New question #230139 on Yade:
https://answers.launchpad.net/yade/+question/230139
Dear Jan Stránský and Bruno Chareyre and all users:
Thanks for helping me yesterday, so there are two methods now for me to
get a correct clumps generation in 2D simulation. The first one is that making
a generation using PFC2D and then importing the information.txt to YADE. But I
failed to get a correct simulation in this way and gave the reason yesterday.
So the other way is to generate the clumps directly in YADE with "itertools" in
Python. I use the commands below and sucessfully get a 2D clumps in YADE.
from yade import utils,pack,export,qt
import gts,os,random,itertools
from numpy import *
clumpColor=(0, 1, 0)
for k,l in itertools.product(arange(0,40),arange(0,20)):
clpId,sphId=O.bodies.appendClumped([\
utils.sphere([k-0.15,l-0.15,0],material=dfltSpheresMat,color=clumpColor,radius=0.15),\
utils.sphere([k+0.15,l-0.15,0],material=dfltSpheresMat,color=clumpColor,radius=0.15),\
utils.sphere([k+0.15,l+0.15,0],material=dfltSpheresMat,color=clumpColor,radius=0.15),\
utils.sphere([k-0.15,l+0.15,0],material=dfltSpheresMat,color=clumpColor,radius=0.15)\
])
Of course, there are two steps for generating in this way. The first steps is
to define a "unit cell of clumps", which can be comprised by a number of
spheres with specific coordinates and radii that can be determined as
required(just like that I employed four spheres to form this cell in
script).The second steps is to do a loop operation for generate clumps using
the orders "for k,l in itertools.product(arange(0,40),arange(0,20)):". The
number of generation in X Direction is 40 and in Y Direction is 20.
I think this method can be sucessfully used but is not suitable for me for this
is a rule generation method but I wanna get a random generation.
My expectation can described as that: after the "unit cell" defination
finished, I want to get all clumps with random positions in specific region,
just like that "SpherePack in cellbox". In other words, I want to employ some
other ways just in my second steps working to replace the rule generation into
the random generation. As you know, I tested the class "sp.makeClumpCloud" to
do this but failed(this class can only be used in 3D simulation).How can I do
this. Seeking your help!
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