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EXISTENCE FOR DISLOCATION-FREE FINITE PLASTICITY

机译:无位移有限塑性的存在

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摘要

This note addresses finite plasticity under the constraint that plastic deformations are compatible. In this case, the total elastoplastic deformation of the medium is decomposed as y = y(e) circle y(p), where the plastic deformation y(p) is defined on the fixed reference configuration and the elastic deformation y(e) is a mapping from the varying intermediate configuration y(p)(Omega). Correspondingly, the energy of the medium features both Lagrangian (plastic, loads) and not Lagrangian contributions (elastic).We present a variational formulation of the static elastoplastic problem in this setting and show that a solution is attained in a suitable class of admissible deformations. Possible extensions of the result, especially in the direction of quasistatic evolutions, are also discussed.
机译:本说明在塑性变形兼容的约束下解决了有限的塑性问题。在这种情况下,介质的总弹塑性变形分解为y = y(e)圆y(p),其中,塑性变形y(p)定义为固定的参考配置,弹性变形y(e)为来自变化的中间配置y(p)(Omega)的映射。相应地,介质的能量既具有拉格朗日(塑性,载荷)特征,又不具有拉格朗日贡献(弹性)特征。在此背景下,我们给出了静态弹塑性问题的变分形式,并证明了在合适的容许变形类别下可以得到解。还讨论了结果的可能扩展,尤其是在准静态演化的方向上。

著录项

  • 来源
    《ESAIM》 |2019年第1期|21.1-21.20|共20页
  • 作者

  • 作者单位

    Univ Vienna Fac Math Oskar Morgenstern Pl 1 A-1090 Vienna Austria|Ist Matemat Applicata & Tecnol Informat E Magenes V Ferrata 1 I-27100 Pavia Italy;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Finite plasticity; static problem; existence; quasistatic evolution;

    机译:有限的可塑性静态问题存在;准静态进化;

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