fix_setforce.html
No OneTemporary
Actions

Subscribers

None

File Metadata

	<HTML>
	<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>
	</CENTER>






	<HR>

	<H3>fix setforce command
	</H3>
	<P><B>Syntax:</B>
	</P>
	<PRE>fix ID group-ID setforce fx fy fz
	</PRE>
	<UL><LI>ID, group-ID are documented in <A HREF = "fix.html">fix</A> command
	<LI>setforce = style name of this fix command
	<LI>fx,fy,fz = force component values
	</UL>
	<P><B>Examples:</B>
	</P>
	<PRE>fix freeze indenter setforce 0.0 0.0 0.0
	fix 2 edge setforce NULL 0.0 0.0
	</PRE>
	<P><B>Description:</B>
	</P>
	<P>Set each component of force on each atom in the group to the specified
	values fx,fy,fz. This erases all previously computed forces on the
	atom, though additional fixes could add new forces. This command can
	be used to freeze certain atoms in the simulation by zeroing their
	force, assuming their initial velocity zero.
	</P>
	<P>Any of the fx,fy,fz values can be specified as NULL which means do not
	alter the force component in that dimension.
	</P>
	<P>The forces due to this fix are also imposed during an energy
	minimization, invoked by the <A HREF = "minimize.html">minimize</A> command.
	</P>
	<P><B>Restrictions:</B> none
	</P>
	<P><B>Related commands:</B>
	</P>
	<P><A HREF = "fix_addforce.html">fix addforce</A>, <A HREF = "fix_aveforce.html">fix aveforce</A>
	</P>
	<P><B>Default:</B> none
	</P>
	</HTML>