee (Dept. of Naval Archi. & Ocean Eng., Gyeongsang National Univ., Institute of Marine Industry)
  • 전영주 (경상대학교 대학원) ;
  • 임채환 (한국기계연구원) ;
  • 이탁기 (경상대학교 조선해양공학과, 해양산업연구소)
  • Received : 2013.01.31
  • Accepted : 2013.04.12
  • Published : 2013.04.30
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Abstract

The aim of this study is to investigate the characteristics on the profile of local ice load acting on side shell of port side in bow part due to broken ice during icebreaking of ships in ice covered waters. The first Korean icebreaking research vessel 'ARAON' had a sea ice field trial in the Arctic Sea during early August, 2010, and the signals due to local ice impact measured from several strain gauges installed at bow part were gathered. It is known that these data with structural response characteristics due to local ice impact have some different characteristics with a typical hydraulic impact pressure - time history. In this study, the time history on the measured signals was analyzed and the characteristic values were presented using non-dimensional parameters.

본 연구의 목적은 빙해역을 운항하는 선박의 쇄빙시 깨진 해빙에 의해 선수부 좌현 외판에 작용하는 국부 빙하중을 계측한 신호의 특성을 조사하는 것이다. 한국 최초의 쇄빙연구선인 아라온호를 이용하여 2010년 8월초 북극해에서 실선 시험을 수행하여 선수부에 설치된 변형률 게이지로부터 국부적인 빙하중에 의한 신호를 계측하였다. 국부적인 빙하중에 의한 구조 응답 특성을 반영한 계측 신호는 전형적인 유체 충격압에 대한 하중-시간 이력과 다소 다른 특성을 갖는 것도 있음이 파악되었다. 본 연구에서는 계측 신호에 대한 시간 이력을 분석하고, 무차원화된 특성값들로 나타내었다.

Keywords

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