jianmu
/
lammps
forked from lijiext/lammps
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@10729 f3b2605a-c512-4ea7-a41b-209d697bcdaa

This commit is contained in:
sjplimp 2013-09-05 23:10:50 +00:00
parent 2ba239f94d
commit 8f986a885b
4 changed files with 14 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
doc/fix_wall_gran.html
View File

@ -27,7 +27,7 @@
<LI>gamma_t = damping coefficient for collisions in tangential direction (1/time units or 1/time-distance units - see discussion below)
<LI>xmu = static yield criterion (unitless fraction between 0.0 and 1.0)
<LI>xmu = static yield criterion (unitless value between 0.0 and 1.0e4)
<LI>dampflag = 0 or 1 if tangential damping force is excluded or included

2
doc/fix_wall_gran.txt
View File

@ -18,7 +18,7 @@ Kn = elastic constant for normal particle repulsion (force/distance units or pre
Kt = elastic constant for tangential contact (force/distance units or pressure units - see discussion below) :l
gamma_n = damping coefficient for collisions in normal direction (1/time units or 1/time-distance units - see discussion below) :l
gamma_t = damping coefficient for collisions in tangential direction (1/time units or 1/time-distance units - see discussion below) :l
xmu = static yield criterion (unitless fraction between 0.0 and 1.0) :l
xmu = static yield criterion (unitless value between 0.0 and 1.0e4) :l
dampflag = 0 or 1 if tangential damping force is excluded or included :l
wallstyle = {xplane} or {yplane} or {zplane} or {zcylinder} :l
args = list of arguments for a particular style :l

7
doc/pair_gran.html
View File

@ -37,7 +37,7 @@
<LI>gamma_t = damping coefficient for collisions in tangential direction (1/time units or 1/time-distance units - see discussion below)
<LI>xmu = static yield criterion (unitless fraction between 0.0 and 1.0)
<LI>xmu = static yield criterion (unitless value between 0.0 and 1.0e4)
<LI>dampflag = 0 or 1 if tangential damping force is excluded or included
</UL>
@ -162,6 +162,11 @@ dash-pot model until Ft/Fn = xmu and is then held at Ft = Fn*xmu until
the particles lose contact. In the Hertzian case, a similar analogy
holds, though the spring is no longer linear.
</P>
<P>IMPORTANT NOTE: Normally, xmu should be specified as a fractional
value between 0.0 and 1.0, however LAMMPS allows large values (up to
1.0e4) to allow for modeling of systems which can sustain very large
tangential forces.
</P>
<P>For granular styles there are no additional coefficients to set for
each pair of atom types via the <A HREF = "pair_coeff.html">pair_coeff</A> command.
All settings are global and are made via the pair_style command.

7
doc/pair_gran.txt
View File

@ -23,7 +23,7 @@ Kn = elastic constant for normal particle repulsion (force/distance units or pre
Kt = elastic constant for tangential contact (force/distance units or pressure units - see discussion below) :l
gamma_n = damping coefficient for collisions in normal direction (1/time units or 1/time-distance units - see discussion below) :l
gamma_t = damping coefficient for collisions in tangential direction (1/time units or 1/time-distance units - see discussion below) :l
xmu = static yield criterion (unitless fraction between 0.0 and 1.0) :l
xmu = static yield criterion (unitless value between 0.0 and 1.0e4) :l
dampflag = 0 or 1 if tangential damping force is excluded or included :l,ule
IMPORTANT NOTE: Versions of LAMMPS before 9Jan09 had different style
@ -148,6 +148,11 @@ dash-pot model until Ft/Fn = xmu and is then held at Ft = Fn*xmu until
the particles lose contact. In the Hertzian case, a similar analogy
holds, though the spring is no longer linear.
IMPORTANT NOTE: Normally, xmu should be specified as a fractional
value between 0.0 and 1.0, however LAMMPS allows large values (up to
1.0e4) to allow for modeling of systems which can sustain very large
tangential forces.
For granular styles there are no additional coefficients to set for
each pair of atom types via the "pair_coeff"_pair_coeff.html command.
All settings are global and are made via the pair_style command.