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lammps/doc/angle_style_hybrid.txt
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angle_style_hybrid.txt
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"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)
:line
angle_style hybrid command :h3
[Syntax:]
angle_style hybrid style1 style2 ... :pre
style1,style2 = list of one or more angle styles :ul
[Examples:]
angle_style hybrid harmonic cosine
angle_coeff 1 harmonic 80.0 1.2
angle_coeff 2* cosine 50.0 :pre
[Description:]
The {hybrid} style enables the use of multiple angle styles in one
simulation. An angle style is assigned to each angle type. For
example, angles in a polymer flow (of angle type 1) could be computed
with a {harmonic} potential and angles in the wall boundary (of angle
type 2) could be computed with a {cosine} potential. The assignment
of angle type to style is made via the "angle_coeff"_angle_coeff.html
command or in the data file.
In the angle_coeff command, the first coefficient sets the angle style
and the remaining coefficients are those appropriate to that style.
In the example above, the 2 angle_coeff commands would set angles of
angle type 1 to be computed with a {harmonic} potential with
coefficients 80.0, 1.2 for K, r0. All other angle types (2-N) would
be computed with a {cosine} potential with coefficient 50.0 for K.
An angle style of {none} can be specified as an argument to
angle_style hybrid and the corresponding angle_coeff commands, if you
desire to turn off certain angle types.
[Restrictions:] none
[Related commands:]
"angle_coeff"_angle_coeff.html
[Default:] none
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