エネルギ解放率破壊規準による長さの異なる平行き裂の進展挙動について

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In this paper, we examine the crack extension behavior for a linear elastic body with two parallel cracks. Assuming the isotropy of fracture toughness of the body and judging from the criterion based on the energy release rate, we study the influences of the difference of crack length, the relative position of cracks and the load angle on crack extension behavior. The energy release rate is computed for all the extending crack tips at the onset of crack kinking by using the E-integral which is path independent even for a path containing a kinking crack tip and stationary crack tips.In this paper, we examine the crack extension behavior for a linear elastic body with two parallel cracks. Assuming the isotropy of fracture toughness of the body and judging from the criterion based on the energy release rate, we study the influences of the difference of crack length, the relative position of cracks and the load angle on crack extension behavior. The energy release rate is computed for all the extending crack tips at the onset of crack kinking by using the E-integral which is path independent even for a path containing a kinking crack tip and stationary crack tips.
社団法人日本材料学会の論文
2002-06-15