Operands
=========


Operand RESULTAT
-----------------


.. code-block:: text

    ♦ RESULTAT = resu,

Name of a result concept such as evol_elas or evol_noli.


Operands NUME_ORDRE/INST
---------------------------

◊/INST: post-processing calculation time

 /NUME_ORDRE: serial number of post-processed fields

If neither INST nor NUME_ORDRE are entered, by default the field corresponding to the first calculated moment will be processed.


Operand CHAM
------------


♦ CHAM = /' EFFORT '
---------------------------

             /' DEFORMATION '

.. code-block:: text

'EFFORT': field EFGE_ELNO containing 8 components:


* the 3 membrane forces :math:`{N}_{\mathrm{xx}},{N}_{\mathrm{yy}},{N}_{\mathrm{xy}}`


* the 3 bending forces :math:`{M}_{\mathrm{xx}},{M}_{\mathrm{yy}},{M}_{\mathrm{xy}}`


* the 2 :math:`{T}_{x},{T}_{y}` shear forces

'DEFORMATION': field containing the 6 components of the deformation tensor.

The deformations in the thickness are calculated from the generalized deformations of the mean surface DEGE_ELNO :math:`({e}_{\mathrm{xx}},{e}_{\mathrm{yy}},{e}_{\mathrm{xy}},{\kappa }_{\mathrm{xx}},{\kappa }_{\mathrm{yy}},{\kappa }_{\mathrm{xy}},{\gamma }_{x},{\gamma }_{y})` where:


* :math:`({e}_{\mathrm{xx}},{e}_{\mathrm{yy}},{e}_{\mathrm{xy}})` refer to membrane deformations,


* :math:`({\kappa }_{\mathrm{xx}},{\kappa }_{\mathrm{yy}},{\kappa }_{\mathrm{xy}})` refer to flexural deformations,


* :math:`({\gamma }_{x},{\gamma }_{y})` refer to deformations associated with transverse shear.

The deformations in the thickness (3D tensor) are obtained by the formulas:


* :math:`{\epsilon }_{\mathrm{xx}}={e}_{\mathrm{xx}}+h{\kappa }_{\mathrm{xx}}`


* :math:`{\epsilon }_{\mathrm{yy}}={e}_{\mathrm{yy}}+h{\kappa }_{\mathrm{yy}}`


* :math:`{\epsilon }_{\mathrm{xy}}={e}_{\mathrm{xy}}+h{\kappa }_{\mathrm{xy}}`


* :math:`2{\epsilon }_{\mathrm{xz}}={\gamma }_{x}`


* :math:`2{\epsilon }_{\mathrm{yz}}={\gamma }_{y}`


Keyword factor COOR_POINT
--------------------------


.. code-block:: text

    ♦ COOR_POINT = _F (


Operand COOR
~~~~~~~~~~~~~

         ♦ COOR =( x, y, z, h,)

 :math:`x,y,z`: coordinates of the point, positioned on the neutral fiber

 :math:`h`: position of the point in the thickness of the shell

     (:math:`-e/2\le h\le +e/2`, where :math:`e` is the thickness)

If CHAM = 'EFFORT', :math:`h` is ignored, the forces being calculated by integrating the stresses into the thickness. If the user enters a non-zero :math:`h` an alarm message is sent to indicate that it is not taken into account.