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


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

3 elements :math:`\mathrm{1D}` (SEG2). Modeling BARRE

In this modeling, we duplicated the second calculation with STAT_NON_LINE in order to leave the elastic zone and thus be able to validate the anelastic deformations (EPSP_ELGA) in addition to the validation of the options EPVC_ELGA and EPME_ELGA on the elements BARRE on the elements carried out on the elastic calculation.

To achieve this aim, the cross section of the bar and the non-linearity parameters of the material were modified. The section changes to an area of :math:`1.5` and the work hardening parameters are as follows:

D_ SIGM_EPSI = :math:`180`

SY = :math:`100.`


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

Number of knots: 6

Number of stitches: 3 SEG2


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

**Elastic calculation:**


.. csv-table::

    "**Identification**", "**Instants**", "***N** bar****o**", "**Reference**", "**Aster**", "**Discrep** :math:`\text{\%}`"
    "normal force :math:`N` ", "1", "1", "1", "—200", "—200", "0"
    "normal force :math:`N` ", "", "2", "2", "100", "100", "0"
    "normal force :math:`N` ", "", "3", "3", "100", "100", "0"
    "normal force :math:`N` ", "2", "1", "1", "—200", "—200", "0"
    "normal force :math:`N` ", "", "2", "2", "100", "100", "0"
    "normal force :math:`N` ", "", "3", "3", "100", "100", "0"
    "normal force :math:`N` ", "3", "1", "1", "20", "20", "0"
    "normal effort :math:`N` ", "", "2", "2", "—120", "—120", "0"
    "normal force :math:`N` ", "", "3", "3", "100", "100", "0"
    "normal force :math:`N` ", "4", "1", "1", "200", "200", "0"
    "normal effort :math:`N` ", "", "2", "2", "—100", "—100", "0"
    "normal force :math:`N` ", "", "3", "3", "—100", "—100", "0"
    "normal force :math:`N` ", "5", "1", "1", "200", "200", "0"
    "normal effort :math:`N` ", "", "2", "2", "—100", "—100", "0"
    "normal force :math:`N` ", "", "3", "3", "—100", "—100", "0"



.. csv-table::

    "**Instant**", "**Mesh/Point**", "**Field/Component**", "**Reference Type**", "**Reference Value**", "**Tolerance (%)**"
    "1.0"," BARR1 /1 "," EPSI/EPXX ","/", "'NON_REGRESSION'", "-"
    "2.0"," BARR1 /1 "," EPSI/EPXX ","/", "'NON_REGRESSION'", "-"
    "3.0"," BARR1 /1 "," EPSI/EPXX ","/", "'NON_REGRESSION'", "-", "-"
    "1.0"," BARR1 /1 "," EPVC/EPTHER_L ","/", "'ANALYTIQUE'", "150.0E-5", "0.1"
    "2.0"," BARR1 /1 "," EPVC/EPTHER_L ","/", "'ANALYTIQUE'", "330.0E-5", "0.1"
    "3.0"," BARR1 /1 "," EPVC/EPTHER_L ","/", "'ANALYTIQUE'", "220.0E-5", "0.1"



.. csv-table::

    "**Instant**", "**Mesh/Point**", "**Field/Component**", "**Reference Type**", "**Reference Value**", "**Tolerance (%)**"
    "1.0"," BARR1 /1 "," EPME/EPXX ","/", "'ANALYTIQUE'", "-1.0E-3", "0.1"
    "2.0"," BARR1 /1 "," EPME/EPXX ","/", "'ANALYTIQUE'", "-22.0E-4", "0.1"
    "3.0"," BARR1 /1 "," EPME/EPXX ","/", "'ANALYTIQUE'", "0. ", "0.1"


**Nonlinear calculation:**


.. csv-table::

    "**Instant**", "**Mesh/Point**", "**Field/Component**", "**Reference Type**", "**Reference Value**", "**Tolerance (%)**"
    "1.0"," BARR1 /1 "," SIEF/SIXX ","/", "'NON_REGRESSION'", "-"
    "1.0"," BARR1 /1 "," EPME/EPXX ","/", "'NON_REGRESSION'", "-"
    "1.0"," BARR1 /1 "," EPSP/EPXX ","/", "'NON_REGRESSION'", "-"