E modeling
==============


characteristics of modeling
-----------------------------------


.. image:: images/Object_42.svg
    :width: 556
    :height: 192


.. _RefImage_Object_42.svg:


mesh characteristics
----------------------------


* girder mesh

Number of knots: 21

Number of meshes and type: 10 SEG2


* section mesh


.. image:: images/10000200000001B000000053D084F4032BAED47E.png
    :width: 90
    :height: 21


.. _RefImage_10000200000001B000000053D084F4032BAED47E.png:

Number of knots: 355

Number of meshes and type: 280 QUAD4


Tested values
---------------


+------------------------------------------------------------------------------------+------------------+-----------+-------------+---------------+
|                                                                                    |**Identification**|**Moments**|**Reference**|**% Tolerance**|
+ .. image:: images/Object_43.svg                                                    +                  +           +             +               +
|    :width: 556                                                                     |                  |           |             |               |
+    :height: 192                                                                    +                  +           +             +               +
|                                                                                    |                  |           |             |               |
+                                                                                    +                  +           +             +               +
|                                                                                    |                  |           |             |               |
+------------------------------------------------------------------------------------+------------------+-----------+-------------+---------------+
|5                                                                                   |ETA_PILOTAGE      |10         |1.0          |               |
+------------------------------------------------------------------------------------+------------------+-----------+-------------+---------------+
|5.24                                                                                |ETA_PILOTAGE      |12         |1.0          |               |
+------------------------------------------------------------------------------------+------------------+-----------+-------------+---------------+


In this analysis, an imposed displacement type resolution technique ('DDL_IMPO') is used to find the solution. This method provides for each imposed displacement value, a load multiplier coefficient ('ETA_PILOTAGE'). The value of the load imposed in 'AFFE_CHAR_MECA' is equal to the limit pressure, therefore the reference value of the parameter 'ETA_PILOTAGE' is equal to 1.

The calculations were stopped when the value of parameter ETA_PILOTAGE stabilized.

The beam solution improves significantly when the mesh is refined.