.. _commands-fem:

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Use Finite Element Model
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.. code-block:: sierrainput

   USE FINITE ELEMENT MODEL <string>model_name

The model specification occurs within the region scope. To specify the model (finite element mesh), use this command line. The string ``model_name`` must match a name used in a ``FINITE ELEMENT MODEL`` command block described in :numref:`elements-fem`. If one of these command blocks uses the name ``penetrator`` in the command-block line and this is the model we wish to use in the region scope, then we would enter the command line as follows:

.. code-block:: sierrainput

   USE FINITE ELEMENT MODEL penetrator

