Convert a first set of AtC documentation html files to rst and add infrastructure files and links

   angles

   dihedrals

   impropers

   fix_modify_atc_commands

Indices and tables

==================

.. index:: fix_modify AtC mesh create

fix_modify AtC mesh create command

===================================

Syntax

""""""

.. parsed-literal::

   fix_modify <AtC fixID> mesh create <nx> <ny> <nz> <region-ID> <f|p> <f|p> <f|p>

* AtC fixID = ID of :doc:`fix atc <fix_atc>` instance

* mesh create = name of the AtC sub-command

* nx ny nz = number of elements in x-, y-, and z-direction

* region-ID = ID of region that is to be meshed

* f or p = periodicity flags for x-, y-, and z-direction

Examples

""""""""

.. code-block:: LAMMPS

   fix_modify AtC mesh create 10 1 1 feRegion p p p

Description

"""""""""""

Creates a uniform mesh in a rectangular region.

Restrictions

""""""""""""

Creates only uniform rectangular grids in a rectangular region

Related AtC commands

""""""""""""""""""""

:doc:`fix_modify AtC mesh quadrature <atc_mesh_quadrature>`

Default

"""""""

When created, the mesh defaults to gauss2 (2-point Gaussian)

quadrature. Use the :doc:`fix_modify AtC mesh quadrature

<atc_mesh_quadrature>` command to change the quadrature style.

.. index:: fix_modify AtC mesh create_nodeset

fix_modify AtC mesh create_nodeset command

==========================================

Syntax

""""""

.. parsed-literal::

   fix_modify <AtC fixID> mesh create_nodeset <id> <xmin> <xmax> <ymin> <ymax> <zmin> <zmax>

* AtC fixID = ID of :doc:`fix atc <fix_atc>` instance

* mesh create\_nodeset = name of the AtC sub-command

* id = id to assign to the collection of FE nodes

* <xmin> <xmax> <ymin> <ymax> <zmin> <zmax> = coordinates of the bounding box that contains only the desired nodes

Examples

""""""""

.. code-block:: LAMMPS

   fix_modify AtC mesh create_nodeset lbc -12.1 -11.9 -12 12 -12 12

Description

"""""""""""

Command to assign an id to a set of FE nodes to be used subsequently in

defining boundary conditions.

Restrictions

""""""""""""

None

Related AtC commands

""""""""""""""""""""

:doc:`fix_modify AtC mesh create <atc_mesh_create>`

:doc:`fix_modify AtC mesh read <atc_mesh_read>`

Default

"""""""

Coordinates are assumed to be in lattice units.

.. index:: fix_modify AtC mesh quadrature

fix_modify AtC mesh quadrature command

======================================

Syntax

""""""

.. parsed-literal::

   fix_modify <AtC fixID> mesh quatrature <quad>

* AtC fixID = ID of :doc:`fix atc <fix_atc>` instance

* mesh quadrature = name of the AtC sub-command

* quad = *nodal* or *gauss1* or *gauss2* or *gauss3* or *face*

Examples

""""""""

.. code-block:: LAMMPS

   fix_modify AtC mesh quadrature face

Description

"""""""""""

(Re-)assigns the quadrature style for an existing mesh.  When a mesh is

created its quadrature method defaults to gauss2.  Use this call to

change it after the fact.

Restrictions

""""""""""""

None.

Related AtC commands

""""""""""""""""""""

:doc:`fix_modify AtC mesh create <atc_mesh_create>`

Default

"""""""

None.

.. index:: fix_modify AtC mesh read

fix_modify AtC mesh read command

===================================

Syntax

""""""

.. parsed-literal::

   fix_modify <AtC fixID> mesh read <f|p> <f|p> <f|p>

* AtC fixID = ID of :doc:`fix atc <fix_atc>` instance

* mesh read = name of the AtC sub-command

* filename = name of the file containing the mesh to be read

* f or p = periodicity flags for x-, y-, and z-direction (optional)

Examples

""""""""

.. code-block:: LAMMPS

   fix_modify AtC mesh read myComponent.mesh p p p

   fix_modify AtC mesh read myOtherComponent.exo

Description

"""""""""""

Reads a mesh from a text or exodus file, and assigns periodic boundary

conditions if needed.

Restrictions

""""""""""""

None

Related AtC commands

""""""""""""""""""""

:doc:`fix_modify AtC mesh create <atc_mesh_create>`

:doc:`fix_modify AtC mesh write <atc_mesh_write>`

Default

"""""""

Periodicity flags are set to false (f) by default.