bond_style nonlinear command

Syntax:

bond_style nonlinear 

Examples:

bond_style nonlinear
bond_coeff 2 100.0 1.1 1.4 

Description:

The nonlinear bond style uses the potential

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

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

• epsilon (energy)
• r0 (distance)
• lamda (distance)

Restrictions:

Bond styles can only be set for atom styles that allow bonds to be defined.

This bond style is part of the "molecular" package. It is only enabled if LAMMPS was built with that package. See the Making LAMMPS section for more info.

Related commands:

bond_coeff, delete_bonds

Default: none

(Rector) Rector, Van Swol, Henderson, Molecular Physics, 82, 1009 (1994).