Structural defects and dynamic properties of metals

Alexander E. Mayer, Elijah N. Borodin, Polina N. Mayer

    Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

    Abstract

    A computational plasticity model with accounting of coupled evolution of the dislocations, twins and grain boundaries in metals under the dynamic loading is presented. The model is based on our previous results for the dislocation plasticity and the grain boundary sliding, but generalizes them and accounts twins in addition. It includes equations of the mechanics of continua for elastic-plastic medium, where the plastic deformation tensor is determined as a result of the structural defects evolution in the materiAl. The model is self-consistent and allows determining of mechanical properties in wide range of strain rates and thermodynamic conditions as well as modification of the defect subsystems. The equations and parameters, its numerical implementation and some of obtained results are presented.

    Original languageEnglish
    Title of host publication11th World Congress on Computational Mechanics, WCCM 2014, 5th European Conference on Computational Mechanics, ECCM 2014 and 6th European Conference on Computational Fluid Dynamics, ECFD 2014
    EditorsAntonio Huerta, Eugenio Onate, Xavier Oliver
    PublisherInternational Center for Numerical Methods in Engineering (CIMNE)
    Pages2793-2803
    Number of pages11
    ISBN (Electronic)9788494284472
    Publication statusPublished - 1 Jan 2014
    EventJoint 11th World Congress on Computational Mechanics, WCCM 2014, the 5th European Conference on Computational Mechanics, ECCM 2014 and the 6th European Conference on Computational Fluid Dynamics, ECFD 2014 - Barcelona, Spain
    Duration: 20 Jul 201425 Jul 2014

    Conference

    ConferenceJoint 11th World Congress on Computational Mechanics, WCCM 2014, the 5th European Conference on Computational Mechanics, ECCM 2014 and the 6th European Conference on Computational Fluid Dynamics, ECFD 2014
    Country/TerritorySpain
    CityBarcelona
    Period20/07/1425/07/14

    Keywords

    • Dislocations
    • Dynamical problems
    • Grain boundaries
    • Plasticity
    • Twins

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