Discretization
==============


Degrees of freedom
-----------------


.. csv-table::

    "**Modeling**", "**Degrees of freedom at all nodes**", "**Degrees of freedom only at vertex nodes**"



.. csv-table::

    "D_ PLAN_INCO_UPG ", "DX, DY", "PRES (*), GONF"
    "AXIS_INCO_UPG ", "DX, DY", "PRES (*), GONF"


* no kinematic conditions can be imposed on degree of freedom PRES.


Stiffness matrix support mesh
------------------------

The finite element support cells can be triangles, or quadrangles (degree 2) for D_ PLAN_INCO_UPG and AXIS_INCO_UPG models.


.. csv-table::

    "**Modeling**", "**Mesh**", "**Interpolation**"
    **on the go**", "**Interpolation**
    **in pressure and inflation**"



.. csv-table::

    "D_ PLAN_INCO_UPG "," TRIA6 ", "Quadratic", "Linear"
    "", "QUAD8 ", "Quadratic", "Linear"
    "AXIS_INCO_UPG "," TRIA6 ", "Quadratic", "Linear"
    "", "QUAD8 ", "Quadratic", "Linear"



Surface load support mesh
------------------------------------------


.. csv-table::

    "**Modeling**", "**Mesh**", "**Interpolation on the go**"



.. csv-table::

    "D_ PLAN_INCO_UPGet AXIS_INCO_UPG "," SEG3 ", "Quadratic"