bond_style_nonlinear.txt
5b1f5c520a54lammm-devel

bond_style_nonlinear.txt
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			"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c

			:link(lws,http://lammps.sandia.gov)
			:link(ld,Manual.html)
			:link(lc,Section_commands.html#comm)

			:line

			bond_style nonlinear command :h3

			[Syntax:]

			bond_style nonlinear :pre

			[Examples:]

			bond_style nonlinear
			bond_coeff 2 100.0 1.1 1.4 :pre

			[Description:]

			The {nonlinear} bond style uses the potential

			:c,image(Eqs/bond_nonlinear.jpg)

			to define an anharmonic spring "(Rector)"_#Rector of equilibrium
			length r0 and maximum extension lamda.

			The following coefficients must be defined for each bond type via the
			"bond_coeff"_bond_coeff.html command as in the example above, or in
			the data file or restart files read by the "read_data"_read_data.html
			or "read_restart"_read_restart.html commands:

			epsilon (energy)
			r0 (distance)
			lamda (distance) :ul

			[Restrictions:] none

			[Related commands:]

			"bond_coeff"_bond_coeff.html, "delete_bonds"_delete_bonds.html

			[Default:] none

			:line

			:link(Rector)
			[(Rector)] Rector, Van Swol, Henderson, Molecular Physics, 82, 1009 (1994).