"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)

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bond_style class2 command :h3

[Syntax:]

bond_style class2 :pre

[Examples:]

bond_style class2
bond_coeff 1 1.0 100.0 80.0 80.0 :pre

[Description:]

The {class2} bond style uses the potential

:c,image(Eqs/bond_class2.jpg)

where r0 is the equilibrium bond distance.

See "(Sun)"_#Sun for a description of the COMPASS class2 force field.

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:

R0 (distance)
K2 (energy/distance^2)
K3 (energy/distance^3)
K4 (energy/distance^4) :ul

[Restrictions:]

This bond style can only be used if LAMMPS was built with the "class2"
package.  See the "Making LAMMPS"_Section_start.html#2_3 section for
more info on packages.

[Related commands:]

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

[Default:] none

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:link(Sun)
[(Sun)] Sun, J Phys Chem B 102, 7338-7364 (1998).
