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Journal of Materials Science

, Volume 37, Issue 4, pp 753–764 | Cite as

Crystal plasticity analysis of earing in deep-drawn OFHC copper cups

  • M. Grujicic
  • S. Batchu
Article

Abstract

The theory of thermally-activated slip is used to derive a crystal-plasticity materials constitutive model for deformation of OFHC copper single crystals. The mechanical response of the polycrystalline material is next determined from the single-crystalline materials constitutive relations using the classical Taylor approximation for apportionment of the deformation gradient between grains. Simulations of the deep drawing of cylindrical cups from as-rolled OFHC-copper blanks are next carried out using an explicit finite element formulation. The results obtained show that the crystallographic texture in as-rolled sheets, which can be accounted for through the use of crystal-plasticity, gives rise to rim-earing in fully-drawn cups. It is further shown that the extent of rim-earing can be greatly reduced by properly modifying the shape of the blank. A procedure is next proposed for optimization of the blank shape.

Keywords

Deformation Gradient Deep Drawing Polycrystalline Material Crystallographic Texture Crystal Plasticity 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Kluwer Academic Publishers 2002

Authors and Affiliations

  • M. Grujicic
    • 1
  • S. Batchu
    • 1
  1. 1.Department of Mechanical EngineeringClemson UniversityClemsonUSA

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