lammps/doc/dihedral_style_hybrid.txt

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dihedral_style hybrid command :h3

[Syntax:]

dihedral_style hybrid style1 style2 ... :pre

style1,style2 = list of one or more dihedral styles :ul

[Examples:]

dihedral_style hybrid harmonic helix
dihedral_coeff 1 harmonic 6.0 1 3
dihedral_coeff 2 helix 10 10 10 :pre

[Description:]

The {hybrid} style enables the use of multiple dihedral styles in one
simulation.  An dihedral style is assigned to each dihedral type.  For
example, dihedrals in a polymer flow (of dihedral type 1) could be
computed with a {harmonic} potential and dihedrals in the wall
boundary (of dihedral type 2) could be computed with a {helix}
potential.  The assignment of dihedral type to style is made via the
"dihedral_coeff"_dihedral_coeff.html command or in the data file.

In the dihedral_coeff command, the first coefficient sets the dihedral
style and the remaining coefficients are those appropriate to that
style.  In the example above, the 2 dihedral_coeff commands would set
dihedrals of dihedral type 1 to be computed with a {harmonic}
potential with coefficients 80.0, 1.2 for K, d, n.  Dihedral type 2
would be computed with a {helix} potential with coefficients 10.0,
10.0, 10.0 for A, B, C.

A dihedral style of {none} can be specified as an argument to
dihedral_style hybrid and the corresponding dihedral_coeff commands,
if you desire to turn off certain dihedral types.

[Restrictions:] none

[Related commands:]

"dihedral_coeff"_dihedral_coeff.html

[Default:] none