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

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

It is a hardware test.

Relative humidity is constant over the time interval considered in the study: :math:`{h}_{0}=1`.

The initial moment of the calculation is :math:`{t}_{0}=0`, the final moment is :math:`{t}_{f}=365` days.

Aging is taken into account. The material is loaded at three different ages: 2, 10, and 28 days.

In order to change the loading age, we initialize the corresponding internal variable (V55) in ETAT_INIT of STAT_NON_LINE.


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

Néant


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

The values of the longitudinal deformation :math:`{\epsilon }_{\mathit{zz}}^{\mathit{fl}}` are tested at the order numbers corresponding to 365 days.


.. csv-table::

    "**Age at load**", "**Variable tested**", "**Instant**", "**Reference**"
    "2"," :math:`{\epsilon }_{\mathit{zz}}^{\mathit{fl}}` ", "365 days", "0.0008647473"
    "10"," :math:`{\epsilon }_{\mathit{zz}}^{\mathit{fl}}` ", "365 days", "0.0007271718"
    "28"," :math:`{\epsilon }_{\mathit{zz}}^{\mathit{fl}}` ", "365 days", "0.0006574566"


**Table** 4.3-1