A new formulation for the elastic-viscoplastic lower bound and intermediate modeling for polycrystalline plasticity

Said Ahzi, S. M'Guil, A. Agah-Tehrani

Research output: Contribution to journalArticle

15 Citations (Scopus)


The aim of this work is to propose a simple intermediate model for large elastic-viscoplastic deformations that could predict the copper and brass components as well as the texture transition. We first propose a new formulation of the Sachs (static) model as extension of this model to large elastic-viscoplastic deformations. In light of state variable based modeling, we introduced a one parameter weight function, 0 < φ < 1, to formulate a simple intermediate model. This proposed model combines, in a simple way, both Taylor and Sachs assumptions. In the applications, we concentrate on the plane strain compression test. The results from these models are shown discussed.

Original languageEnglish
Pages (from-to)463-468
Number of pages6
JournalMaterials Science Forum
Issue numberI
Publication statusPublished - 2002
Externally publishedYes



  • Brass Pattern
  • Copper Pattern
  • Elastic-Viscoplastic Deformation
  • Sachs Model
  • Taylor Model

ASJC Scopus subject areas

  • Materials Science(all)

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