# angle_style sdk command

## Syntax

angle_style sdk

angle_style sdk/omp


## Examples

angle_style sdk
angle_coeff 1 300.0 107.0


## Description

The sdk angle style is a combination of the harmonic angle potential,

where theta0 is the equilibrium value of the angle and K a prefactor, with the repulsive part of the non-bonded lj/sdk pair style between the atoms 1 and 3. This angle potential is intended for coarse grained MD simulations with the CMM parametrization using the pair_style lj/sdk. Relative to the pair_style lj/sdk, however, the energy is shifted by epsilon, to avoid sudden jumps. Note that the usual 1/2 factor is included in K.

The following coefficients must be defined for each angle type via the angle_coeff command as in the example above: