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


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


.. csv-table::

    "**Modeling**", "**Degrees of freedom (at each vertex node)**"



.. csv-table::

    "D_ PLAN_ABSO ", "DX: next move :math:`X`"
    "", "DY: next move :math:`Y`"



Support meshes for stiffness matrices
-----------------------------------------

The support meshes of the finite elements are segments. The elements are iso-parametric.


.. csv-table::

    "**Modeling**", "**Mesh**", "**Interpolation**", "**Remarks**"



.. csv-table::

    "D_ PLAN_ABSO "," SEG2 ", "linear", ""
    "", "SEG3 ", "quadratic", ""



Load support meshes
--------------------------------

The same as before.