留言板

尊敬的读者、作者、审稿人, 关于本刊的投稿、审稿、编辑和出版的任何问题, 您可以本页添加留言。我们将尽快给您答复。谢谢您的支持!

姓名
邮箱
手机号码
标题
留言内容
验证码
Volume 13 Issue 4
Aug.  2006
数据统计

分享

计量
  • 文章访问数:  212
  • HTML全文浏览量:  52
  • PDF下载量:  14
  • 被引次数: 0
Xuebin Wang, Adiabatic shear localization evolution for steel based on the Johnson-Cook model and gradient-dependent plasticity, J. Univ. Sci. Technol. Beijing, 13(2006), No. 4, pp. 313-318. https://doi.org/10.1016/S1005-8850(06)60065-0
Cite this article as:
Xuebin Wang, Adiabatic shear localization evolution for steel based on the Johnson-Cook model and gradient-dependent plasticity, J. Univ. Sci. Technol. Beijing, 13(2006), No. 4, pp. 313-318. https://doi.org/10.1016/S1005-8850(06)60065-0
引用本文 PDF XML SpringerLink
Materials

Adiabatic shear localization evolution for steel based on the Johnson-Cook model and gradient-dependent plasticity

  • 通讯作者:

    Xuebin Wang    E-mail: wxbbb@263.net

  • Gradient-dependent plasticity is introduced into the phenomenological Johnson-Cook model to study the effects of strain-hardening, strain rate sensitivity, thermal-softening, and microstructure. The microstructural effect (interactions and interplay among microstructures) due to heterogeneity of texture plays an important role in the process of development or evolution of an adiabatic shear band with a certain thickness depending on the grain diameter. The distributed plastic shear strain and deformation in the shear band are derived and depend on the critical plastic shear strain corresponding to the peak flow shear stress, the coordinate or position, the internal length parameter, and the average plastic shear strain or the flow shear stress. The critical plastic shear strain, the distributed plastic shear strain, and deformation in the shear band are numerically predicted for a kind of steel deformed at a constant shear strain rate. Beyond the peak shear stress, the local plastic shear strain in the shear band is highly nonuniform and the local plastic shear deformation in the band is highly nonlinear. Shear localization is more apparent with the increase of the average plastic shear strain. The calculated distributions of the local plastic shear strain and deformation agree with the previous numerical and experimental results.
  • Materials

    Adiabatic shear localization evolution for steel based on the Johnson-Cook model and gradient-dependent plasticity

    + Author Affiliations
    • Gradient-dependent plasticity is introduced into the phenomenological Johnson-Cook model to study the effects of strain-hardening, strain rate sensitivity, thermal-softening, and microstructure. The microstructural effect (interactions and interplay among microstructures) due to heterogeneity of texture plays an important role in the process of development or evolution of an adiabatic shear band with a certain thickness depending on the grain diameter. The distributed plastic shear strain and deformation in the shear band are derived and depend on the critical plastic shear strain corresponding to the peak flow shear stress, the coordinate or position, the internal length parameter, and the average plastic shear strain or the flow shear stress. The critical plastic shear strain, the distributed plastic shear strain, and deformation in the shear band are numerically predicted for a kind of steel deformed at a constant shear strain rate. Beyond the peak shear stress, the local plastic shear strain in the shear band is highly nonuniform and the local plastic shear deformation in the band is highly nonlinear. Shear localization is more apparent with the increase of the average plastic shear strain. The calculated distributions of the local plastic shear strain and deformation agree with the previous numerical and experimental results.
    • loading

    Catalog


    • /

      返回文章
      返回