Question #251328 on Yade changed:
https://answers.launchpad.net/yade/+question/251328
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Dear Andy,
Viscous work should be updated each time one contact is computed, just like
plastic dissipation. The best place to do
Question #251125 on Yade changed:
https://answers.launchpad.net/yade/+question/251125
Bruno Chareyre proposed the following answer:
@Alex-Cheng: no, no, no. Yade is not using any unit.
@Emon, google is your friend if you don't like to do the math [1]:
force: F dyne | dyn | g·cm/s2 | 10−5
Question #250783 on Yade changed:
https://answers.launchpad.net/yade/+question/250783
Status: Open = Answered
Bruno Chareyre proposed the following answer:
O.usesTimeStepper is not an attribute of O.
O.dynDt is probably what you want.
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Question #250103 on Yade changed:
https://answers.launchpad.net/yade/+question/250103
Bruno Chareyre posted a new comment:
I am quite sure you can install yade on 10.04. Simply, it will be an old
version of it.
The problem must what Anton is mentionning: installing yade from 13.10 repos
Question #250463 on Yade changed:
https://answers.launchpad.net/yade/+question/250463
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Hi,
I can't reproduce what you report.
What version of yade are you using? And does the script come from the
same version?
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Question #250463 on Yade changed:
https://answers.launchpad.net/yade/+question/250463
Bruno Chareyre proposed the following answer:
If you install the documentation package for 0.70.0-5 you will find the example
scripts on your HD.
Copy/paste of scripts from a web page is not supposed to work
Question #250103 on Yade changed:
https://answers.launchpad.net/yade/+question/250103
Bruno Chareyre proposed the following answer:
Did you try installing other variants, like yade-daily or just yade?
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Question #249707 on Yade changed:
https://answers.launchpad.net/yade/+question/249707
Status: Open = Answered
Bruno Chareyre proposed the following answer:
It is already implemented I think. A difference is that the paper
imposes equilibrium as a constraint, while typical DEM (namely Yade
Question #249669 on Yade changed:
https://answers.launchpad.net/yade/+question/249669
Status: Open = Answered
Bruno Chareyre proposed the following answer:
I expected the force on each sphere should be dissipated 1/2 from the
previous force because I set up the resttitution coefficient
Question #247006 on Yade changed:
https://answers.launchpad.net/yade/+question/247006
Bruno Chareyre proposed the following answer:
Yes, the github version has a Maxwell model on shear force and twist moment.
B
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Question #249117 on Yade changed:
https://answers.launchpad.net/yade/+question/249117
Status: Open = Answered
Bruno Chareyre proposed the following answer:
targetDt can be anything, it doesn't matter. You need to think in a per
iteration way for e.g. strain rate, and then it doesn't matter
Question #248466 on Yade changed:
https://answers.launchpad.net/yade/+question/248466
Bruno Chareyre posted a new comment:
There is a validation in [1], but it is only for the elastic part of the
law.
The other things (e.g. rolling friction) have been (and are being) used
many times by serious
Question #248644 on Yade changed:
https://answers.launchpad.net/yade/+question/248644
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Dear Diego, there are ample references in the documentation to published papers
on the fluid coupling. See Catalano's papers
Question #248466 on Yade changed:
https://answers.launchpad.net/yade/+question/248466
Bruno Chareyre proposed the following answer:
Could some one please direct me to the papers that contain the exact
contact law for Cundall Strack (ElasticContactLaw) that used in Yade
The best reference
Question #248315 on Yade changed:
https://answers.launchpad.net/yade/+question/248315
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Dear Fu,
I suggest to study the pdf and example scripts that you will find in
examples/triax-tutorial. They should answer most of your
Question #248206 on Yade changed:
https://answers.launchpad.net/yade/+question/248206
Bruno Chareyre proposed the following answer:
So, can I conclude that in the case of a cylindrical sample composed of
a random packing...
Erm.. not really. If you change your question I may also change my
Question #248206 on Yade changed:
https://answers.launchpad.net/yade/+question/248206
Bruno Chareyre proposed the following answer:
To me, this column test is better described by a force-displacement relation.
Of course you can convert this to stress-strain if you define the height and
cross
Question #247806 on Yade changed:
https://answers.launchpad.net/yade/+question/247806
Bruno Chareyre proposed the following answer:
@Ning,
I see two possible simple solutions to your problem:
One needs cpu time (see example below):
dtheta=0.01 #something small (aka rotation per timestep)
thetaDot
Question #248246 on Yade changed:
https://answers.launchpad.net/yade/+question/248246
Bruno Chareyre proposed the following answer:
As for moving the object I use PyRunner and in every time step I change
its position.
Don't do that, as Jerome suggests. See also:
https://yade-dem.org/doc
Question #247806 on Yade changed:
https://answers.launchpad.net/yade/+question/247806
Bruno Chareyre proposed the following answer:
I think velGrad=Matrix3(0,sin(theta),0, -sin(theta),0,0, 0,0,0) is correct
asymptoticaly for small spin*dt.
If you really need a large rotation in one step, I'm
Question #246971 on Yade changed:
https://answers.launchpad.net/yade/+question/246971
Bruno Chareyre posted a new comment:
It can all be adjusted with appropriate parameters:
- Use high stifness during the compaction, so the rebound during unloading will
be negligible
- set a very small target
Question #247142 on Yade changed:
https://answers.launchpad.net/yade/+question/247142
Status: Open = Answered
Bruno Chareyre proposed the following answer:
I've seen Burger model implemented in Yade while a journal paper (from
Knoxville's group IIRC) but it has never been pushed to trunk
Question #247006 on Yade changed:
https://answers.launchpad.net/yade/+question/247006
Bruno Chareyre proposed the following answer:
1 Compile (https://yade-dem.org/doc/installation.html)
2. mess up a contact law
3. compile again (make install)
If you would like to make this new law public, which
Question #247142 on Yade changed:
https://answers.launchpad.net/yade/+question/247142
Bruno Chareyre proposed the following answer:
Yes, or ask Jingsong Chen...
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/fa44970d34df040e8f62b304d69587caa3155938
[2] see this thread and fllow-ups:
https://lists.launchpad.net/yade-dev/msg10498.html
[3] https://yade-dem.org/wiki/Performance_Test
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Question #246971 on Yade changed:
https://answers.launchpad.net/yade/+question/246971
Status: Open = Answered
Bruno Chareyre proposed the following answer:
But I think I can't use the triax engine in my case. Because there
shouldn't be any confining pressure applied on the spheres
Question #246489 on Yade changed:
https://answers.launchpad.net/yade/+question/246489
Bruno Chareyre proposed the following answer:
Behzad, see bug https://bugs.launchpad.net/yade/+bug/1304878
One way to get yade running parallel (I mean if you don't want to wait for the
bugfix) is to uninstall
Question #246489 on Yade changed:
https://answers.launchpad.net/yade/+question/246489
Bruno Chareyre proposed the following answer:
I see that, in your case, most of the time is spent in NewtonIntegrator.
And it seems vectorization is inefficient for that one. This is surprising. I
think I saw
Question #246489 on Yade changed:
https://answers.launchpad.net/yade/+question/246489
Bruno Chareyre proposed the following answer:
It seems there is a bug with openmp presently. Yade is not using many cores
even with -jN1.
I tried to report the bug but launchpad has a problem at the moment
Question #246244 on Yade changed:
https://answers.launchpad.net/yade/+question/246244
Bruno Chareyre posted a new comment:
But I cannot remove or uninstall it by using the command sudo apt-get
remove atlas openblas, nothing is found.
Because atlas is not the name of a package.
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Question #246244 on Yade changed:
https://answers.launchpad.net/yade/+question/246244
Bruno Chareyre proposed the following answer:
libopenblas can give this problem (if so, this is a scipy problem independent
of Yade).
To confirm, try:
python
import scipy
If you have openblas installed
Question #246244 on Yade changed:
https://answers.launchpad.net/yade/+question/246244
Bruno Chareyre proposed the following answer:
I just realized that there is a simpler option: remove atlas libraries
(atlas, atlas-base, atlas-3gf, and so on...).
The bug comes from the fact that using
Question #246244 on Yade changed:
https://answers.launchpad.net/yade/+question/246244
Bruno Chareyre posted a new comment:
I didn't know another variant was able to break python.
Could you please post the list you see after sudo update-alternatives --config
libblas.so.3gf?
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Question #246244 on Yade changed:
https://answers.launchpad.net/yade/+question/246244
Bruno Chareyre posted a new comment:
Thanks.
You do have openblas and atlas, they are listed in the output:
* 0 /usr/lib/openblas-base/libopenblas.so
Question #245062 on Yade changed:
https://answers.launchpad.net/yade/+question/245062
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Only relative motion can change the magnitude of forces, yes.
However, a rotation of the contact pair leads to a rotation of the force
Question #245062 on Yade changed:
https://answers.launchpad.net/yade/+question/245062
Status: Open = Answered
Bruno Chareyre proposed the following answer:
(1) There should be no change of force associated to a translation of the
reference frame, therefore I'm lost after eq. 8 (included
Question #242575 on Yade changed:
https://answers.launchpad.net/yade/+question/242575
Status: Open = Answered
Bruno Chareyre proposed the following answer:
You are displaying current orientation. If you want rotation, it is like in #5.
Set b.state.refOri=b.state.ori before the test
Question #245062 on Yade changed:
https://answers.launchpad.net/yade/+question/245062
Bruno Chareyre posted a new comment:
I don't understand your question, I'm sorry.
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Question #245682 on Yade changed:
https://answers.launchpad.net/yade/+question/245682
Bruno Chareyre posted a new comment:
Hi Luc,
1/ put all LBM-stuff into the pkg/LBM: if you think it is better there
is no problem. It is just necessary to keep in mind that LBM is coupled
with DEM, and I
Question #245755 on Yade changed:
https://answers.launchpad.net/yade/+question/245755
Bruno Chareyre posted a new comment:
the actual Yade version
Do you use actual for current also in german? ;)
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Question #245755 on Yade changed:
https://answers.launchpad.net/yade/+question/245755
Bruno Chareyre proposed the following answer:
The sequence is like this:
1. integrate clumps movement (using total mass and total inertia),
changing clump's pos/ori
2. for each member: pos = clumpPos
and experience with Yade and other DEM softwares.
Informations about the program and registration will be updated on the webpage
(https://yade-dem.org/wiki/1st_Yade_Workshop)
With best regards.
Bruno Chareyre
(*) Yet Another Discrete Element workshop!
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Question #245755 on Yade changed:
https://answers.launchpad.net/yade/+question/245755
Bruno Chareyre proposed the following answer:
Hello Pascal,
B.state.inertia = EigVal
B.state.ori = Quaternion(EigVec)
It is the right way to approach the problem (inertia is a vector for it
contains
Question #245380 on Yade changed:
https://answers.launchpad.net/yade/+question/245380
Bruno Chareyre posted a new comment:
This one deserves the Best Answer Prize!
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Question #244958 on Yade changed:
https://answers.launchpad.net/yade/+question/244958
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Hi,
Unfortunately height0 is read-only, you can't modify it. I will probably turn
it read-write, it cannot hurt.
Another note
Question #245238 on Yade changed:
https://answers.launchpad.net/yade/+question/245238
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Hello,
These old images were only proofs of concepts, there is no paper on this as far
as I know. The cube elements are Box[1] elements
Question #244960 on Yade changed:
https://answers.launchpad.net/yade/+question/244960
Bruno Chareyre posted a new comment:
It sounds like a scope issue.
I can't tell now if -l was importing in the right scope in ubuntu 10.04 (which
I was using when adding the option).
For 12.04 you are right
Question #244634 on Yade changed:
https://answers.launchpad.net/yade/+question/244634
Bruno Chareyre proposed the following answer:
it won't change anything for me, am I right?
Yes.
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Question #244312 on Yade changed:
https://answers.launchpad.net/yade/+question/244312
Bruno Chareyre posted a new comment:
I didn't follow the discussion, but this is attracting me:
when using replaceByClumps in a periodic space sometimes balls are created
outside periodic cell
It should
Question #244604 on Yade changed:
https://answers.launchpad.net/yade/+question/244604
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Nope.
The current formulation is rooted in Stokes assumption
(viscous/laminar/creeping flow). Inertial effects are disregarded, hence
Question #244634 on Yade changed:
https://answers.launchpad.net/yade/+question/244634
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Hi Giulia,
Presently the prebuilt packages are compiled without openmp, i.e. not
parallelized. Not sure if/when it will be fixed
Question #244277 on Yade changed:
https://answers.launchpad.net/yade/+question/244277
Bruno Chareyre proposed the following answer:
yade has no good parallelizied code. so you get no linear speedup and
more than 4 thread are in my experience not usefull
Worst than no good parallelized, yade
Question #240608 on Yade changed:
https://answers.launchpad.net/yade/+question/240608
Status: Open = Answered
Bruno Chareyre proposed the following answer:
what can I do to assure the resource of my workstation can be used as
much as possible.
Use yade-batch to run 6 or 7 single-thread jobs
Question #244277 on Yade changed:
https://answers.launchpad.net/yade/+question/244277
Status: Open = Answered
Bruno Chareyre proposed the following answer:
I observed that if I run -jN when the number of available cores is N, the
cores that are effectively used are always changing during
Question #244277 on Yade changed:
https://answers.launchpad.net/yade/+question/244277
Bruno Chareyre posted a new comment:
yade-batch -h
So, how did you know about yade-batch -h? ;)
Thx.
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Question #244277 on Yade changed:
https://answers.launchpad.net/yade/+question/244277
Bruno Chareyre proposed the following answer:
yade-batch -j16 --job-threads=1 file.table file.py: 16 simulations at
a time with 1 core each
Erm... yes I know. My question was: do you get similar slow down
Question #244203 on Yade changed:
https://answers.launchpad.net/yade/+question/244203
Bruno Chareyre proposed the following answer:
It sounds like the use of text files would overkill.
This should be enough:
for b in O.bodies:
#define your force for body b
O.forces.addF(b.id,force
Question #240738 on Yade changed:
https://answers.launchpad.net/yade/+question/240738
Bruno Chareyre posted a new comment:
@Jan
It sounds interesting. I know people who would use that already.
Besides, paraview can be commanded in python it seems. Does anyone have
an idea how it works anf if we
Question #243909 on Yade changed:
https://answers.launchpad.net/yade/+question/243909
Status: Open = Answered
Bruno Chareyre proposed the following answer:
this types of self-contacts have not been included by Yade
It has been introduced at least for wires (chained cylinders) and grids
Question #240738 on Yade changed:
https://answers.launchpad.net/yade/+question/240738
Bruno Chareyre posted a new comment:
I just tried save as - *.py in paraview. The result looks like a
regular python script starting with soome imported paraview lib. My
guess is it can be executed without
Question #240738 on Yade changed:
https://answers.launchpad.net/yade/+question/240738
Bruno Chareyre proposed the following answer:
Good news. save as - *.py works like a charm and generate a 3D image
without the gui. The dumb mistake was to save my script with name
paraview.py. Obviously
Question #242575 on Yade changed:
https://answers.launchpad.net/yade/+question/242575
Bruno Chareyre posted a new comment:
Also it would be nice if possible to invisible the particles
It was a good idea Ehsan. It is now [1] possible:
yade.qt.Renderer().hideBody(id)
yade.qt.Renderer().showBody(id
Question #242646 on Yade changed:
https://answers.launchpad.net/yade/+question/242646
Bruno Chareyre posted a new comment:
Accepted.
Are you registered to yade-dev list Burak? Else please do so. I would
like to keep all discussions in the same place, for this reason I will
forward your post
Question #243909 on Yade changed:
https://answers.launchpad.net/yade/+question/243909
Bruno Chareyre proposed the following answer:
Hello David,
Some details are given in [1].
For your questions:
1) It is actually a series of cylinders without particles. No difference
appart from shape.
2) I
Question #242890 on Yade changed:
https://answers.launchpad.net/yade/+question/242890
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Could please open a bug report and post an example script?
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Question #242887 on Yade changed:
https://answers.launchpad.net/yade/+question/242887
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Hi,
It could be a bug report. Thank you for details and script, anyway.
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Question #242646 on Yade changed:
https://answers.launchpad.net/yade/+question/242646
Bruno Chareyre posted a new comment:
Thank you very much for contributing. Do you plan to extend to
rotational DOFs?
You mention advantages of the adaptative scheme over the symplectic
Euler scheme
Question #242646 on Yade changed:
https://answers.launchpad.net/yade/+question/242646
Status: Open = Needs information
Bruno Chareyre requested more information:
the lack of adaptive integration where the step size is unpredictable
for my cases.
I'm curious about that, since I have never
Question #242646 on Yade changed:
https://answers.launchpad.net/yade/+question/242646
Bruno Chareyre posted a new comment:
I see, thanks.
I'm eager to see an example simulation with these deformable elements. :)
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Question #242646 on Yade changed:
https://answers.launchpad.net/yade/+question/242646
Status: Open = Answered
Bruno Chareyre proposed the following answer:
I want to use adaptive integration algorithms of odeint library.
Ok. So, the logic is the same, but there is indeed a need to go
Question #242646 on Yade changed:
https://answers.launchpad.net/yade/+question/242646
Bruno Chareyre proposed the following answer:
I meant, c++ is needed if you want to be able to switch between
different methods with one single parameter. Otherwise, an adaptative
scheme can also be implemented
Question #242646 on Yade changed:
https://answers.launchpad.net/yade/+question/242646
Bruno Chareyre proposed the following answer:
As Vaclav suggests, you can imagine many different combinations of engines.
Do you really need a special library for Runge-Kutta?
You could simply run regular
Question #242575 on Yade changed:
https://answers.launchpad.net/yade/+question/242575
Bruno Chareyre posted a new comment:
Elaborating Jerome's suggestion, for future reference:
b.shape.color = scalarOnColorScale( (s.state.refPos - s.state.pos).norm()
,minDisp,maxDisp)
refPos is something you
Question #242644 on Yade changed:
https://answers.launchpad.net/yade/+question/242644
Bruno Chareyre requested more information:
I see #1 and #2 just now.
What are you simulating, and what is the number of particles?
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Question #242644 on Yade changed:
https://answers.launchpad.net/yade/+question/242644
Bruno Chareyre proposed the following answer:
Hello,
The benchmark you mention (wiki) is quite old, that is why some of the
variables disapeared.
There has been a number of optimizations done after
Question #242644 on Yade changed:
https://answers.launchpad.net/yade/+question/242644
Bruno Chareyre proposed the following answer:
It sounds similar to Christian's benchmark of spheres falling on a
plane. It makes sense to compare to compare the iter/sec in both cases..
Overal
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Question #242646 on Yade changed:
https://answers.launchpad.net/yade/+question/242646
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Dear Burak,
The implementation (and also efficiency) will be very different depending on
this key question: should the contact list
Question #236454 on Yade changed:
https://answers.launchpad.net/yade/+question/236454
Bruno Chareyre requested more information:
did someone ever use Bruno's suggestion in practice ?
I did. :)
I don't understand your last post. Does it need to repeat the same
assignment many times?!...
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Question #242586 on Yade changed:
https://answers.launchpad.net/yade/+question/242586
Status: Open = Answered
Bruno Chareyre proposed the following answer:
if sdec1-alphaKtw==0 and sdec2-alphaKtw==0 then ktw = 0
It makes sense.
By the way, the twisting moment leads to crazy spin
Question #242586 on Yade changed:
https://answers.launchpad.net/yade/+question/242586
Bruno Chareyre posted a new comment:
It is not difficult to include these moments in the timestep determination from
a mathematical POV.
The problem is programming it: not all interactions have rotational terms
Question #242605 on Yade changed:
https://answers.launchpad.net/yade/+question/242605
Status: Open = Answered
Bruno Chareyre proposed the following answer:
After a short discussion with Luc, defining a grow() function inside the
IP classes seems to be the best/cleaner way.
It would be called
Question #242137 on Yade changed:
https://answers.launchpad.net/yade/+question/242137
Bruno Chareyre proposed the following answer:
Another curiosity question : may walls sometimes be periodic, or never
?
If you meant Box instead of Wall, they can be periodic in theory, but
practically
Question #240620 on Yade changed:
https://answers.launchpad.net/yade/+question/240620
Bruno Chareyre proposed the following answer:
Is it sufficient to delete the folder I installed my yade built to or
are there more things to take care of?
It is sufficient. Installation is only a copy-paste
Question #241137 on Yade changed:
https://answers.launchpad.net/yade/+question/241137
Status: Open = Answered
Bruno Chareyre proposed the following answer:
I suspect a problem in python/matplotlib, not in yade, but the only way to now
is to do some real debugging.
I don't think any of us
Question #241137 on Yade changed:
https://answers.launchpad.net/yade/+question/241137
Status: Open = Answered
Bruno Chareyre proposed the following answer:
After uncommenting lines 127-138 I can still plot directions normally (Yade
1.05.0).
Sure you did not change something else? If so, you
Question #241338 on Yade changed:
https://answers.launchpad.net/yade/+question/241338
Bruno Chareyre proposed the following answer:
If saving all crashes, then it is a bug (any volunteer with a decent
connexion: don't hesitate to report the bug)
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Question #241615 on Yade changed:
https://answers.launchpad.net/yade/+question/241615
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Dear Xin,
I started to type a reply (below) but actually I think I don't really
understand your question.
The title suggests that you
Question #241137 on Yade changed:
https://answers.launchpad.net/yade/+question/241137
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Working script is below (note the additional line key=table.key, I just fixed
that in trunk), does it crash for you?
Bruno
_
from
Question #241071 on Yade changed:
https://answers.launchpad.net/yade/+question/241071
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Probably an inconsistent definition of the boundaries of the problem,
but I will need to check your script to understand better Ehsan
Question #240920 on Yade changed:
https://answers.launchpad.net/yade/+question/240920
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Dear Ehsan,
The problem is you are trying to use triax engine which requires that the
problem is bounded by 6 rigid planes.
In your
Question #240738 on Yade changed:
https://answers.launchpad.net/yade/+question/240738
Bruno Chareyre proposed the following answer:
My impression is that it is not possible with paraview, but better ask
on paraview forum if you need experts answers.
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Question #240872 on Yade changed:
https://answers.launchpad.net/yade/+question/240872
Status: Open = Answered
Bruno Chareyre proposed the following answer:
if !homoDeform, the sample deformation will be caused indirectly by
boundaries particles being closer from the center of the cell
Question #240608 on Yade changed:
https://answers.launchpad.net/yade/+question/240608
Status: Open = Answered
Bruno Chareyre proposed the following answer:
Dear Fu,
I am not sure what you mean by simulation scale. Is it the number of
particles?
If so, there is no easy solution
Question #240557 on Yade changed:
https://answers.launchpad.net/yade/+question/240557
Bruno Chareyre requested more information:
QGLViewer/constraint.h: No such file or directory
This is before your modifications of the cmake files, right?
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Question #240557 on Yade changed:
https://answers.launchpad.net/yade/+question/240557
Status: Open = Needs information
Bruno Chareyre requested more information:
What is your system? (please always mention this in questions)
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Question #240509 on Yade changed:
https://answers.launchpad.net/yade/+question/240509
Status: Open = Answered
Bruno Chareyre proposed the following answer:
To get rid of the (anti/)clockwise numbering question, you can display
both faces (GL_FRONT_AND_BACK*).
*https://www.opengl.org/sdk
Question #240275 on Yade changed:
https://answers.launchpad.net/yade/+question/240275
Bruno Chareyre proposed the following answer:
if explained by yade code, it is like
O.bodies[1].groupMask=[1,2]
Jerome's suggestion is:
O.bodies[1].groupMask=3
Which is indeed the correct translation of [1,2
Question #240275 on Yade changed:
https://answers.launchpad.net/yade/+question/240275
Bruno Chareyre posted a new comment:
Forget about my last note. It will absolutely not work. Bitmasks are sometimes
confusing for me as well...
If you understand why 3 is the translation of [1,2] (Jan's post
Question #240167 on Yade changed:
https://answers.launchpad.net/yade/+question/240167
Bruno Chareyre proposed the following answer:
Hicham, please open a new question if it is unrelated.
B
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Question #240024 on Yade changed:
https://answers.launchpad.net/yade/+question/240024
Status: Open = Answered
Bruno Chareyre proposed the following answer:
As Jerome suggests, it is find() (returns element) not found()
returns true/false.
Is there already a class where this function is used
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