9. Load Carrying Capacity of Tubular Members with Crack Damage under Pure Bending

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概要

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• Load carrying capacity of a tubular member with a circumferential through-thickness crack is investigated. A series of pure bending tests is carried out. Based on the experimental results, a generation phase analysis is performed with the finite element method, in which both material and geometrical nonlinearities are taken into account. An application phase analysis is also performed employing the J-integral and the Crack Opening Angle (COA) as fracture parameters which rule the initiation of a crack and the continuation of the crack growth, respectively. It has been found that: (1) Load carrying capacity and rigidity decrease due to the presence of a crack. (2) Ultimate strength is attained after some amount of crack growth. (3) Higher ultimate strength is attained with higher critical values of J-integral and COA. (4) The lower the critical value of COA is, the more decrease in load carrying capacity is observed.

• 社団法人日本船舶海洋工学会の論文

著者

• Zhao Yao

  Structural Engineering Course Graduate School Of Hiroshima University

• Yao Tetsuya

  Hiroshima University

• FUJIKUBO Masahiko

  Hiroshima University

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