Micromechanical Modeling of Elastic-Viscoplastic Behavior of Armco-Fe at High Strain Rate

Z. Huang, H. Wang, Q. Wang, Muhammad Kashif Khan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Heterogeneous dynamical stress-strain response of Armco-Fe was investigated at high strain rates through the Split Hopkinson Pressure Bar (SHPB) testing. It was found that the viscoplastic deformation in BCC ferrite grains is affected by the strain rate. Thermal softening and variation in crystal orientations under high-strain-rate loading were used in the elastic-viscoplastic modeling. The micromechanical analysis with self-consistent transition and homogenization was used for estimation of the global impact response of the material. The results from modeling were found in good agreement with the experimental data.
Original languageEnglish
Pages (from-to)655-662
JournalActa Mechanica Solida Sinica
Volume29
Issue number6
DOIs
Publication statusPublished - 29 Dec 2016

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Keywords

  • Armco-Fe
  • high strain rate
  • visco-plastic deformation
  • self consistent
  • SHPB

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