Plastic strain localization in an extreme dynamic tension test of steel sheet in the framework of fractional viscoplasticity
[ 1 ] Instytut Analizy Konstrukcji, Wydział Inżynierii Lądowej i Transportu, Politechnika Poznańska | [ D ] phd student | [ P ] employee
2020
scientific article
english
- fractional viscoplasticity
- strain localization
- extreme dynamics
EN The paper considers the plastic strain localization phenomenon in the framework of the fractional viscoplasticity. As an illustrative example, full spatial modelling of a tension test under extreme dynamic conditions is presented. The modelling assumes adiabatic conditions including isotropic work hardening-softening effects induced by plastic strains, temperature and damage (scalar). Special attention is paid to additional, compared to the classical Perzyna viscoplasticity, model parameters resulting from application of fractional calculus in the evolution law for plastic strains. It is shown that the proposed formulation allows for high flexibility of modelling of the localization zone with a limited number of model parameters.
29.11.2019
106522-1 - 106522-11
article number: 106522
140
140
4,442