水面衝撃を受ける円筒殻の構造応答解析 Structural Response Analysis of a Cylinder under Water Impact

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抄録

This paper gives one method to estimate the structural response of ship structures under water impact pressure. A series of drop tests of a cylinder with diameter of 312 mm is carried out to measure water impact pressures and strains on the surface of a cylinder. Numerical analyses are carried out for one of the drop tests to reproduce the structural response under measured time history of pressures. In spite of the existance of large local vibrations shown in the numerically estimated strain values, the numerically estimated strain values and the measured values show the same tendency on the whole. This result shows the numericaI method, we employed here, can be used for this purpose. Then we tried to evaluate the effects of maximum impact pressure on the maximum strain value. Two kinds of pressure histograms are used to estimate the maximum strain values. The strain values obtained from the pressure histogram with maximum impact pressure show less effects than that without maximum impact pressure. Finally, we modified the maximum impact pressure value of the measured time history of pressures to be used for numerical analysis. One is with the value of twice as much as measured value and the other is with the mean value of before and after the peak value. The results show that the maximum impact pressure value itself has little effects on the maximum strain value, while the time integration of pressure seems to have more effects than that of maximum impact pressure.

収録刊行物

日本造船学会論文集   [巻号一覧]

日本造船学会論文集 (174), 479-484, 1993-12  [この号の目次]

公益社団法人日本船舶海洋工学会

被引用文献:  3件

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各種コード

  • NII論文ID(NAID) :
    110003862602
  • NII書誌ID(NCID) :
    AN00194094
  • 本文言語コード :
    JPN
  • 資料種別 :
    雑誌論文
  • ISSN :
    05148499
  • NDL 記事登録ID :
    3863767
  • NDL 刊行物分類 :
    NC33(船舶--船体強度)
  • NDL 雑誌分類 :
    ZN24(科学技術--運輸工学--船舶)
  • NDL 請求記号 :
    Z16-537
  • 収録DB :
    CJP引用  NDL  NII-ELS  J-STAGE