Journal of Ocean Engineering and Technology (한국해양공학회지)

Korean Society of Ocean Engineers (한국해양공학회)
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Sloshing Impact Response Analysis for Insulation System of LNG CCS Considering Elastic Support Effects of Hull Structures

선체구조의 탄성지지 효과를 고려한 LNG 운반선 방열구조의 슬로싱 충격응답 해석법에 관한 연구

  • Nho, In Sik (Department of Naval Architecture & Ocean Engineering, Chungnam National University) ;
  • Ki, Min-Seok (Korea Research Institute of Ships & Ocean Engineering) ;
  • Kim, Sung-Chan (Department of Naval Architecture & Ocean Engineering, Inha Technical College) ;
  • Lee, Jang Hyun (Department of Naval Architecture & Ocean Engineering, Inha University) ;
  • Kim, Yonghwan (Department of Naval Architecture & Ocean Engineering, Seoul National University)
  • 노인식 (충남대학교 선박해양공학과) ;
  • 기민석 (선박해양플랜트연구소) ;
  • 김성찬 (인하공업전문대학 조선해양과) ;
  • 이장현 (인하대학교 조선해양공학과) ;
  • 김용환 (서울대학교 조선해양공학과)
  • Received : 2017.04.04
  • Accepted : 2017.10.19
  • Published : 2017.10.31
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Abstract

The sloshing pressure acting on a membrane-type LNG CCS is a typical irregular impact load, and the structural response of a tank system induced by sloshing also shows very complex behavior, including fluid structure interaction. Therefore, it is not easy to accurately estimate the sloshing impact pressures and resulting structural response. Moreover, a huge time consuming process to deal with the enormous pressure data obtained during a model tank test and the following structural analysis would be inevitable. To reduce the computation time for structural analysis, in this study, a rational structural modeling strategy was considered, and a simplified scheme to analyze the dynamic structural responses of an LNG CCS was introduced, which was based on the concept of the linear combination of the triangular response functions obtained by a transient response analysis of structures under unit triangular impact pressure. A structural analysis of a real Mark III membrane type insulation system under the sloshing impact pressure time histories obtained by model tests was performed using the various proposed structural models and simplified analysis scheme. The results were investigated in detail, including the elastic support effects of the hull structure.

Keywords

References

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