forked from lijiext/lammps
more doc tweaks
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@ -186,7 +186,7 @@ squares with rounded circles at the vertices. Special cases for N = 1
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(circle) and N = 2 (rod with rounded ends) can also be specified.
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One use of this body style is for 2d discrete element models, as
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described in "Fraige"_#Fraige.
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described in "Fraige"_#body-Fraige.
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Similar to body style {nparticle}, the atom_style body command for
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this body style takes two additional arguments:
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@ -292,7 +292,7 @@ for N = 1 (sphere) and N = 2 (rod with rounded ends) can also be
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specified.
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This body style is for 3d discrete element models, as described in
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"Wang"_#Wang.
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"Wang"_#body-Wang.
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Similar to body style {rounded/polygon}, the atom_style body command
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for this body style takes two additional arguments:
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@ -447,10 +447,10 @@ determined by the {bflag1} parameter for the {body} keyword. The
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:line
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:link(Fraige)
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:link(body-Fraige)
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[(Fraige)] F. Y. Fraige, P. A. Langston, A. J. Matchett, J. Dodds,
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Particuology, 6, 455 (2008).
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:link(Wang)
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:link(body-Wang)
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[(Wang)] J. Wang, H. S. Yu, P. A. Langston, F. Y. Fraige, Granular
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Matter, 13, 1 (2011).
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@ -280,7 +280,8 @@ fix_vector.html
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fix_viscosity.html
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fix_viscous.html
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fix_wall.html
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fix_wall_ees.html
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fix_wall_body_polygon.html
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fix_wall_body_polyhedron.html
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fix_wall_gran.html
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fix_wall_gran_region.html
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fix_wall_piston.html
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@ -419,8 +420,9 @@ pair_agni.html
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pair_airebo.html
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pair_awpmd.html
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pair_beck.html
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pair_body.html
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pair_body_nparticle.html
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pair_body_rounded_polygon.html
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pair_body_rounded_polyhedron.html
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pair_bop.html
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pair_born.html
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pair_brownian.html
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@ -35,9 +35,9 @@ body/body interactions which can include body particles modeled as
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rounded/polygon particles.
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This pairwise interaction between rounded polygons is described in
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"Fraige"_#Fraige, where a polygon does not have sharp corners, but is
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rounded at its vertices by circles centered on each vertex with a
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specified diameter. The edges of the polygon are defined between
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"Fraige"_#pair-Fraige, where a polygon does not have sharp corners,
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but is rounded at its vertices by circles centered on each vertex with
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a specified diameter. The edges of the polygon are defined between
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pairs of adjacent vertices. The circle diameter for each polygon is
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specified in the data file read by the "read data"_read_data.html
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command. This is a 2d discrete element model (DEM) which allows for
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@ -79,7 +79,7 @@ Note that F_n and F_t are functions of the surface separation \delta_n
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+ r_c, that is, 0 < \delta_n < r_c, the cohesive region of the two
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surfaces overlap and the two surfaces are attractive to each other.
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In "Fraige"_#Fraige, the tangential friction force between two
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In "Fraige"_#pair-Fraige, the tangential friction force between two
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particles that are in contact is modeled differently prior to gross
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sliding (i.e. static friction) and during gross-sliding (kinetic
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friction). The latter takes place when the tangential deformation
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@ -129,6 +129,6 @@ for pair interactions.
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[Default:] none
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:link(Fraige)
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:link(pair-Fraige)
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[(Fraige)] F. Y. Fraige, P. A. Langston, A. J. Matchett, J. Dodds,
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Particuology, 6, 455 (2008).
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@ -34,15 +34,15 @@ body/body interactions which can include body particles modeled as
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"body"_body.html doc page for more details on using body
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rounded/polyhedron particles.
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This pairwise interaction between the rounded polyhedra is described in
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"Wang"_#Wang, where a polyhedron does not have sharp corners and
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edges, but is rounded at its vertices and edges by spheres centered on
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each vertex with a specified diameter. The edges if the polyhedron
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are defined between pairs of adjacent vertices. Its faces are defined
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by a loop of edges. The sphere diameter for each polygon is specified
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in the data file read by the "read data"_read_data.html command. This
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is a discrete element model (DEM) which allows for multiple contact
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points.
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This pairwise interaction between the rounded polyhedra is described
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in "Wang"_#pair-Wang, where a polyhedron does not have sharp corners
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and edges, but is rounded at its vertices and edges by spheres
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centered on each vertex with a specified diameter. The edges if the
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polyhedron are defined between pairs of adjacent vertices. Its faces
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are defined by a loop of edges. The sphere diameter for each polygon
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is specified in the data file read by the "read data"_read_data.html
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command. This is a discrete element model (DEM) which allows for
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multiple contact points.
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Note that when two particles interact, the effective surface of each
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polyhedron particle is displaced outward from each of its vertices,
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@ -74,15 +74,16 @@ and edge-face overlaps are given by:
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:c,image(JPG/pair_body_rounded.jpg)
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In "Wang"_#Wang, the tangential friction force between two particles
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that are in contact is modeled differently prior to gross sliding
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(i.e. static friction) and during gross-sliding (kinetic friction).
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The latter takes place when the tangential deformation exceeds the
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Coulomb frictional limit. In the current implementation, however, we
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do not take into account frictional history, i.e. we do not keep track
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of how many time steps the two particles have been in contact nor
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calculate the tangential deformation. Instead, we assume that gross
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sliding takes place as soon as two particles are in contact.
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In "Wang"_#pair-Wang, the tangential friction force between two
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particles that are in contact is modeled differently prior to gross
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sliding (i.e. static friction) and during gross-sliding (kinetic
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friction). The latter takes place when the tangential deformation
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exceeds the Coulomb frictional limit. In the current implementation,
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however, we do not take into account frictional history, i.e. we do
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not keep track of how many time steps the two particles have been in
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contact nor calculate the tangential deformation. Instead, we assume
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that gross sliding takes place as soon as two particles are in
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contact.
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The following coefficients must be defined for each pair of atom types
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via the "pair_coeff"_pair_coeff.html command as in the examples above,
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@ -123,7 +124,7 @@ for pair interactions.
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[Default:] none
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:link(Wang)
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:link(pair-Wang)
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[(Wang)] J. Wang, H. S. Yu, P. A. Langston, F. Y. Fraige, Granular
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Matter, 13, 1 (2011).
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