ansys.dyna.core.pre.dynadem.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:attribute:: defined_des
      :value: False



   .. py:attribute:: stub


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



   .. 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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