構造用鋼材の延性き裂発生条件

書誌事項

タイトル別名
  • THE CRITERION FOR DUCTILE CRACK INITIATION IN STRUCTUAL STEELS
  • コウゾウヨウ コウザイ ノ エンセイ キレツ ハッセイ ジョウケン

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抄録

Recently, high strength steel and cold-formed steel are used on structural members, which have poor capacity for plastic strain. So there is a possibility that deformation capacity at the beam end is limited by not local buckling but brittle fracture. Because brittle fracture is brought on ductile crack, saving the occurrence of it lead to preventing brittle fracture. Purposes of this paper are to understand the initiation of ductile crack at the-notch tip by experiment, and to clarify the distribution of stress and strain at the notch section by FEM analysis. As a result, the criterion for ductile crack initiation is proposed.

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