git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@14950 f3b2605a-c512-4ea7-a41b-209d697bcdaa

doc/html/_sources/fix_nve_tri.txt

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+.. index:: fix nve/tri
+
+fix nve/tri command
+===================
+
+Syntax
+""""""
+
+.. parsed-literal::
+
+   fix ID group-ID nve/tri
+
+* ID, group-ID are documented in :doc:`fix <fix>` command
+* nve/tri = style name of this fix command
+
+Examples
+""""""""
+
+.. parsed-literal::
+
+   fix 1 all nve/tri
+
+Description
+"""""""""""
+
+Perform constant NVE integration to update position, velocity,
+orientation, and angular momentum for triangular particles in the
+group each timestep.  V is volume; E is energy.  This creates a system
+trajectory consistent with the microcanonical ensemble.  See
+:doc:`Section_howto 14 <Section_howto>` of the manual for an overview of
+using triangular particles.
+
+This fix differs from the :doc:`fix nve <fix_nve>` command, which
+assumes point particles and only updates their position and velocity.
+
+Restart, fix_modify, output, run start/stop, minimize info
+""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
+
+No information about this fix is written to :doc:`binary restart files <restart>`.  None of the :doc:`fix_modify <fix_modify>` options
+are relevant to this fix.  No global or per-atom quantities are stored
+by this fix for access by various :ref:`output commands <howto_15>`.  No parameter of this fix can
+be used with the *start/stop* keywords of the :doc:`run <run>` command.
+This fix is not invoked during :doc:`energy minimization <minimize>`.
+
+Restrictions
+""""""""""""
+
+
+This fix is part of the ASPHERE package.  It is only enabled if LAMMPS
+was built with that package.  See the :ref:`Making LAMMPS <start_3>` section for more info.
+
+This fix requires that particles be triangles as defined by the
+:doc:`atom_style tri <atom_style>` command.
+
+Related commands
+""""""""""""""""
+
+:doc:`fix nve <fix_nve>`, :doc:`fix nve/asphere <fix_nve_asphere>`
+
+**Default:** none
+
+
+.. _lws: http://lammps.sandia.gov
+.. _ld: Manual.html
+.. _lc: Section_commands.html#comm