한국해양대학교

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빙산 충돌에 대한 LNG선 화물창 단열시스템의 안전성 평가

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dc.contributor.author 이재석 -
dc.date.accessioned 2017-02-22T06:16:58Z -
dc.date.available 2017-02-22T06:16:58Z -
dc.date.issued 2010 -
dc.date.submitted 56932-07-09 -
dc.identifier.uri http://kmou.dcollection.net/jsp/common/DcLoOrgPer.jsp?sItemId=000002175112 ko_KR
dc.identifier.uri http://repository.kmou.ac.kr/handle/2014.oak/9269 -
dc.description.abstract 러시아 서부 극지지역에서의 대규모 천연가스(Liquified Natural Gas) 개발과 함께 극지운항 LNG선의 수주가 증가함에 따른 설계 기술력의 확보가 요구되고 있고, 특히 빙산(iceberg)과의 충돌에 대한 LNG선 화물창 단열시스템(CCS -
dc.description.abstract At the time of exploitation of the giant natural gas fields in the Western Arctic regions of Russia, the development of Arctic LNG shipping has been precipitated. There have been demands for the security of design technique of Arctic LNG carrier, especially for the structural safety assessment of the Arctic LNG CCS under the impact of collision with iceberg. To develop iceberg modeling technique and to examine the characteristics of iceberg crushing strength for the more accurate and realistic full scale iceberg-membrane type LNG carrier bow shoulder collision simulations with consideration of surrounding sea water using FSI (Fluid-Structure Interaction) analysis technique, uniaxial compressive ice test specimen simulations in brittle and ductile failure modes were executed and diverse iceberg materials were investigated using LS-DYNA code, such as its failure strain, Young’s modulus, failure stress, failure tensile stress and mesh size. Local zooming analysis of MARK III membrane type LNG CCS according to iceberg sizes and failure strains were performed for the development of its structural safety assessment technique. -
dc.description.abstract Fluid-Structure Interaction) 해석기법을 사용하여 주변유체를 고려한 LNG선과의 선수 어깨부위(bow shoulder) 충돌 시뮬레이션을 수행하였다. 또한 취성 및 연성 파손모드에서의 빙(ice) 시험용 시편의 일축압축 시뮬레이션을 수행하였고, 파단변형률(failure strain), 탄성계수 (Young‘s modulus), 파단응력(failure stress), 파단 인장응력(failure tensile stress) 및 유한요소 크기(mesh size) 등과 같은 다양한 빙산의 물성치에 대한 패러미터 연구를 수행하였다. 구조 안전성 평가기법의 개발을 위하여 빙산의 크기와 파단변형률을 고려한 MARK Ⅲ 멤브레인형 LNG CCS의 Local Zooming Analysis의 기법을 개발하여 적용하였다. -
dc.description.abstract Cargo Containment System) 구조의 안전성 검증이 매우 중요하다. 보다 정확하고 현실적인 빙산 모델링 기술의 개발과 빙산 분쇄강도(crushing strength)의 특성을 구현하기 위해서 LS-DYNA 코드의 유체-구조 연성(FSI -
dc.description.tableofcontents 1. Introduction 1 2. Ice Characteristics 5 3. Ice Mechanics and Simulation 8 4. Collision Scenarios and Simulation Models 17 5. Full-Scale Iceberg-Ship Collision Simulation 24 5.1 Response of collision simulation according to failure strain of iceberg 25 5.2 Response of collision simulation according to Young’s modulus of iceberg 27 5.3 Response of collision simulation according to failure stress of iceberg 29 5.4 Response of collision simulation according to failure tensile stress of iceberg 31 5.5 Response of collision simulation according to mesh size of iceberg 33 6. Structural Safety Assessment of CCS 36 7. Conclusions 43 References 45 -
dc.language eng -
dc.publisher 한국해양대학교 대학원 -
dc.title 빙산 충돌에 대한 LNG선 화물창 단열시스템의 안전성 평가 -
dc.title.alternative Structural Safety Assessment of Cargo Containment System in LNG Carrier under Iceberg Collision -
dc.type Thesis -
dc.date.awarded 2010-02 -
dc.contributor.alternativeName Lee -
dc.contributor.alternativeName Jae Seok -
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해양시스템공학과 > Thesis
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