대한조선학회논문집 (Journal of the Society of Naval Architects of Korea)

  • 제57권4호
  • /
  • Pages.213-220
  • /
  • 2020
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  • 1225-1143(pISSN)
  • /
  • 2287-7355(eISSN)
대한조선학회 (The Society of Naval Architects of Korea)
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외부 정수압을 받는 복수 원통의 연쇄 내파에 관한 실험연구

Tests on the Serial Implosion of Multiple Cylinders Subjected to External Hydrostatic Pressure

  • 태구무타퀴 (부경대학교 조선해양시스템공학과) ;
  • 박상현 (울산대학교 조선해양공학부) ;
  • 손정민 (부경대학교 조선해양시스템공학과) ;
  • 조상래 (울산대학교 조선해양공학부) ;
  • 노인식 (충남대학교 선박해양공학과) ;
  • 이필승 (한국과학기술원 기계공학과) ;
  • 조윤식 (국방과학연구소)
  • Teguh, Muttaqie (Department of Naval Architecture & Marine Systems Engineering, Pukyong National University) ;
  • Park, Sang-Hyun (School of Naval Architecture and Ocean Engineering, University of Ulsan) ;
  • Sohn, Jung Min (Department of Naval Architecture & Marine Systems Engineering, Pukyong National University) ;
  • Cho, Sang-Rai (School of Naval Architecture and Ocean Engineering, University of Ulsan) ;
  • Nho, In Sik (Department of Naval Architecture and Ocean Engineering, Chungnam National University) ;
  • Lee, Phill-Seung (Mechanical Engineering, Korea Advanced Institute of Science and Technology) ;
  • Cho, Yoon Sik (Agency for Defense Development)
  • 투고 : 2020.03.25
  • 심사 : 2020.04.27
  • 발행 : 2020.08.20
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초록

In the present paper, implosion responses of two adjacent cylindrical tubes under external hydrostatic pressure were experimentally investigated. The cylinder models were fabricated of aluminium alloy 6061-T6 commercial tubes. In the experiment, a pair of two-cylinders were placed inside of a support frame in a medium-size pressure chamber, whose design pressure was 6.0MPa. The distance between the two-cylinders was 30 millimeter measured from outer shell at the mid-length. The implosion tests were performed with water and compressed nitrogen gas as the pressurizing media. The ambient static pressure of the chamber and local dynamic pressure near the two-imploded models were measured simultaneously. It was found that the energy released during an implosion from the first, weaker cylinder triggered the instability of the second, stronger cylinders. In other words, the resulting shock wave of the first implosive impact from the weaker cylinder could cause the premature failure of the neighboring stronger cylinders. The non-contact implosion phenomena from the two-cylindrical tube were clearly observed.

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참고문헌

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