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< li class = "toctree-l1" > < a class = "reference internal" href = "Section_intro.html" > 1. Introduction< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "Section_accelerate.html" > 5. Accelerating LAMMPS performance< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "pairs.html" > Pair Styles< / a > < / li >
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< li class = "toctree-l1 current" > < a class = "reference internal" href = "angles.html" > Angle Styles< / a > < ul class = "current" >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_charmm.html" > angle_style charmm command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_charmm.html#angle-style-charmm-intel-command" > angle_style charmm/intel command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_charmm.html#angle-style-charmm-kk-command" > angle_style charmm/kk command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_charmm.html#angle-style-charmm-omp-command" > angle_style charmm/omp command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_class2.html" > angle_style class2 command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_class2.html#angle-style-class2-omp-command" > angle_style class2/omp command< / a > < / li >
< li class = "toctree-l2 current" > < a class = "current reference internal" href = "#" > angle_style cosine command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "#angle-style-cosine-omp-command" > angle_style cosine/omp command< / a > < ul >
< li class = "toctree-l3" > < a class = "reference internal" href = "#syntax" > Syntax< / a > < / li >
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< li class = "toctree-l3" > < a class = "reference internal" href = "#related-commands" > Related commands< / a > < / li >
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< li class = "toctree-l2" > < a class = "reference internal" href = "angle_cosine_delta.html" > angle_style cosine/delta command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_cosine_delta.html#angle-style-cosine-delta-omp-command" > angle_style cosine/delta/omp command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_cosine_periodic.html" > angle_style cosine/periodic command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_cosine_periodic.html#angle-style-cosine-periodic-omp-command" > angle_style cosine/periodic/omp command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_cosine_shift.html" > angle_style cosine/shift command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_cosine_shift.html#angle-style-cosine-shift-omp-command" > angle_style cosine/shift/omp command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_cosine_shift_exp.html" > angle_style cosine/shift/exp command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_cosine_shift_exp.html#angle-style-cosine-shift-exp-omp-command" > angle_style cosine/shift/exp/omp command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_cosine_squared.html" > angle_style cosine/squared command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_cosine_squared.html#angle-style-cosine-squared-omp-command" > angle_style cosine/squared/omp command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_dipole.html" > angle_style dipole command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_dipole.html#angle-style-dipole-omp-command" > angle_style dipole/omp command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_fourier.html" > angle_style fourier command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_fourier.html#angle-style-fourier-omp-command" > angle_style fourier/omp command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_fourier_simple.html" > angle_style fourier/simple command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_fourier_simple.html#angle-style-fourier-simple-omp-command" > angle_style fourier/simple/omp command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_harmonic.html" > angle_style harmonic command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_harmonic.html#angle-style-harmonic-intel-command" > angle_style harmonic/intel command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_harmonic.html#angle-style-harmonic-kk-command" > angle_style harmonic/kk command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_harmonic.html#angle-style-harmonic-omp-command" > angle_style harmonic/omp command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_hybrid.html" > angle_style hybrid command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_none.html" > angle_style none command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_quartic.html" > angle_style quartic command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_quartic.html#angle-style-quartic-omp-command" > angle_style quartic/omp command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_sdk.html" > angle_style sdk command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_table.html" > angle_style table command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_table.html#angle-style-table-omp-command" > angle_style table/omp command< / a > < / li >
< li class = "toctree-l2" > < a class = "reference internal" href = "angle_zero.html" > angle_style zero command< / a > < / li >
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< li class = "toctree-l1" > < a class = "reference internal" href = "dihedrals.html" > Dihedral Styles< / a > < / li >
< li class = "toctree-l1" > < a class = "reference internal" href = "impropers.html" > Improper Styles< / a > < / li >
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< a href = "angle_cosine_delta.html" class = "btn btn-neutral float-right" title = "angle_style cosine/delta command" accesskey = "n" > Next < span class = "fa fa-arrow-circle-right" > < / span > < / a >
< a href = "angle_class2.html" class = "btn btn-neutral" title = "angle_style class2 command" accesskey = "p" > < span class = "fa fa-arrow-circle-left" > < / span > Previous< / a >
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< span id = "index-0" > < / span > < h1 > angle_style cosine command< / h1 >
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< h1 > angle_style cosine/omp command< / h1 >
< div class = "section" id = "syntax" >
< h2 > Syntax< / h2 >
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< pre class = "literal-block" >
angle_style cosine
< / pre >
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< / div >
< div class = "section" id = "examples" >
< h2 > Examples< / h2 >
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< pre class = "literal-block" >
angle_style cosine
angle_coeff * 75.0
< / pre >
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< / div >
< div class = "section" id = "description" >
< h2 > Description< / h2 >
< p > The < em > cosine< / em > angle style uses the potential< / p >
< img alt = "_images/angle_cosine.jpg" class = "align-center" src = "_images/angle_cosine.jpg" / >
< p > where K is defined for each angle type.< / p >
< p > The following coefficients must be defined for each angle type via the
< a class = "reference internal" href = "angle_coeff.html" > < span class = "doc" > angle_coeff< / span > < / a > command as in the example above, or in
the data file or restart files read by the < a class = "reference internal" href = "read_data.html" > < span class = "doc" > read_data< / span > < / a >
or < a class = "reference internal" href = "read_restart.html" > < span class = "doc" > read_restart< / span > < / a > commands:< / p >
< ul class = "simple" >
< li > K (energy)< / li >
< / ul >
< hr class = "docutils" / >
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< p > Styles with a < em > gpu< / em > , < em > intel< / em > , < em > kk< / em > , < em > omp< / em > , or < em > opt< / em > suffix are
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functionally the same as the corresponding style without the suffix.
They have been optimized to run faster, depending on your available
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hardware, as discussed in < a class = "reference internal" href = "Section_accelerate.html" > < span class = "doc" > Section 5< / span > < / a >
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of the manual. The accelerated styles take the same arguments and
should produce the same results, except for round-off and precision
issues.< / p >
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< p > These accelerated styles are part of the GPU, USER-INTEL, KOKKOS,
USER-OMP and OPT packages, respectively. They are only enabled if
LAMMPS was built with those packages. See the < a class = "reference internal" href = "Section_start.html#start-3" > < span class = "std std-ref" > Making LAMMPS< / span > < / a > section for more info.< / p >
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< p > You can specify the accelerated styles explicitly in your input script
by including their suffix, or you can use the < a class = "reference internal" href = "Section_start.html#start-7" > < span class = "std std-ref" > -suffix command-line switch< / span > < / a > when you invoke LAMMPS, or you can
use the < a class = "reference internal" href = "suffix.html" > < span class = "doc" > suffix< / span > < / a > command in your input script.< / p >
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< p > See < a class = "reference internal" href = "Section_accelerate.html" > < span class = "doc" > Section 5< / span > < / a > of the manual for
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more instructions on how to use the accelerated styles effectively.< / p >
< / div >
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< div class = "section" id = "restrictions" >
< h2 > Restrictions< / h2 >
< p > This angle style can only be used if LAMMPS was built with the
MOLECULE package (which it is by default). See the < a class = "reference internal" href = "Section_start.html#start-3" > < span class = "std std-ref" > Making LAMMPS< / span > < / a > section for more info on packages.< / p >
< / div >
< div class = "section" id = "related-commands" >
< h2 > Related commands< / h2 >
< p > < a class = "reference internal" href = "angle_coeff.html" > < span class = "doc" > angle_coeff< / span > < / a > < / p >
< p > < strong > Default:< / strong > none< / p >
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