B modeling
==============


Characteristics of modeling
-----------------------------------

Fragile modeling is done with modeling AXIS_JOINT and law CZM_LIN_REG. Volume elements are modeled with model AXIS.


Characteristics of the mesh
----------------------------

The mesh is linear.

Count of elements: 280 QUAD4.

Number of interface elements: 15 QUAD4.


Tested sizes and results
------------------------------

**Non-regression test**: diametral contraction (:math:`\mathrm{-}2\mathrm{\times }\mathit{DX}` from point :math:`B`), traction force (the resultant :math:`\mathit{DY}` of REAC_NODA out of :math:`\mathit{CD}` multiplied by :math:`2\pi`) as a function of the tensile displacement :math:`\mathit{DY}` (on :math:`\mathit{CD}`).

For a shift from :math:`\mathrm{0,6}\mathit{mm}` according to :math:`Y` to :math:`\mathit{CD}`

.. csv-table::

    "**Size tested**", "**Code_Aster**", "**Tolerance (** :math:`\text{\%}` **)**"
    "Contraction (:math:`\mathrm{mm}`)", "0.253835", "0.10"
    "Force (:math:`\mathit{kN}`)", "25.18191", "0.10"


For a shift from :math:`\mathrm{0,8}\mathit{mm}` according to :math:`Y` to :math:`\mathrm{CD}`

.. csv-table::

    "**Size tested**", "**Code_Aster**", "**Tolerance (** :math:`\text{\%}` **)**"
    "Contraction (:math:`\mathrm{mm}`)", "0.254455", "0.10"
    "Force (:math:`\mathrm{kN}`)", "7.112202", "0.10"


*4*Summary of results*

Non-regression tests are carried out for both models. In addition, comparison tests with the Rousselier model are carried out for modeling A.