The influence of the parametric scalar factor in the viscoplastic power law (the Hutchinson equation) for intragranular shear rates of edge dislocation slip systems on the material response of multilevel constitutive models is considered. Based on an analysis of existing models, three ways of determining this parameter are found. For each of them, advantages and disadvantages are determined based on the results of a series of computational experiments.
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Vshivkova, A.A., Shveykin, A.I. Analysis of the Influence of the Parametric Scalar Factor in the Viscoplastic Equation for Determining Intragranular Shear Rates on the Response in Multilevel Constitutive Models of Metals. Russ Phys J 66, 835–843 (2023). https://doi.org/10.1007/s11182-023-03012-0
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DOI: https://doi.org/10.1007/s11182-023-03012-0