A self-consistent model of rate-dependent plasticity of polycrystals

R. Kiryk; H. Petryk

A self-consistent model of rate-dependent plasticity of polycrystals

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R. Kiryk Institute of Fundamental Technological Research, Polish Academy of Sciences, Poland
H. Petryk Institute of Fundamental Technological Research, Polish Academy of Sciences, Poland

Abstract

The Hill-Hutchinson self-consistent scheme for polycrystals is extended to rate-dependent plasticity with work-hardening. A computational version of the model requires three material parameters for a single crystal which are approximately identified from the experimental stress-plastic strain curve for a polycrystalline material. Contours of the macroscopic plastic potential are calculated after different plastic prestrains in uniaxial tension.

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A self-consistent model of rate-dependent plasticity of polycrystals

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