# angle_style cross command

## Syntax

angle_style cross


## Examples

angle_style cross
angle_coeff 1 200.0 100.0 100.0 1.25 1.25 107.0


## Description

The cross angle style uses a potential that couples the bond stretches of a bend with the angle stretch of that bend:

where r12,0 is the rest value of the bond length between atom 1 and 2, r32,0 is the rest value of the bond length between atom 2 and 2, and theta0 is the rest value of the angle. KSS is the force constant of the bond stretch-bond stretch term and KBS0 and KBS1 are the force constants of the bond stretch-angle stretch terms.

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

• KSS (energy/distance^2)