Water Impact Response of Container Ship Bow Flare by Numerical Method

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  • コンテナ船バウフレア部構造の衝撃荷重応答について
  • コンテナ船バウフレア部構造の衝撃荷重応答について〔含 討論〕
  • コンテナセン バウフレアブ コウゾウ ノ ショウゲキ カジュウ オウトウ ニ ツイテ ガン トウロン

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Abstract

In this paper, idealized water collision analysis is carried out in order to clarify the dominant factor which influences the water impact response of container ship bow flare. It is shown that the pressure which acts on structure is related with theoretical value _<pc>V derived from the compressibility of water. And it is also shown that deviation of the actual pressure from the theoretical value can be explained by using both the ratio of the structural vibration period to the exerting pressure period and the ratio of the structural mass to the impact water mass. Moreover, the calculation for actual container ship under water impact condition is carried out to evaluate of residual deformation of the bow structure. From the comparison of actual residual deformation and calculation result, it is shown that the maximum pressure which acts on the container ship becomes about 16-23% of theoretical value.

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