of.boundary.edge.force
======================

.. raw:: html

    <style> .red {color:#F64A8A; font-weight:bold;} </style>
    <style> .blue {color:#4169E1; font-weight:bold;} </style>

.. role:: red
.. role:: blue

**of.**\ :red:`boundary.edge.force` :blue:`*edge_tag*` <string> :blue:`normal` <double> :blue:`shear` <double> :blue:`ntable` <string_tag> :blue:`stable` <string_tag>
    |
    Create the edge force boundary on the edge groups. The force can be time dependent if you use the table. The normal shear values will be the factor if you use the table. That is 
    :math:`f[i] = x \times table[i]`

    The force will be automatically applied on the two nodes of the edge and consider the edge direction. Normal direction is the local normal direction, and towards to inside. Shear is along the edge, and counterclockwise.


    **Parameters:** 
        **nodal_tag:** tag of the group
        
        **normal:** (default 0.0) Edge forces in the local normal direction or the amplitude of n table.
        
        **shear:** (default 0.0) Edge forces in the local shear direction or the amplitude of s table.

        **ntable:** (default -1) time dependent force in the local normal direction.
        
        **stable:** (default -1) time dependent force in the local shear direction.

|

Example:
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.. code-block:: 

    of.boundary.edge.force ‘bottom’ normal 1000