In Part I [1] of this paper, Gurson’s mixed hardening plasticity model with strain and stress-controlled nucleations, was used in a large deformation finite element program to study the plastic flow and damage in the uniaxial compression of cylinders under sticking friction. Due to low stress triaxiality at the bulge of the cylinders, it was found that localization may occur before void coalescence. In this paper, necessary conditions of localizations are analyzed for the axial compression of porous cylinders under sticking friction. Shear band type of localization with a normal mode of fracture has been predicted for the majority of the cases studied. Various existing localization conditions and fracture criteria are assessed using the results from the simulation. The maximum shear stress at failure is approximately constant and a constant critical damage can not be found.
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April 1996
Technical Papers
A Finite-Element Work-Hardening Plasticity Model of the Uniaxial Compression and Subsequent Failure of Porous Cylinders Including Effects of Void Nucleation and Growth—Part II: Localization and Fracture Criteria
J. H. Lee
Department of Mechanical Engineering, University of Alaska Fairbanks, AK 99775
Y. Zhang
Department of Mechanical Engineering, University of Alaska Fairbanks, AK 99775
J. Eng. Mater. Technol. Apr 1996, 118(2): 169-178 (10 pages)
Published Online: April 1, 1996
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Received:
June 10, 1993
Online:
November 27, 2007
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Lee, J. H., and Zhang, Y. (April 1, 1996). "A Finite-Element Work-Hardening Plasticity Model of the Uniaxial Compression and Subsequent Failure of Porous Cylinders Including Effects of Void Nucleation and Growth—Part II: Localization and Fracture Criteria." ASME. J. Eng. Mater. Technol. April 1996; 118(2): 169–178. https://doi.org/10.1115/1.2804883
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