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Journal of Materials Science

, Volume 42, Issue 14, pp 5815–5825 | Cite as

A theoretical description of large viscoplastic shear deformation in metals

  • G. Spathis
Article

Abstract

In this work, a new 3-dimensional viscoplastic model based on a previous plasticity theory is presented. The proposed constitutive model anticipates the contribution of the main features of plastic behavior, such as yielding, rate effect, isotropic and kinematic hardening, through a new approximation of the constitutive equation with a viscoplastic term, as well as a new consideration of the functional form of the rate of plastic deformation. A high accuracy simulation of shear experimental data at various rates and temperatures for a variety of materials, as well as the sign inversion of normal stress has been postulated.

Keywords

Plastic Behavior Kinematic Hardening Torsion Test Velocity Gradient Tensor Plastic Transformation 
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

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.School of Applied Mathematical and Physical Sciences, Section of MechanicsNational Technical University of AthensAthensGreece

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