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선체구조의 탄성지지 효과를 고려한 LNG 운반선 방열구조의 슬로싱 충격응답 해석법에 관한 연구Sloshing Impact Response Analysis for Insulation System of LNG CCS Considering Elastic Support Effects of Hull Structures

Other Titles
Sloshing Impact Response Analysis for Insulation System of LNG CCS Considering Elastic Support Effects of Hull Structures
Authors
노인식기민석김성찬이장현김용환
Issue Date
2017
Publisher
한국해양공학회
Keywords
Sloshing impact pressure 슬로싱 충격압력; LNG CCS 액화천연가스 격납시스템; Insulation system 방열구조; Transient dynamic response analysis 과도동적응답해석; Triangular response function 삼각형응답함수; Elastic support effects of hull structure 선체구조의 탄성지지 효과
Citation
한국해양공학회지, v.31, no.5, pp 357 - 363
Pages
7
Journal Title
한국해양공학회지
Volume
31
Number
5
Start Page
357
End Page
363
URI
https://www.kriso.re.kr/sciwatch/handle/2021.sw.kriso/7858
DOI
10.26748/KSOE.2017.10.31.5.357
ISSN
1225-0767
2287-6715
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.
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