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Acta Mechanica Solida Sinica

, Volume 29, Issue 6, pp 655–662 | Cite as

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

  • Zhiyong Huang
  • Haomin Wang
  • Qingyuan Wang
  • Muhammad Kashif Khan
Article

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.

Key Words

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

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2016

Authors and Affiliations

  • Zhiyong Huang
    • 1
  • Haomin Wang
    • 1
  • Qingyuan Wang
    • 1
  • Muhammad Kashif Khan
    • 1
    • 2
  1. 1.School of Aeronautics and AstronauticsSichuan UniversityChengduChina
  2. 2.Faculty of Engineering, Environment and ComputingCoventry UniversityCoventryUK

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