• 제목/요약/키워드: 선각 캐비테이션

검색결과 1건 처리시간 0.014초

캐비테이션을 고려한 부유구조물의 3차원 수중폭발 충격응답 해석 (3-Dimensional Underwater Explosion Shock Response Analysis of a Floating Structure considering Cavitation Effects)

  • 이상갑;권정일;정정훈
    • 대한조선학회논문집
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    • 제40권6호
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    • pp.1-11
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    • 2003
  • For an accurate shock response analysis of a floating structure such as a naval surface ship subjected to an UNDEX(UNDerwater Explosion), the cavitation effects due to reflected wave at free surface and wetted structural surface should be considered. In this study, for the consideration of cavitation effects an effective method using LS-DYNA/USA and its theoretical background were presented. Through the application of the analysis of bulk cavitation phenomena in the free field, it could be confirmed that almost the same results were obtained between LS-DYNA/USA code and the analytical method. for the investigation of cavitation effects from the structural shock response characteristics, three dimensional UNDEX shock response analysis of an idealized ship model was also carried out It could be found that the cavitation Phenomena gave significant effects on the structural shock response characteristics, and especially that the shock loadings calculated at the installed location of shipboard equipment were underestimated in the case of no consideration of the cavitation effects, which might cause the severe mistake in its shock-resistance design.