master

dihedral_multi_harmonic.html
View Options

			<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>dihedral_style multi/harmonic command
			</H3>
			<P><B>Syntax:</B>
			</P>
			<PRE>dihedral_style multi/harmonic
			</PRE>
			<P><B>Examples:</B>
			</P>
			<PRE>dihedral_style multi/harmonic
			dihedral_coeff 1 20 20 20 20 20
			</PRE>
			<P><B>Description:</B>
			</P>
			<P>The <I>multi/harmonic</I> dihedral style uses the potential
			</P>
			<CENTER><IMG SRC = "Eqs/dihedral_multi_harmonic.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>A1 (energy)
			<LI>A2 (energy)
			<LI>A3 (energy)
			<LI>A4 (energy)
			<LI>A5 (energy)
			</UL>
			<P><B>Restrictions:</B>
			</P>
			<P>This dihedral style can only be used if LAMMPS was built with the
			"molecular" package (which it is by default). See the <A HREF = "Section_start.html#2_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>
			</HTML>