forked from lijiext/lammps
41 lines
962 B
HTML
41 lines
962 B
HTML
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<HTML>
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<CENTER><A HREF = "http://lammps.sandia.gov">LAMMPS WWW Site</A> - <A HREF = "Manual.html">LAMMPS Documentation</A> - <A HREF = "Section_commands.html#comm">LAMMPS Commands</A>
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</CENTER>
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<HR>
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<H3>fix enforce2d command
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</H3>
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<P><B>Syntax:</B>
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</P>
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<PRE>fix ID group-ID enforce2d
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</PRE>
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<UL><LI>ID, group-ID are documented in <A HREF = "fix.html">fix</A> command
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<LI>enforce2d = style name of this fix command
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</UL>
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<P><B>Examples:</B>
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</P>
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<PRE>fix 5 all enforce2d
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</PRE>
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<P><B>Description:</B>
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</P>
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<P>Zero out the z-dimension velocity and force on each atom in the group.
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This is useful when running a 2d simulation to insure that atoms do
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not move from their initial z coordinate.
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</P>
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<P>The forces due to this fix are also imposed during an energy
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minimization, invoked by the <A HREF = "minimize.html">minimize</A> command.
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</P>
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<P><B>Restrictions:</B> none
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</P>
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<P><B>Related commands:</B> none
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</P>
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<P><B>Default:</B> none
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</P>
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</HTML>
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