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A study is made of the deformation of a round bar of pure power-law hardening material under tension containing a central penny-shaped crack. Several important issues related to fracture mechanics are examined, including the near-tip stress and strain field and its relation to the analogous problem in plane strain.
nonlinear fracture mechanics, penny-shaped crack, J-integral, fully plastic crack problems, elastic-plastic fracture
Researcher, Institute of Mechanics, Chinese Academy of Sciences, Beijing,
Professor of applied mechanics, Division of Applied Sciences, Harvard University, Cambridge,