A computational study of the dynamic deformation and fracture in a coated material

R. R. Balokhonov, S. A. Martynov, V. A. Romanova, E. E. Batukhtina, V. S. Shakhijanov

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

    Abstract

    The deformation and fracture of a coated material with a modified surface subjected to dynamic loading are studied. A mechanical boundary-value problem formulated in terms of plane strain is solved numerically by the finite-difference method. The mechanical responses of a steel substrate and a boride coating are described by models of elastic-plastic media exhibiting isotropic hardening and elastic-brittle fracture, respectively. The geometry of the interface between the coating and the substrate corresponds to that observed experimentally and is explicitly accounted for in the calculations. Numerical experiments are performed using different loading velocities applied to the coating surface. The coating fracture behavior is shown to be essentially dependent on the strain rate. At low dynamic compression rates, crack nucleation in the coating is found to occur solely in local areas experiencing bulk tension and to grow in the direction of load application, whereas mixed tension-compression fracture mechanism is involved at high compressive loading velocities, and cracking basically follows the direction of maximum tangential stresses.

    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

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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  • Cite this

    Balokhonov, R. R., Martynov, S. A., Romanova, V. A., Batukhtina, E. E., & Shakhijanov, V. S. (2016). A computational study of the dynamic deformation and fracture in a coated material. 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). [020009] American Institute of Physics Inc.. https://doi.org/10.1063/1.4966302