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


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


.. csv-table::

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



.. csv-table::

    "3D", "DX, DY, DZ", "PRES (*), GONF"


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


Support mesh for stiffness matrices
---------------------------------------

For 3D modeling, finite element support meshes can be tetrahedra, hexahedra or prisms.


.. csv-table::

    "**Modeling**", "**Mesh**", "**Interpolation in displacement**", "**Interpolation in pressure and inflation**"



.. csv-table::

    "3D", "TETRA10 ", "Quadratic", "Linear"
    "", "HEXA20 ", "Quadratic", "Linear"
    "", "PENTA15 ", "Quadratic", "Linear"



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


.. csv-table::

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



.. csv-table::

    "3D", "TRIA6 ", "Quadratic"
    "", "QUAD8 ", "Quadratic"