A crystal plasticity model for describing the anisotropic hardening behavior of steel sheets during strain-path changes

Hwigeon Kim, Frederic Barlat, Yongmoon Lee, Shakil Bin Zaman, Chong Soo Lee, Youngun Jeong (Corresponding Author)

    Research output: Contribution to journalArticleAcademicpeer-review

    3 Citations (Scopus)

    Abstract

    In the present study, a viscoplastic self-consistent crystal plasticity model (VPSC-RGBV), whichaccounts for various microstructural features, including the accumulation and annihilation ofdislocations due to slip activity and latent hardening originated from interactions betweengliding dislocations on different slip planes, is described. The simulation results of the VPSC-RGBV model are compared with those of a macro-mechanical distortional plasticity model, theso-called homogeneous anisotropic hardening (HAH), and experimental data pertaining to metalsundergoing complex loading histories. The differences between the simulated and experimentalresults under non-proportional loading, including 1) the stress-strain curve, 2) instantaneous r-value after strain-path change, and 3) yield surface evolution, are discussed. Finally, potentialimprovements are suggested for VPSC-RGBV model.
    Original languageEnglish
    Pages (from-to)85-106
    Number of pages22
    JournalInternational journal of plasticity
    Volume111
    DOIs
    Publication statusPublished - Dec 2018

    Fingerprint

    Steel sheet
    Plasticity
    Hardening
    Crystals
    Stress-strain curves
    Macros

    Keywords

    • Microstructures
    • Crystal plasticity
    • Constitutive behavior
    • Optimization
    • Strain-path change

    Cite this

    Kim, Hwigeon ; Barlat, Frederic ; Lee, Yongmoon ; Zaman, Shakil Bin ; Lee, Chong Soo ; Jeong, Youngun. / A crystal plasticity model for describing the anisotropic hardening behavior of steel sheets during strain-path changes. In: International journal of plasticity. 2018 ; Vol. 111. pp. 85-106.
    @article{c669b62b0b314496b4fdd6f29fda4819,
    title = "A crystal plasticity model for describing the anisotropic hardening behavior of steel sheets during strain-path changes",
    abstract = "In the present study, a viscoplastic self-consistent crystal plasticity model (VPSC-RGBV), whichaccounts for various microstructural features, including the accumulation and annihilation ofdislocations due to slip activity and latent hardening originated from interactions betweengliding dislocations on different slip planes, is described. The simulation results of the VPSC-RGBV model are compared with those of a macro-mechanical distortional plasticity model, theso-called homogeneous anisotropic hardening (HAH), and experimental data pertaining to metalsundergoing complex loading histories. The differences between the simulated and experimentalresults under non-proportional loading, including 1) the stress-strain curve, 2) instantaneous r-value after strain-path change, and 3) yield surface evolution, are discussed. Finally, potentialimprovements are suggested for VPSC-RGBV model.",
    keywords = "Microstructures, Crystal plasticity, Constitutive behavior, Optimization, Strain-path change",
    author = "Hwigeon Kim and Frederic Barlat and Yongmoon Lee and Zaman, {Shakil Bin} and Lee, {Chong Soo} and Youngun Jeong",
    year = "2018",
    month = "12",
    doi = "10.1016/j.ijplas.2018.07.010",
    language = "English",
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    A crystal plasticity model for describing the anisotropic hardening behavior of steel sheets during strain-path changes. / Kim, Hwigeon; Barlat, Frederic; Lee, Yongmoon; Zaman, Shakil Bin; Lee, Chong Soo; Jeong, Youngun (Corresponding Author).

    In: International journal of plasticity, Vol. 111, 12.2018, p. 85-106.

    Research output: Contribution to journalArticleAcademicpeer-review

    TY - JOUR

    T1 - A crystal plasticity model for describing the anisotropic hardening behavior of steel sheets during strain-path changes

    AU - Kim, Hwigeon

    AU - Barlat, Frederic

    AU - Lee, Yongmoon

    AU - Zaman, Shakil Bin

    AU - Lee, Chong Soo

    AU - Jeong, Youngun

    PY - 2018/12

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    AB - In the present study, a viscoplastic self-consistent crystal plasticity model (VPSC-RGBV), whichaccounts for various microstructural features, including the accumulation and annihilation ofdislocations due to slip activity and latent hardening originated from interactions betweengliding dislocations on different slip planes, is described. The simulation results of the VPSC-RGBV model are compared with those of a macro-mechanical distortional plasticity model, theso-called homogeneous anisotropic hardening (HAH), and experimental data pertaining to metalsundergoing complex loading histories. The differences between the simulated and experimentalresults under non-proportional loading, including 1) the stress-strain curve, 2) instantaneous r-value after strain-path change, and 3) yield surface evolution, are discussed. Finally, potentialimprovements are suggested for VPSC-RGBV model.

    KW - Microstructures

    KW - Crystal plasticity

    KW - Constitutive behavior

    KW - Optimization

    KW - Strain-path change

    U2 - 10.1016/j.ijplas.2018.07.010

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