.. index:: fix nve/body fix nve/body command ==================== Syntax """""" .. parsed-literal:: fix ID group-ID nve/body * ID, group-ID are documented in :doc:`fix ` command * nve/body = style name of this fix command Examples """""""" .. parsed-literal:: fix 1 all nve/body Description """"""""""" Perform constant NVE integration to update position, velocity, orientation, and angular velocity for body particles in the group each timestep. V is volume; E is energy. This creates a system trajectory consistent with the microcanonical ensemble. See :ref:`Section_howto 14 ` of the manual and the :doc:`body ` doc page for more details on using body particles. This fix differs from the :doc:`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 `. None of the :doc:`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 `. No parameter of this fix can be used with the *start/stop* keywords of the :doc:`run ` command. This fix is not invoked during :doc:`energy minimization `. Restrictions """""""""""" This fix is part of the BODY package. It is only enabled if LAMMPS was built with that package. See the :ref:`Making LAMMPS ` section for more info. This fix requires that atoms store torque and angular momementum and a quaternion as defined by the :doc:`atom_style body ` command. All particles in the group must be body particles. They cannot be point particles. Related commands """""""""""""""" :doc:`fix nve `, :doc:`fix nve/sphere `, :doc:`fix nve/asphere ` **Default:** none .. _lws: http://lammps.sandia.gov .. _ld: Manual.html .. _lc: Section_commands.html#comm