dihedral_nharmonic.html
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dihedral_nharmonic.html
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			<H3>dihedral_style nharmonic command
			</H3>
			<P><B>Syntax:</B>
			</P>
			<PRE>dihedral_style nharmonic
			</PRE>
			<P><B>Examples:</B>
			</P>
			<PRE>dihedral_style nharmonic
			dihedral_coeff 3 10.0 20.0 30.0
			</PRE>
			<P><B>Description:</B>
			</P>
			<P>The <I>nharmonic</I> dihedral style uses the potential:
			</P>
			<CENTER><IMG SRC = "Eqs/dihedral_nharmonic.jpg">
			</CENTER>
			<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>n (integer >=1)
			<LI>A1 (energy)
			<LI>A2 (energy)
			<LI>...
			<LI>An (energy)
			</UL>
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			<P><B>Restrictions:</B>
			</P>
			<P>This angle style can only be used if LAMMPS was built with the
			USER_MISC package. See the <A HREF = "Section_start.html#start_3">Making LAMMPS</A>
			section for more info on packages.
			</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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