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  • 标题:バウフレアスラミングを想定した水面衝撃下での構造応答
  • 本地全文:下载
  • 作者:吉川 孝男 ; 三宅 竜二 ; 吉田 巧
  • 期刊名称:日本船舶海洋工学会論文集
  • 印刷版ISSN:1880-3717
  • 电子版ISSN:1881-1760
  • 出版年度:2017
  • 卷号:26
  • 页码:267-276
  • DOI:10.2534/jjasnaoe.26.267
  • 语种:Japanese
  • 出版社:社団法人 日本船舶海洋工学会
  • 摘要:

    In numerical simulation, the bow flare slamming phenomenon is often treated as the wedge impact to water surface. Up to now, in many numerical simulation, the impact pressure under bow flare slamming has been firstly calculated by CFD in which the structure have been assumed to be rigid, and then the structural response has been calculated utilizing FEA under the pressure obtained by CFD. But, the impact pressure is possible to be influenced by structural rigidity. Therefore, in order to calculate the impact pressure and structural response accurately, the coupling analysis of structure and fluid under the bow flare slamming load must be performed. In this paper, in order to establish the assessment procedure of the structural response under bow flare slamming load, the general purpose FEM software; LS-DYNA, which can simulate the structure-fluid coupling behavior by ALE, is applied for the impact problem of elastic wedge. The parametric calculations are performed to obtain the pressure and the structural response by changing the attacking angle of wedge to water surface. And, the effect of structural rigidity on impact load and structural response are investigated by series of calculation.

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