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


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

Transformation gradient imposed on the material point.

GRAD_IMPOSE = _F (F11=F2,

F22=F1,

F33=F2,

F12= ZERO,

F13= ZERO,

F21= ZERO,

F23= ZERO,

F31= ZERO,

F32= ZERO,

with :math:`\mathrm{F1}=1+{\varepsilon }_{\mathrm{yy}}=1+0.2\frac{t}{2000}` :math:`\mathrm{F2}=1.`


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


Tested values
~~~~~~~~~~~~~~~~


.. csv-table::

    "**Variable**", "**Instants** :math:`(s)` ", "**Reference**", "**Tolerance**"
    ":math:`{\sigma }_{\mathrm{yy}}` :math:`(\mathrm{MPa})` ", "2000", "5.98289E+02"," 0.01%"
    ":math:`\mathrm{V1}` ", "2000", "1.18814E-01"," 0.01%"