:class:`DEMAnalysis`
====================


.. py:class:: ansys.dyna.core.pre.dynadem.DEMAnalysis

   Bases: :py:obj:`ansys.dyna.core.pre.dynabase.BaseObj`


   
   Activates DEM analysis and defines associated control parameters.
















   ..
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.. py:currentmodule:: DEMAnalysis

Overview
--------

.. tab-set::



   .. tab-item:: Methods

      .. list-table::
          :header-rows: 0
          :widths: auto

          * - :py:attr:`~set_des`
            - Set global control parameters for discrete element spheres.
          * - :py:attr:`~create`
            - Create a DEM analysis.



   .. tab-item:: Attributes

      .. list-table::
          :header-rows: 0
          :widths: auto

          * - :py:attr:`~defined_des`
            - 
          * - :py:attr:`~stub`
            - 
          * - :py:attr:`~type`
            - 






Import detail
-------------

.. code-block:: python

    from ansys.dyna.core.pre.dynadem import DEMAnalysis


Attribute detail
----------------

.. py:attribute:: defined_des
   :value: False


.. py:attribute:: stub

.. py:attribute:: type
   :value: 'analysis_dem'




Method detail
-------------

.. py:method:: set_des(normal_damping_coeff=0.0, tangential_damping_coeff=0.0, static_friction_coeff=0.0, rolling_friction_coeff=0.0, normal_spring_constant_sf=0.01, ratio=0.2857)

   
   Set global control parameters for discrete element spheres.


   :Parameters:

       **normal_damping_coeff** : :class:`python:float`, :obj:`optional`
           Normal damping coefficient. The default value is ``0.0``.

       **tangential_damping_coeff** : :class:`python:float`, :obj:`optional`
           Tangential damping coefficient. The default value is ``0.0``.

       **static_friction_coeff** : :class:`python:float`, :obj:`optional`
           Static coefficient of friction. The default is ``0.0``.

       **rolling_friction_coeff** : :class:`python:float`, :obj:`optional`
           Rolling coefficient of friction. The default is ``0.0``.

       **normal_spring_constant_sf** : :class:`python:float`, :obj:`optional`
           Normal spring constant. The default is ``0.01``.

       **ratio** : :class:`python:float`, :obj:`optional`
           Ratio. The default is ``0.2857``.














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.. py:method:: create()

   
   Create a DEM analysis.
















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