.. _V7.22.136:

**v7.22.136** HSNV136 - Degeneration of the META_LEMA_ANI model into Norton's law: simple traction in large deformations
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**Summary:**

This test consists in subjecting a cylindrical bar whose behavior is viscoplastic to traction along its axis, by modeling it in two different but equivalent ways: either with model META_LEMA_ANI, which is "degenerated" into a Norton law by choosing the coefficients wisely (modeling A), or with a Norton law proper (modeling B).

The loading is done with imposed displacement and requires the geometry to be updated (large deformations, keyword PETIT_REAC). We must then obtain the same answer for both models A and B.

In addition, C modeling is introduced in order to validate large logarithmic deformations (keyword GDEF_LOG) for this behavior.

Finally, the D modeling makes it possible to validate the taking into account by the SIMU_POINT_MAT command of metallurgical data with the META_LEMA_ANI law.

The bar is modelled by a quadrangular element QUAD4, axisymmetrically.


.. toctree::
    :hidden:

    self

.. toctree::
    :maxdepth: 2
    :numbered:

    Probl_me_de_r_f_rence
    Solution_de_r_f_rence
    Mod_lisation_A
    Mod_lisation_B
    Mod_lisation_C
    Mod_lisation_D
    Synth_se_des_r_sultats