dihedral_style_harmonic.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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	<H3>dihedral_style harmonic command
	</H3>
	<P><B>Syntax:</B>
	</P>
	<PRE>dihedral_style harmonic
	</PRE>
	<P><B>Examples:</B>
	</P>
	<PRE>dihedral_style harmonic
	dihedral_coeff 1 80.0 1 2
	</PRE>
	<P><B>Description:</B>
	</P>
	<P>The <I>harmonic</I> dihedral style uses the potential
	</P>
	<CENTER><IMG SRC = "Eqs/dihedral_harmonic.jpg">
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	<P>The following coefficients must be defined for each dihedral type via the
	<A HREF = "dihedral_coeff.html">dihedral_coeff</A> command as in the example above, or in
	the data file or restart files read by the <A HREF = "read_data.html">read_data</A>
	or <A HREF = "read_restart.html">read_restart</A> commands:
	</P>
	<UL><LI>K (energy)
	<LI>d (+1 or -1)
	<LI>n (integer >= 0)
	</UL>
	<P><B>Restrictions:</B> none
	</P>
	<P><B>Related commands:</B>
	</P>
	<P><A HREF = "dihedral_coeff.html">dihedral_coeff</A>
	</P>
	<P><B>Default:</B> none
	</P>
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