As it is well known, the equations describing the “classical plastic” model are essentially time independent. This way to describe “plasticity” seems to go back to Barré de Saint-Venant in 1870. In the present paper one discusses the way in which with a rate-type constitutive equation one can describe various phenomena which have been observed to occur during plastic deformation, and which cannot be described with the classical model.


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Copyright information

© Springer-Verlag Berlin Heidelberg 1975

Authors and Affiliations

  • N. Cristescu
    • 1
  1. 1.Mathematical InstituteUniversity of BucharestBucharest 12Romania

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