Computational study of the mechanical behavior of steel produced by selective laser melting

O. Zinovieva, A. Zinoviev, V. Ploshikhin, V. Romanova, R. Balokhonov

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    A two-dimensional numerical analysis of the evolution of grain structure observed during selective laser melting and of the mesomechanical behavior of additive manufactured specimens is performed. Cellular automata finite-difference model is developed to simulate the evolution of grain structure. A heat equation is solved with the use of the classical finite-difference scheme. The cellular automata model for the simulation of microstructural development is based on the approach put forward by Rappaz and Gandin. The Goldak double ellipsoid heat source model is adopted to describe the heat input during laser additive manufacturing process. An elastoplastic constitutive model including isotropic strain hardening is used to describe the mechanical response of additive manufactured specimens. A dynamic boundary-value problem in a plane strain formulation is solved numerically with the use of a Wilkins-type finite-difference scheme. The mesoscopic stress-strain state of additive manufactured specimens subjected to the uniaxial tension is analyzed. The focus is on the role of the inhomogeneous material microstructure in the evolution of the stress-strain state. A combined effect of grain structure and boundary conditions is investigated.

    Original languageEnglish
    Title of host publicationAdvanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016
    PublisherAmerican Institute of Physics Inc.
    Volume1783
    ISBN (Electronic)9780735414457
    DOIs
    Publication statusPublished - 10 Nov 2016
    EventInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016 - Tomsk, Russian Federation
    Duration: 19 Sep 201623 Sep 2016

    Conference

    ConferenceInternational Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016
    CountryRussian Federation
    CityTomsk
    Period19.9.1623.9.16

    Fingerprint

    melting
    steels
    cellular automata
    lasers
    strain hardening
    plane strain
    heat sources
    ellipsoids
    boundary value problems
    numerical analysis
    manufacturing
    boundary conditions
    formulations
    heat
    thermodynamics
    microstructure
    simulation

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Zinovieva, O., Zinoviev, A., Ploshikhin, V., Romanova, V., & Balokhonov, R. (2016). Computational study of the mechanical behavior of steel produced by selective laser melting. In Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016 (Vol. 1783). [020235] American Institute of Physics Inc.. https://doi.org/10.1063/1.4966529

    Computational study of the mechanical behavior of steel produced by selective laser melting. / Zinovieva, O.; Zinoviev, A.; Ploshikhin, V.; Romanova, V.; Balokhonov, R.

    Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Vol. 1783 American Institute of Physics Inc., 2016. 020235.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Zinovieva, O, Zinoviev, A, Ploshikhin, V, Romanova, V & Balokhonov, R 2016, Computational study of the mechanical behavior of steel produced by selective laser melting. in Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. vol. 1783, 020235, American Institute of Physics Inc., International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016, Tomsk, Russian Federation, 19.9.16. https://doi.org/10.1063/1.4966529
    Zinovieva O, Zinoviev A, Ploshikhin V, Romanova V, Balokhonov R. Computational study of the mechanical behavior of steel produced by selective laser melting. In Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Vol. 1783. American Institute of Physics Inc. 2016. 020235 https://doi.org/10.1063/1.4966529
    Zinovieva, O. ; Zinoviev, A. ; Ploshikhin, V. ; Romanova, V. ; Balokhonov, R. / Computational study of the mechanical behavior of steel produced by selective laser melting. Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016: Proceedings of the International Conference on Advanced Materials with Hierarchical Structure for New Technologies and Reliable Structures 2016. Vol. 1783 American Institute of Physics Inc., 2016.
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    AU - Balokhonov, R.

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    AB - A two-dimensional numerical analysis of the evolution of grain structure observed during selective laser melting and of the mesomechanical behavior of additive manufactured specimens is performed. Cellular automata finite-difference model is developed to simulate the evolution of grain structure. A heat equation is solved with the use of the classical finite-difference scheme. The cellular automata model for the simulation of microstructural development is based on the approach put forward by Rappaz and Gandin. The Goldak double ellipsoid heat source model is adopted to describe the heat input during laser additive manufacturing process. An elastoplastic constitutive model including isotropic strain hardening is used to describe the mechanical response of additive manufactured specimens. A dynamic boundary-value problem in a plane strain formulation is solved numerically with the use of a Wilkins-type finite-difference scheme. The mesoscopic stress-strain state of additive manufactured specimens subjected to the uniaxial tension is analyzed. The focus is on the role of the inhomogeneous material microstructure in the evolution of the stress-strain state. A combined effect of grain structure and boundary conditions is investigated.

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