General characteristics
====


Geometry
----

The three-point flexure beam studied is 5m long. Its section is 0.2x0.5m. Its geometry as well as the positioning of the steels that constitute it are defined on the.


.. image:: images/1000000000000368000003CCC6FA11DD0FAE7FD7.png
    :width: 5.911in
    :height: 6.2146in


.. _RefImage_1000000000000368000003CCC6FA11DD0FAE7FD7.png:

**Figure** 1.1-a: Beam plane.


.. _RefNumPara__13770_529633604:


Material properties
----

• Concrete: resistance class' C30/37 'or' C35/45 '


.. image:: images/1000020100000F0400000948DF75976730F7DA08.png
    :width: 6.3374in
    :height: 3.9165in


.. _RefImage_1000020100000F0400000948DF75976730F7DA08.png:

**Figure** 1.2-a **:** Examples of answers with the Mazars 1D law.

• Steel:

+----------------------------------------------------------------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+
|FE400: :math:`{f}_{\mathit{yk}}=400\mathit{MPa}` Tangent module (plastic slope) :math:`{E}_{T}=1200\mathit{MPa}`|                                                                                                                                                                                                         |
+                                                                                                                + .. image:: images/100002010000015A00000116AA548BCE691F9E64.png                                                                                                                                          +
|                                                                                                                |    :width: 1.6925in                                                                                                                                                                                     |
+                                                                                                                +    :height: 1.3598in                                                                                                                                                                                    +
|                                                                                                                |                                                                                                                                                                                                         |
+                                                                                                                + **Figure** 1.2-b **:** **C** **C** **curve stress — deformation of steel.**                                                                                                                             +
|                                                                                                                |                                                                                                                                                                                                         |
+----------------------------------------------------------------------------------------------------------------+---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+



Boundary conditions and loads
----

Simple press in :math:`B`: :math:`\mathit{DY}=0`.

Double press in :math:`A`: :math:`\mathit{DX}=\mathit{DY}=\mathit{DZ}=0` as well as :math:`\mathit{DRX}=\mathit{DRY}=0`.

Quasi-static loading: monotonic downward displacement :math:`\mathit{DY}` applied halfway through :math:`C` (3-point flexure test), according to a linear function of time:


.. csv-table::

    ":math:`t` "," :math:`\mathit{DY}`"
    ":math:`\mathrm{0,0}` "," :math:`\mathrm{0,0}\mathrm{cm}`"
    ":math:`\mathrm{3,0}` "," :math:`\mathrm{-}\mathrm{3,0}\mathit{cm}`"
    ":math:`\mathrm{5,0}` "," :math:`\mathrm{-}\mathrm{5,0}\mathit{cm}`"