A two-level model for description of elastoviscoplastic deformation of hcp metals
DOI:
https://doi.org/10.7242/1999-6691/2012.5.1.6Keywords:
two-scale elastoviscoplastic model, lattice rotation, hcp metals, twinningAbstract
A two-level model for describing deformation processes that take place in hcp metals is considered. At the macro-scale, a representative volume element of polycrystal is studied. At the mesoscale, the equations of physical theory of elastoviscoplasticity modified to take into account the effect of temperature are used. An algorithm to implement this model is proposed. The results obtained in the solution of the uniaxial tension problem are analyzed. The identification and verification of the model are carried out. The numerical results are in satisfactory agreement with the experimental data.
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