diff --git a/doc/_sources/pair_body_rounded_polygon.txt b/doc/_sources/pair_body_rounded_polygon.txt deleted file mode 100644 index 7d6a0aeb6..000000000 --- a/doc/_sources/pair_body_rounded_polygon.txt +++ /dev/null @@ -1,123 +0,0 @@ -.. index:: pair_style body/rounded/polygon - -pair_style body/rounded/polygon command -======================================= - -Syntax -"""""" - -.. parsed-literal:: - - pair_style body/rounded/polygon cutoff_global cutoff_inner delta_ua c_n - -* cutoff_global = global cutoff for COM interactions (distance units) -* cutoff_inner = cutoff for vertex-vertex and vertex-edge interactions (distance units) -* delta_ua = characteristic contact length (distance units) -* c_n = normal friction coefficient (energy time/distance^2) - -Examples -"""""""" - -.. parsed-literal:: - - pair_style body/rounded/polygon 6.0 0.5 0.5 0.1 - pair_coeff 1 1 1.0 100.0 12.0 - -Description -""""""""""" - -Style *body/rounded/polygon* implements the pairwise body/body -interactions between 2D convex polygons, as described -in :ref:`Fraige <Fraige>`. This pair style is designed for use with -the "rounded/polygon" body style, which is specified as -an argument to the "atom-style body/rounded/polygon" command. -See the :doc:`body <body>` doc page for more details about the body -styles LAMMPS supports. - -The "rounded/polygon" style treats a body particle as a discrete -element model (DEM) polygon composed of N vertices. -The coordinates of a body particle are its center-of-mass (COM). -The initial position of the vertices are specified the data file. -The current implementation follows the multiple contact points model as -described in :ref:`Fraige <Fraige>`, but neglects and the contact history -the tangential contact forces for now. - -The parameters *delta_ua* and *c_n* are the characteristic contact length -and the normal friction coefficient, respectively. See Eqs. (1) and (5) -in :ref:`Fraige <Fraige>` for more details. - -For style *body/rounded/polygon*, the following coefficients -must be defined for each pair of atoms types via the :doc:`pair_coeff <pair_coeff>` -command as in the examples above: - -* sigma = vertex rounded diameter (distance units) -* k_n = normal repulsion strength (energy/distance^2) -* k_na = normal attraction strength (energy/distance^2) -* cutoff = cutoff for COM interactions (distance units) - -The last parameter is optional. If not specified, the global -cutoff specified in the pair_style command is used. - -Note that the current implementation assumes that the edge length -of the polygons (L) should be at least twice greater than -the vertex rounded radius (sigma) so as to distinguish vertex-vertex from -vertex-edge contacts. - -.. note:: - - Because this pair style requires the body velocities to compute - the friction component of the forces, users should specify - *comm_modify vel yes* in the input script with this pair style. - - ----------- - - -**Mixing, shift, table, tail correction, restart, rRESPA info**: - -For atom type pairs I,J and I != J, the epsilon and sigma coefficients -and cutoff distance for all of this pair style can be mixed. The -default mix value is *geometric*. See the "pair_modify" command for -details. - -This pair style does not support the :doc:`pair_modify <pair_modify>` -shift, table, and tail options. - -This pair style does not write its information to :doc:`binary restart files <restart>`. - -This pair style can only be used via the *pair* keyword of the -:doc:`run_style respa <run_style>` command. It does not support the -*inner*, *middle*, *outer* keywords. - - ----------- - - -Restrictions -"""""""""""" - - -This style is part of the BODY package. It is only enabled if LAMMPS -was built with that package. See the :ref:`Making LAMMPS <2_3>` section for more info. - -Defining particles to be bodies so they participate in body/body or -body/particle interactions requires the use of the :doc:`atom_style body <atom_style>` command. - -Related commands -"""""""""""""""" - -:doc:`pair_coeff <pair_coeff>` - -**Default:** none - -.. _Fraige: - - - -**(Fraige)** F. Y. Fraige, P. A. Langston, A. J. Matchett, J. Dodds, -Particuology, 6, 455 (2008). - - -.. _lws: http://lammps.sandia.gov -.. _ld: Manual.html -.. _lc: Section_commands.html#comm