关键词: 裂纹, 小范围屈服, Hult-McClintock解, 弹塑性场

Abstract: The analysis of the present paper shows that the well-known Hult-McClintock closed form clastic-plastic solution is inappropriate even under ihe conventional small-scale yielding conditions. The expressions expandod from the Hult-McClintock solution arc quite inconsistent with the exact solution ob taineed by the near crack line analysis. This solution is not be able to describe the elastic-plastic feature near the crack surface region. Meanwhile, this solution leads to singularities in the plastic strains, which is physically unacceptable.

Key words: crack, small-scale yielding, Hult-McClintock solution, elastic-plastic field