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rLAMMPS lammps
dihedral_style_multi_harmonic.html
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<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> none
</P>
<P><B>Related commands:</B>
</P>
<P><A HREF = "dihedral_coeff.html">dihedral_coeff</A>
</P>
<P><B>Default:</B> none
</P>
</HTML>
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