Question #258686 on Yade changed:
https://answers.launchpad.net/yade/+question/258686
Status: Open = Answered
wangxiaoliang proposed the following answer:
Relationship between macroscopic properties such as friction angle and
dilatancy on phi eTaRoll and alphaKr depends on the initial
Question #258034 on Yade changed:
https://answers.launchpad.net/yade/+question/258034
Status: Open = Answered
wangxiaoliang proposed the following answer:
you need to calibrate these parameters
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New question #247246 on Yade:
https://answers.launchpad.net/yade/+question/247246
Recently, I installed ubuntu 12.04, and installed Yade-trunk successfully
All the packages are installed, and make and make install both run
successfully, though with some warning.
When I run Yade, there is error
Question #247246 on Yade changed:
https://answers.launchpad.net/yade/+question/247246
wangxiaoliang posted a new comment:
Besides, I installed Yade 0.90.1, same errors happened when running yade
I think it should be duo to ubuntu or packages itself?
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Question #247246 on Yade changed:
https://answers.launchpad.net/yade/+question/247246
Status: Answered = Solved
wangxiaoliang confirmed that the question is solved:
It works now. libqglviewer-qt4-dev package should be installed instead
of libqglviewer-dev in Ubuntu 12.04 just as shown
Question #246843 on Yade changed:
https://answers.launchpad.net/yade/+question/246843
Status: Answered = Open
wangxiaoliang is still having a problem:
After clean all files in directory build, make has passed. But when
running yade, where is still error shown below
./yade-2014-04-10.git
Question #232876 on Yade changed:
https://answers.launchpad.net/yade/+question/232876
Status: Open = Answered
wangxiaoliang proposed the following answer:
Read the newest yade manual, the new version of yade has changed
CapillaryPressure of capillary physics into capillaryPressure.
Please
Question #231810 on Yade changed:
https://answers.launchpad.net/yade/+question/231810
wangxiaoliang posted a new comment:
#1
if I am not wrong, there is a relaxtion process of strain rate loading
(straindamping), we can not maintain in the relaxtion process, rate1 + rate2 +
rate3 = 0.0, right
Question #229380 on Yade changed:
https://answers.launchpad.net/yade/+question/229380
wangxiaoliang proposed the following answer:
Please refer to capillary physics, then u will get what u want
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Question #228058 on Yade changed:
https://answers.launchpad.net/yade/+question/228058
Status: Open = Answered
wangxiaoliang proposed the following answer:
either a lower version say 0.90.1 will do everything you need.
or u may rewrite by just a small changes, say goal1 goal2 goal3
Question #226868 on Yade changed:
https://answers.launchpad.net/yade/+question/226868
wangxiaoliang posted a new comment:
Besides, ThreeDTriaxialEngine has done two things
TriaxialStressController has not done
1) update the postions of wall with stressControl_1 2 3 being False,
2) a function
New question #226881 on Yade:
https://answers.launchpad.net/yade/+question/226881
As recommended by B Chareyre etc. use TriaxialStressController instead of
ThreeDTriaxialEngine
I still rerun the code in triax-tutorial folder, I find script1 will collapse
with a high strain rate say 2.0, but
New question #226868 on Yade:
https://answers.launchpad.net/yade/+question/226868
These days, I found that ThreeDTriaxialEngine and TriaxialCompressionEngine are
both deprecated, but still can be run.
After I read the source code of TriaxialStressController and
ThreeDTriaxialEngine, I found
Question #226868 on Yade changed:
https://answers.launchpad.net/yade/+question/226868
wangxiaoliang gave more information on the question:
And I found that TriaxialStressController has no setContactProperties as
ThreeDTriaxialEngine do
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Question #220513 on Yade changed:
https://answers.launchpad.net/yade/+question/220513
wangxiaoliang posted a new comment:
As I know, many people is running Yade on virtual machine now, including
me
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Question #216109 on Yade changed:
https://answers.launchpad.net/yade/+question/216109
wangxiaoliang posted a new comment:
thanks all.
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Question #216109 on Yade changed:
https://answers.launchpad.net/yade/+question/216109
wangxiaoliang posted a new comment:
yes Christian。 I did that like you said
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New question #216109 on Yade:
https://answers.launchpad.net/yade/+question/216109
In a triaxial compression engine,
After isotropic compression, I delete a particle by O.bodies.erase(10), erase
is successful, but the continuing
deviatoric compression met error Segmentation fault (core dumped)
Question #216109 on Yade changed:
https://answers.launchpad.net/yade/+question/216109
wangxiaoliang gave more information on the question:
Well, our mission is to understand the characteristic of granular of
granular media after erosion by water, background of which is
piping or dam-break
Question #216109 on Yade changed:
https://answers.launchpad.net/yade/+question/216109
Status: Open = Solved
wangxiaoliang confirmed that the question is solved:
problem is solved thanks to Jakob
people who have the same problem please refer to
https://answers.launchpad.net/yade/+question
New question #215393 on Yade:
https://answers.launchpad.net/yade/+question/215393
in yade/pkg/dem, there is a FlowEngine.cpp, but in when I run a script
including FlowEngine, error shows FlowEngine is not defined, anybody could
recompile yade with FlowEngine included, thanks
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Question #213744 on Yade changed:
https://answers.launchpad.net/yade/+question/213744
Status: Open = Answered
wangxiaoliang proposed the following answer:
Your code would not change the exsisting contact.
I think talks in the sub 2 webpages should be helpful to u
https
New question #213442 on Yade:
https://answers.launchpad.net/yade/+question/213442
There is a hot talking about how to plot force chain, however answer in this
webpage
https://lists.launchpad.net/yade-users/msg03590.html is not clear, so I just
opened this again.
I have used VTKRecorder to
Question #212885 on Yade changed:
https://answers.launchpad.net/yade/+question/212885
wangxiaoliang requested more information:
thanks Thoeni, Here I mean in Yade, how to add a legend, in the help I
haven't found that command.
Treatment of force chain is opened in another question,
https
Question #213442 on Yade changed:
https://answers.launchpad.net/yade/+question/213442
Status: Answered = Open
wangxiaoliang is still having a problem:
thanks Thoeni, you have almost solved my problems.
I have plotted force chain, but I can't choose Scalars and Vectors in
paraview as ForceN
New question #212969 on Yade:
https://answers.launchpad.net/yade/+question/212969
In the latest yade-daily or yade-stable or yade.0.90
I found there is no SnapshotEngine?
Why and How to add SnapshotEngine? BTW, VTKRecorder is ok
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Question #212969 on Yade changed:
https://answers.launchpad.net/yade/+question/212969
Status: Answered = Solved
wangxiaoliang confirmed that the question is solved:
Thanks Anton Gladky, that solved my question.
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Question #212969 on Yade changed:
https://answers.launchpad.net/yade/+question/212969
wangxiaoliang posted a new comment:
I hope the next release or daily one will solve this problem
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Question #212885 on Yade changed:
https://answers.launchpad.net/yade/+question/212885
wangxiaoliang posted a new comment:
I have tested the command recommended by Chareyre. BTW, VTKRecorder
engine will record all the information including the force chain, but
how can I plot the force chain using
New question #212869 on Yade:
https://answers.launchpad.net/yade/+question/212869
Part of the data from MicroMacroAnalyser is below, but what is meaning of every
colume?
1005
0 0.586055 1.34902 0.384492 0.154744 3.53349e-313 -3.23516e-42 8.48798e-314
-0.112338 -0.786673 -0.601412 1
1 0.107843
Question #212869 on Yade changed:
https://answers.launchpad.net/yade/+question/212869
wangxiaoliang posted a new comment:
After the istropic compression, I just add MMA engines into the global
engine like below
O.engines=O.engines[0:5]+[MicroMacroAnalyser(interval=6000)]+O.engines[5:6]
--
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New question #210907 on Yade:
https://answers.launchpad.net/yade/+question/210907
In real triaxial compression of granular sand, relative density is usually a
key parameter to control the initial state of the sample.
I want to simulate the triaxial compression using yade. topic here is all
Question #210907 on Yade changed:
https://answers.launchpad.net/yade/+question/210907
Status: Answered = Open
wangxiaoliang is still having a problem:
thanks, luc. I have read the paper many times. I am simulating a sand of
relative density of 64%, a bit dense sample. I have calibrated like
Question #210907 on Yade changed:
https://answers.launchpad.net/yade/+question/210907
wangxiaoliang gave more information on the question:
thanks Christian, I never used clump particles, I just want to use a
resistance model to model the complex shape of particles.
1), what do you mean
Question #210907 on Yade changed:
https://answers.launchpad.net/yade/+question/210907
wangxiaoliang gave more information on the question:
In plassiard's paper, he used radius-expansion method. there is one sentence in
his paper
With it, the desired porosity which corresponds to the porosity
Question #210907 on Yade changed:
https://answers.launchpad.net/yade/+question/210907
wangxiaoliang posted a new comment:
@ luc #9: I guess this should be the title of your question? I also guess that
you are using Law2_ScGeom6D_CohFrictPhys_CohesionMoment. Am I right?
Yes you are right. I know
New question #210429 on Yade:
https://answers.launchpad.net/yade/+question/210429
Law between particles are fundamental problems in yade, and also other DEM
codes, for which, the contact parameters are now mostly accepted obtained by
calibrated dem results with real triaxial compression test.
Question #210429 on Yade changed:
https://answers.launchpad.net/yade/+question/210429
wangxiaoliang posted a new comment:
Chareyre, do you mean there is micromechanical relation between Young
and packing's bulk modulus not depend on particle size? Could u
recommend some papers on dimesional
New question #209690 on Yade:
https://answers.launchpad.net/yade/+question/209690
in Yade, qt.view() will show nice picture of the trixial cell in a window,
1) can I modify the color of background in the view, usually gray, I want to
change it into white
2) How can I save the view into a
Question #209690 on Yade changed:
https://answers.launchpad.net/yade/+question/209690
Status: Answered = Solved
wangxiaoliang confirmed that the question is solved:
Thanks Klaus Thoeni, that solved my question.
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Question #208965 on Yade changed:
https://answers.launchpad.net/yade/+question/208965
Status: Answered = Solved
wangxiaoliang confirmed that the question is solved:
I reinstall my Ubuntu, now the version becomes 12.04. And problems using
cohesive materials are solved.
I will open another
Question #208965 on Yade changed:
https://answers.launchpad.net/yade/+question/208965
Status: Answered = Open
wangxiaoliang is still having a problem:
which updated version, 0.80.1 still has this problems, would u please show the
webpage of the updated source here? thanks
-原始邮件
Question #208965 on Yade changed:
https://answers.launchpad.net/yade/+question/208965
Status: Answered = Open
wangxiaoliang is still having a problem:
Well, I never install yade successful via the yade-daily, I installed
yade by download yade source and use scons, Ubuntu version of mine
Question #208965 on Yade changed:
https://answers.launchpad.net/yade/+question/208965
wangxiaoliang gave more information on the question:
Btw, I also used the 2nd way I mentioned, say
Ip2_FrictMat_FrictMat_MindlinPhys() + Law2_ScGeom_MindlinPhys_Mindlin() to
simulate triaxial compression
Question #208965 on Yade changed:
https://answers.launchpad.net/yade/+question/208965
wangxiaoliang posted a new comment:
I see, great help of u, Chareyre!
Another comment about yade, somebody juest want to add a rolling moment
to the classic Cundall model to model sand or gravel
in which
Question #208965 on Yade changed:
https://answers.launchpad.net/yade/+question/208965
wangxiaoliang posted a new comment:
thanks Chareyre for your comment
I tested script u commited, luckily it works. I have printed one of the
interaction results show below
here c is one of the interaction
New question #208965 on Yade:
https://answers.launchpad.net/yade/+question/208965
Many body here seems interested in the rolling moment type model for granular
media, including me.
however, as I have read some of the talking in this launchpad, I am not
satisfied with the answers and also I
New question #202803 on Yade:
https://answers.launchpad.net/yade/+question/202803
As somebody has pointed out, if we want to model sand dilatancy using sphere
type assembladge, rolling resistance should be included.
I have read Plassiard's paper, but moment type contact law in Yade seems
Question #199585 on Yade changed:
https://answers.launchpad.net/yade/+question/199585
wangxiaoliang posted a new comment:
Hi Jakob, as you would like to use rolling resistance, u have at least 4
DOFs ( 1 normal, 2 shear and 1 roll),
so which Ig (Interaction Geometry) do u use, ScGeom
Question #199585 on Yade changed:
https://answers.launchpad.net/yade/+question/199585
wangxiaoliang posted a new comment:
I am trying to add a rolling physics using
Ip2_MomentMat_MomentMat_MomentPhys
Law2_SCG_MomentPhys_CohesionlessMomentRotation
However, rolling parameters have no effect
Question #198594 on Yade changed:
https://answers.launchpad.net/yade/+question/198594
wangxiaoliang proposed the following answer:
E v in yad is different than that in pfc3d, but it is not important,
because everyone needs to calibrate E and v
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Question #197661 on Yade changed:
https://answers.launchpad.net/yade/+question/197661
Status: Answered = Open
wangxiaoliang is still having a problem:
well, I have three parts,
in part 1 and part 2, I generate a sample with specific relative density
and then compress to 100kPa isotropicly
New question #197661 on Yade:
https://answers.launchpad.net/yade/+question/197661
Hi all, I have some problems presented below in detail
first, I have prepared my sample using elastic-frictional type material to
generate some sample of specific relative density.
then I want to make a
New question #197411 on Yade:
https://answers.launchpad.net/yade/+question/197411
hi all
I have installed yade 0.80, and met the following errors
1) run simple code, reads can't import name log
2) run O.load(XXX.xml) reads stream error
what's wrong?
thanks
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New question #197412 on Yade:
https://answers.launchpad.net/yade/+question/197412
hi all
as I want to know the force and interaction distribution, I look into the
class interactions
handbook tells me there are geom id1 id2 isReal iterMadeReal and phys
attributes, without telling me the
Question #197412 on Yade changed:
https://answers.launchpad.net/yade/+question/197412
Status: Answered = Solved
wangxiaoliang confirmed that the question is solved:
Thanks Jan Stránský, that solved my question.
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New question #194761 on Yade:
https://answers.launchpad.net/yade/+question/194761
Hi all,
recently, I have read some papers using Yade or SDEC simulating triaxial
test over sand, and made good calibration over the dem model with experimental
models.
However, two questions puzzled.
Question #194761 on Yade changed:
https://answers.launchpad.net/yade/+question/194761
Status: Answered = Open
wangxiaoliang is still having a problem:
thanks, all of your answers are helpful to me.
I know that now if is impossible to derive macroscopic behavior from
real grain level
Question #194761 on Yade changed:
https://answers.launchpad.net/yade/+question/194761
Status: Answered = Solved
wangxiaoliang confirmed that the question is solved:
thanks a lot, all of u.
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New question #191800 on Yade:
https://answers.launchpad.net/yade/+question/191800
Hi all
In example , the box is usually 10*10*10 or 1*1*1, and particles size is
usually a bit larger than the size of real sand.
However, when I tried to model grenoble sand (d50 = 0.33mm), I use two contact
New question #191156 on Yade:
https://answers.launchpad.net/yade/+question/191156
Hi all,
In the yade-school fold ,there is one script with clump option, when I turned
the clump clump flag to true, it doesn't run.
then I have made some modification, however it will run, but it seems coming
Question #190237 on Yade changed:
https://answers.launchpad.net/yade/+question/190237
Status: Answered = Open
wangxiaoliang is still having a problem:
Hi Anton, I do not understand your comments.
I have installed (using scons) in the yade fold unpackage from the compressed
file downloaded
Question #190237 on Yade changed:
https://answers.launchpad.net/yade/+question/190237
Status: Answered = Solved
wangxiaoliang confirmed that the question is solved:
thanks nice guys, I like your help a lot
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intermediary files will be in `/home/wangxiaoliang/Yade/build-0.70.0'.
Checking whether c++ compiler g++ works...yes
Finding libstdc++ library... (cached) /usr/lib/i386-linux-gnu/libstdc++.so.6
Checking for pthread_exit(NULL) in C library pthread... yes
Checking for Python development files... ok
New question #181281 on Yade:
https://answers.launchpad.net/yade/+question/181281
Hi all.
I am trying to modify the triaxial test code (in yade-school dir) to
consider the capillary effect.
However, in the devatoric load part, when I add code to modify the
interaction physics and add
New question #180611 on Yade:
https://answers.launchpad.net/yade/+question/180611
hi all
I am doing a triaxial test for unsaturated granular sample with
CapillaryTriaxialTest
However, results of Sr and w in capStresses file are negative, why?
And how to choose Capillary suction, and other
Question #178830 on Yade changed:
https://answers.launchpad.net/yade/+question/178830
Status: Answered = Open
wangxiaoliang is still having a problem:
Chareyre, I have read your comments several times, do you mean the
sample after istropic compressed is the initial state?
If so, I don't
Question #180226 on Yade changed:
https://answers.launchpad.net/yade/+question/180226
Status: Open = Solved
wangxiaoliang confirmed that the question is solved:
thanks, Christian, my problem is solved
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Question #180226 on Yade changed:
https://answers.launchpad.net/yade/+question/180226
wangxiaoliang gave more information on the question:
Which version of yade has the option of hertzOn?
Second one, if delete the hertzOn, and copy the 10 files into my Python
script, it runs. thanks , Christian
Question #178830 on Yade changed:
https://answers.launchpad.net/yade/+question/178830
Status: Answered = Open
wangxiaoliang is still having a problem:
I agree with Jakob, makeCloud can either have an exact psd curve with inexact
porosity OR an
exact porosity with inexact psd curve
Question #180226 on Yade changed:
https://answers.launchpad.net/yade/+question/180226
wangxiaoliang posted a new comment:
By the way, I am using yade0.70
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New question #180226 on Yade:
https://answers.launchpad.net/yade/+question/180226
Hello all:
I have tested the code Capillary-Phys-example.py in
http://bazaar.launchpad.net/~yade-dev/yade/trunk/files/head:/examples/;
However, yade tells me that
New question #178830 on Yade:
https://answers.launchpad.net/yade/+question/178830
Dear
As we know, in true triaxial test of granular sand, the initial state of the
sand is important, usually controlled by the initial porosity or void ratio or
relative density.
However, in yade, makeCloud is
Question #177358 on Yade changed:
https://answers.launchpad.net/yade/+question/177358
Status: Answered = Open
wangxiaoliang is still having a problem:
what is the meaning of L_i and L_j here?
say, if in 3-d triaxial test, is it a 3*3 tensor?
thanks
-原始邮件-
发件人: Chareyre
New question #177358 on Yade:
https://answers.launchpad.net/yade/+question/177358
Dear everyone
if I use utils.fabricTensor(), what will it return
I want to know to detail information of the returned tuple
thanks
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New question #149254 on Yade:
https://answers.launchpad.net/yade/+question/149254
I am a beginner of yade!
When I try the sample in Tutorial, I foud the following error.
1 Yade [39]: s2=utils.sphere((-2,0,0),radius=1,fixed=True)error
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