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Fixing incorrect arg for pair gran

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This commit is contained in:
Joel Clemmer
2021-03-31 17:25:41 -06:00
parent 8b2676a103
commit 8b37f3c044
5 changed files with 12 additions and 25 deletions
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14
doc/src/fix_wall_gran.rst
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@ -29,6 +29,7 @@ Syntax
gamma_t = damping coefficient for collisions in tangential direction (1/time units or 1/time-distance units - see discussion below)
xmu = static yield criterion (unitless value between 0.0 and 1.0e4)
dampflag = 0 or 1 if tangential damping force is excluded or included
optional keyword = *limit_damping*, limit damping to prevent attractive interaction
.. parsed-literal::
@ -45,7 +46,7 @@ Syntax
radius = cylinder radius (distance units)
* zero or more keyword/value pairs may be appended to args
* keyword = *wiggle* or *shear* or *contacts* or *no_attraction*
* keyword = *wiggle* or *shear* or *contacts*
.. parsed-literal::
@ -58,8 +59,6 @@ Syntax
vshear = magnitude of shear velocity (velocity units)
*contacts* value = none
generate contact information for each particle
*no_attraction* value = none
turn off possibility of attractive interactions
Examples
@ -97,7 +96,8 @@ Specifically, delta = radius - r = overlap of particle with wall, m_eff
= mass of particle, and the effective radius of contact = RiRj/Ri+Rj is
set to the radius of the particle.
The parameters *Kn*\ , *Kt*\ , *gamma_n*, *gamma_t*, *xmu* and *dampflag*
The parameters *Kn*\ , *Kt*\ , *gamma_n*, *gamma_t*, *xmu*, *dampflag*,
and the optional keyword *limit_damping*
have the same meaning and units as those specified with the
:doc:`pair_style gran/\* <pair_gran>` commands. This means a NULL can be
used for either *Kt* or *gamma_t* as described on that page. If a
@ -177,12 +177,6 @@ the clockwise direction for *vshear* > 0 or counter-clockwise for
*vshear* < 0. In this case, *vshear* is the tangential velocity of
the wall at whatever *radius* has been defined.
If a particle is moving away from the wall while in contact, there
is a possibility that the particle could experience an effective attractive
force due to damping. If the *no_attraction* keyword is used, this fix
will zero out the normal component of the force if there is an effective
attractive force. This keyword cannot be used with the JKR or DMT models.
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""
This fix writes the shear friction state of atoms interacting with the

9
doc/src/fix_wall_gran_region.rst
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@ -183,7 +183,8 @@ radius - r = overlap of particle with wall, m_eff = mass of particle,
and the effective radius of contact is just the radius of the
particle.
The parameters *Kn*\ , *Kt*\ , *gamma_n*, *gamma_t*, *xmu* and *dampflag*
The parameters *Kn*\ , *Kt*\ , *gamma_n*, *gamma_t*, *xmu*, *dampflag*,
and the optional keyword *limit_damping*
have the same meaning and units as those specified with the
:doc:`pair_style gran/\* <pair_gran>` commands. This means a NULL can be
used for either *Kt* or *gamma_t* as described on that page. If a
@ -201,12 +202,6 @@ values for the 6 wall/particle coefficients than for particle/particle
interactions. E.g. if you wish to model the wall as a different
material.
If a particle is moving away from the wall while in contact, there
is a possibility that the particle could experience an effective attractive
force due to damping. If the *no_attraction* keyword is used, this fix
will zero out the normal component of the force if there is an effective
attractive force. This keyword cannot be used with the JKR or DMT models.
Restart, fix_modify, output, run start/stop, minimize info
"""""""""""""""""""""""""""""""""""""""""""""""""""""""""""

6
doc/src/pair_gran.rst
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@ -40,8 +40,8 @@ Syntax
.. parsed-literal::
*no_attraction* value = none
turn off possibility of attractive interactions
*limit_damping* value = none
limit damping to prevent attractive interaction
.. note::
@ -217,7 +217,7 @@ potential.
If two particles are moving away from each other while in contact, there
is a possibility that the particles could experience an effective attractive
force due to damping. If the *no_attraction* keyword is used, this fix
force due to damping. If the *limit_damping* keyword is used, this fix
will zero out the normal component of the force if there is an effective
attractive force.

2
doc/src/pair_granular.rst
View File

@ -625,7 +625,7 @@ Finally, the twisting torque on each particle is given by:
If two particles are moving away from each other while in contact, there
is a possibility that the particles could experience an effective attractive
force due to damping. If the optional *no_attraction* keyword is used, this fix
force due to damping. If the optional *limit_damping* keyword is used, this fix
will zero out the normal component of the force if there is an effective
attractive force. This keyword cannot be used with the JKR or DMT models.