The Size Effect on the Brittle Fracture Toughness under the Large Scale Yielding

スポンサーリンク

概要

• 論文の詳細を見る

• The object of this paper is to evaluate the size effect on the brittle fracture toughness of mild steel, SS41, accompanied by a large scale plastic deformation ahead of the crack tip. Three point bend specimens were used in this test. The relations between load and crack tip opening displacement (COD), Φ_0, were obtained for each of the specimens ranging in temperature from the room temperature to -150℃. It became clear that the critical COD, Φ_<0c>, at which a brittle fracture occurred was dependent on only the specimen thickness and was not so much affected by the other dimensions of specimen in this study. In addition, the authors proposed the β-value as the constraint coefficient due to the plate thickness, and tried to apply it in the Finite Element Method (FEM) program. It was expected that the thickness effect on the specimen deformation such as the COD, Φ_0, was able to be treated as one of two dimensional problems using the plane problem FEM incorporating the β-value.

• 社団法人溶接学会の論文
• 1981-04-01

著者

• Kawano Shunichi

  Yamaguchi University

• NAGAI Kinichi

  Hiroshima University

• SHIMIZU Shigetoshi

  Yamaguchi University

• IWATA Mitsumasa

  Hiroshima University

関連論文

• The Size Effect on the Brittle Fracture Toughness under the Large Scale Yielding

スポンサーリンク