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  • 标题:平板の貫通クラックの応力拡大係数の3次元解析
  • 本地全文:下载
  • 作者:角 洋一 ; 山本 善之
  • 期刊名称:日本造船学会論文集
  • 印刷版ISSN:0514-8499
  • 电子版ISSN:1884-2070
  • 出版年度:1975
  • 卷号:1975
  • 期号:138
  • 页码:453-460
  • DOI:10.2534/jjasnaoe1968.1975.138_453
  • 出版社:The Japan Society of Naval Architects and Ocean Engineers
  • 摘要:

    The variation of stress intensity factors along the crack front of a crack penetrating through the thickness of a plate is analysed by the finite-element method on the basis of concept of the superposition of analytic and finite-element solutions, which has been successfully employed for two-dimensional and axi-symmetric three-dimensional crack problems. In three-dimensional problems, difficulties exist in finding analytic solutions of the governing differential equations, which have the singularity for cracks. In the present paper the authors propose a method of constructing appropriate series of analytic solution which does not satisfy the governing equation but can easily approximate the variation of stress intensity factors. As a numerical example the stress intensity factor of a compact tension specimen is calculated. It is shown that the stress intensity factor takes the maximum on the middle-surface, which is 7-15% higher than the two-dimensional value.

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