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

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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.

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Authors and Affiliations

  1. School of Aeronautics and Astronautics, Sichuan University, 610064, Chengdu, China

    Zhiyong Huang, Haomin Wang, Qingyuan Wang & Muhammad Kashif Khan

  2. Faculty of Engineering, Environment and Computing, Coventry University, Priory Street, CV1 5FB, Coventry, UK

    Muhammad Kashif Khan

Authors
  1. Zhiyong Huang
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  2. Haomin Wang
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  3. Qingyuan Wang
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  4. Muhammad Kashif Khan
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Correspondence to Zhiyong Huang.

Additional information

Project supported by the National Natural Science Foundation of China (Nos. 11372201 and 11672196).

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Huang, Z., Wang, H., Wang, Q. et al. Micromechanical Modeling of Elastic-Viscoplastic Behavior of Armco-Fe at High Strain Rate. Acta Mech. Solida Sin. 29, 655–662 (2016). https://doi.org/10.1016/S0894-9166(16)30335-4

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  • DOI: https://doi.org/10.1016/S0894-9166(16)30335-4

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