bond_nonlinear.html
b704a82dafc5lammm-master-deprecated

bond_nonlinear.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>bond_style nonlinear command
			</H3>
			<P><B>Syntax:</B>
			</P>
			<PRE>bond_style nonlinear
			</PRE>
			<P><B>Examples:</B>
			</P>
			<PRE>bond_style nonlinear
			bond_coeff 2 100.0 1.1 1.4
			</PRE>
			<P><B>Description:</B>
			</P>
			<P>The <I>nonlinear</I> bond style uses the potential
			</P>
			<CENTER><IMG SRC = "Eqs/bond_nonlinear.jpg">
			</CENTER>
			<P>to define an anharmonic spring <A HREF = "#Rector">(Rector)</A> of equilibrium
			length r0 and maximum extension lamda.
			</P>
			<P>The following coefficients must be defined for each bond type via the
			<A HREF = "bond_coeff.html">bond_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>epsilon (energy)
			<LI>r0 (distance)
			<LI>lamda (distance)
			</UL>
			<P><B>Restrictions:</B> none
			</P>
			<P><B>Related commands:</B>
			</P>
			<P><A HREF = "bond_coeff.html">bond_coeff</A>, <A HREF = "delete_bonds.html">delete_bonds</A>
			</P>
			<P><B>Default:</B> none
			</P>
			<HR>

			<A NAME = "Rector"></A>

			<P><B>(Rector)</B> Rector, Van Swol, Henderson, Molecular Physics, 82, 1009 (1994).
			</P>
			</HTML>