Question #295745 on Yade changed:
https://answers.launchpad.net/yade/+question/295745
VG posted a new comment:
Hello Bruno,
Thanks for your response.
So in the current implementation, the bending moment and twisting moment
act on the particle but do not contribute to the breakage of bonds
New question #295745 on Yade:
https://answers.launchpad.net/yade/+question/295745
Hello,
I am using Law2_ScGeom6D_CohFrictPhys_CohesionMoment with
momentRotationLaw=True; also the default behavior: fragile=True.
For the breakage of the cohesive bond, from what I see in
Question #293295 on Yade changed:
https://answers.launchpad.net/yade/+question/293295
VG posted a new comment:
Regarding the above solution, it should be
i.phys.unp = i.geom.penetrationDepth
instead of
i.phys.unp = 0
#to make it initially force free
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Question #295035 on Yade changed:
https://answers.launchpad.net/yade/+question/295035
Status: Answered => Solved
VG confirmed that the question is solved:
Thanks Bruno, I will also post a comment in the other post if someone
else follows this.
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Question #295035 on Yade changed:
https://answers.launchpad.net/yade/+question/295035
VG posted a new comment:
Thanks for your response, Jerome!
If I understood it correctly, in compressive situations, if I don't
change the unp value a second time, the normal force would be given by
kn*(un
Question #295035 on Yade changed:
https://answers.launchpad.net/yade/+question/295035
VG posted a new comment:
Hello Bruno,
Thanks for your response. That clears my first question.
For the second question, I meant to ask that for subsequent iterations,
whether this value of unp stay
New question #295035 on Yade:
https://answers.launchpad.net/yade/+question/295035
Hello all,
Based on the discussion here:
https://answers.launchpad.net/yade/+question/257058
I am using:
for i in O.interactions:
i.phys.unp = i.geom.penetrationDepth
to nullify the initial contact forces and
Question #293955 on Yade changed:
https://answers.launchpad.net/yade/+question/293955
Status: Open => Solved
VG confirmed that the question is solved:
Thanks Jan Stránský, that solved my question.
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New question #294792 on Yade:
https://answers.launchpad.net/yade/+question/294792
Hello everyone,
I am trying to generate a packing of agglomerates which should be both dense
and stable. I am using the procedure described here:
https://github.com/yade/trunk/tree/master/examples/agglomerate
Question #293955 on Yade changed:
https://answers.launchpad.net/yade/+question/293955
VG posted a new comment:
Sure, Thanks Bruno. I have posted a new question for this packing related issue:
https://answers.launchpad.net/yade/+question/294792
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Question #293955 on Yade changed:
https://answers.launchpad.net/yade/+question/293955
VG posted a new comment:
Thanks a lot, Jan!
A combination of unloading the sample in compress.py and the use of
following in main simulation gets the desired packing and initial
conditions:
for b in O.bodies
Question #293955 on Yade changed:
https://answers.launchpad.net/yade/+question/293955
Status: Answered => Open
VG is still having a problem:
Thanks a lot Jan, that did the trick!
I am facing another challenge with the dense packing generated this way.
When I use this packing in the m
Question #293955 on Yade changed:
https://answers.launchpad.net/yade/+question/293955
VG posted a new comment:
Thanks Jan!
So after using TriaxialStressController in compress.py, I get the position of
the walls by using O.bodies[].state.pos.
This gives me the dimension and location
Question #293955 on Yade changed:
https://answers.launchpad.net/yade/+question/293955
VG posted a new comment:
Hello Jan,
I have a follow-up question: I modified the compress.py script a little
bit to generate a periodic packing. Now, how do I use this compressed
packing in my main periodic
Question #293955 on Yade changed:
https://answers.launchpad.net/yade/+question/293955
VG posted a new comment:
That's awesomeThanks Jan!
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Question #293955 on Yade changed:
https://answers.launchpad.net/yade/+question/293955
Status: Answered => Open
VG is still having a problem:
>yes, with dense pack you would have this problem by default.. You have to
> use some other trick :-) As there has been a couple of
Question #293955 on Yade changed:
https://answers.launchpad.net/yade/+question/293955
Status: Answered => Open
VG is still having a problem:
Hi Jan,
Thanks a lot for your response.
I will study this more and try to figure out how I can set up my
simulation this way. Are there any exam
Question #293955 on Yade changed:
https://answers.launchpad.net/yade/+question/293955
Status: Answered => Open
VG is still having a problem:
Hello Jerome,
Thanks for your response.
By using the above MWE script, I am able to create the cohesive bonds
the way I want which also required s
Question #293955 on Yade changed:
https://answers.launchpad.net/yade/+question/293955
Status: Answered => Open
VG is still having a problem:
Hi Jerome,
In my simulation, I am not using clumps because clump would have rigid
aggregate of individual particles. Instead, the aggregates I
New question #293955 on Yade:
https://answers.launchpad.net/yade/+question/293955
Hello everyone,
I am generating a pack of spheres (lets call them aggregates), using makeCloud.
Each of those spheres consists of a packing of smaller particles glued together
using cohesive material model. I am
Question #293295 on Yade changed:
https://answers.launchpad.net/yade/+question/293295
VG posted a new comment:
Thanks Bruno, that solved the issue I was facing.
Also, can you please recommend me a good reference for the CohFrictMat
and cohesive model ?
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Question #293295 on Yade changed:
https://answers.launchpad.net/yade/+question/293295
Status: Answered => Solved
VG confirmed that the question is solved:
Thanks Bruno Chareyre, that solved my question.
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Question #293295 on Yade changed:
https://answers.launchpad.net/yade/+question/293295
VG posted a new comment:
Thanks Huanran, I will look into it further on the lines of what you
suggested.
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Question #293295 on Yade changed:
https://answers.launchpad.net/yade/+question/293295
VG posted a new comment:
Hello Huanran,
Thanks for your response, that makes sense.
So it seems like I can not reset the value of shearCohesion/normalCohesion for
existing interactions created with higher
Question #293295 on Yade changed:
https://answers.launchpad.net/yade/+question/293295
Status: Solved => Open
VG is still having a problem:
Thanks Jan!
Thanks to Bruno, I actually found part of the solution here:
https://answers.launchpad.net/yade/+question/256364
Howe
Question #293295 on Yade changed:
https://answers.launchpad.net/yade/+question/293295
Status: Answered => Solved
VG confirmed that the question is solved:
Thanks Jan!
Thanks to Bruno, I actually found part of the solution here:
https://answers.launchpad.net/yade/+question/256364
Howe
New question #293295 on Yade:
https://answers.launchpad.net/yade/+question/293295
Hello everyone,
Here is a description of the problem I am trying to solve:
-- I have a granular sample with spherical particles of diameters D1, D2, D3
etc. All of such big particles (lets call them agglomerates)
Question #292846 on Yade changed:
https://answers.launchpad.net/yade/+question/292846
Status: Answered => Open
VG is still having a problem:
Okay I see, Thanks Jan!
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Question #292846 on Yade changed:
https://answers.launchpad.net/yade/+question/292846
VG posted a new comment:
Thanks for your response, Jan!
For the generation of big aggregates, one of the procedures you suggested is
not very clear to me:
>"- use something like randomDensePack on
Question #292846 on Yade changed:
https://answers.launchpad.net/yade/+question/292846
Status: Answered => Open
VG is still having a problem:
Thinking about this problem more, this might not actually be a bug. As you
outlined, the difference between the previous version and "fixed&
Question #292911 on Yade changed:
https://answers.launchpad.net/yade/+question/292911
VG posted a new comment:
Hello Jan,
Thanks a lot for providing these functions!
I am noticing something strange though, may be I am misinterpreting it.
Running the same script with a seed value of 1
Question #292846 on Yade changed:
https://answers.launchpad.net/yade/+question/292846
VG posted a new comment:
Hello Jan,
Thanks for your help.
Do you know when yadedaily would be updated again or usually how often is it
updated ?
Thanks for your tip about the seed, while using makeCloud. I
Question #292846 on Yade changed:
https://answers.launchpad.net/yade/+question/292846
VG posted a new comment:
I got the update last week, but it is still showing me the problematic
overlap. From what I see, the overlap is usually between the two
particles of different aggregates (spheres
Question #292911 on Yade changed:
https://answers.launchpad.net/yade/+question/292911
VG posted a new comment:
Hello Jan,
I have defined sample_material as CohFrictMat and also using
Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=True,label="cohesiveIp")
in the interaction
Question #292846 on Yade changed:
https://answers.launchpad.net/yade/+question/292846
VG posted a new comment:
Hello Jan,
I installed Yade using the below instructions for pre-built package on
website: https://yade-dem.org/doc/installation.html
sudo bash -c 'echo "deb http://www.yade-de
Question #292911 on Yade changed:
https://answers.launchpad.net/yade/+question/292911
VG posted a new comment:
Hello Jan,
Thanks for your response. The script seems to be running fine. Is there
a problem with the interactions in my model set up ?
Regards
Varun
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New question #292911 on Yade:
https://answers.launchpad.net/yade/+question/292911
Hello,
I am trying to model crushing of aggregates of particles and look at the
resulting fragment size distribution. The model consists of an assembly of
spheres (each sphere is composed of constituent smaller
New question #292846 on Yade:
https://answers.launchpad.net/yade/+question/292846
I am generating a pack of spheres (lets call them aggregates), using makeCloud.
Each of those spheres consists of a packing of smaller particles glued together
using cohesive material model. I am using
Question #290950 on Yade changed:
https://answers.launchpad.net/yade/+question/290950
Status: Answered => Solved
VG confirmed that the question is solved:
Thanks Jan Stránský, that solved my question.
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Question #290950 on Yade changed:
https://answers.launchpad.net/yade/+question/290950
VG posted a new comment:
I am using version 1.07.0
The output of the two commands are as follows:
O.bodies[top_id].state.mass
0.0
O.bodies[top_id].state.inertia
Vector3(nan,nan,nan)
Thanks
Varun
--
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Question #290950 on Yade changed:
https://answers.launchpad.net/yade/+question/290950
VG posted a new comment:
Thanks Jan!
I modified the generation of top and bottom boxes as you suggested. The boxes
seem to be generated the way they should be. However, as soon as the simulation
starts, those
Question #290950 on Yade changed:
https://answers.launchpad.net/yade/+question/290950
VG posted a new comment:
Hello Jan,
Thanks for your response. I tried what you suggested, i.e. one small box
(1/3 of the periodic cell), but it still seems to have the same problem
and the top box is just
Question #290933 on Yade changed:
https://answers.launchpad.net/yade/+question/290933
VG posted a new comment:
Thanks for your response, Bettina!
Yes the work around which Bruno suggested doesn't work for me either.
May be I will have to change the problem set up, but at this point I
don't know
Question #290950 on Yade changed:
https://answers.launchpad.net/yade/+question/290950
VG posted a new comment:
Hi Bruno,
Thanks for your response.
I tried to incorporate the changes you suggested, but the problem still
doesn't seem to go away. Also, another perplexing thing I notice from
Question #290933 on Yade changed:
https://answers.launchpad.net/yade/+question/290933
VG requested more information:
Hello Bettina,
Were you able to resolve this issue or find a work around ? I continue
to face this problem and have posted a minimal working example at :
https
Question #290950 on Yade changed:
https://answers.launchpad.net/yade/+question/290950
Status: Answered => Open
VG is still having a problem:
Below is one minimal working example which shows such problem. I am trying to
compress an assembly of particles between the two plates. The top pl
Question #291114 on Yade changed:
https://answers.launchpad.net/yade/+question/291114
VG posted a new comment:
Hello Jan,
Thanks for your response. The script I am running is fairly large. Also,
I just realized that it is using O.dt=0.5*PWaveTimeStep(), and there is
an algorithm in the script
Question #290950 on Yade changed:
https://answers.launchpad.net/yade/+question/290950
VG posted a new comment:
Hello Bettina,
Thanks for your note. Yes, the problem seems similar.
Also, on taking a closer look, I notice that after some simulation time
some particles seem to be overlapping. Does
New question #291114 on Yade:
https://answers.launchpad.net/yade/+question/291114
I am new to Yade and this question might sound a little silly. I am running a
Yade simulation and from the controller, when I look at the virtual time at any
given instant, it is not equal to Number of iterations
Question #290950 on Yade changed:
https://answers.launchpad.net/yade/+question/290950
VG posted a new comment:
Thanks for your response, Jan!
I will get the MWE and post it here.
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Question #258444 on Yade changed:
https://answers.launchpad.net/yade/+question/258444
VG posted a new comment:
Sure, Thanks Bruno. I have posted it as a new question:
https://answers.launchpad.net/yade/+question/290950
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New question #290950 on Yade:
https://answers.launchpad.net/yade/+question/290950
I intend to create a cloud of spheres in a box which has:
- periodic boundary conditions for all vertical walls
- and rigid floor & ceiling
I am applying compression from the ceiling. Now, what I observe is that
Question #258444 on Yade changed:
https://answers.launchpad.net/yade/+question/258444
VG posted a new comment:
I am experiencing a similar problem and the material properties I am
using are as follows:
For the floor and ceiling: FrictMat( young=200e9, poisson=0.3,
density=8000. ,frictionAngle
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