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:
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Status: Open = Answered
Luc Scholtès proposed the following answer:
Hello Wangxiaoliang,
If I understand well, you are able to generate your samples at different
porosities but you have some troubles when
Question #210907 on Yade changed:
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Christian Jakob proposed the following answer:
and anybody has advanced method to generate numerical sample to model
real granular sand?
Hi wangxiaoliang,
I also want to simulate a sand with DEM. So our
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:
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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 by
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 of
Question #210907 on Yade changed:
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Status: Open = Answered
Anton Gladky proposed the following answer:
Hi,
esys-particle team [1] has a tool for generating relatively dense,
non-stress packings of spheres python-demgengeo [2].
The result of
Question #210907 on Yade changed:
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Christian Jakob posted a new comment:
1), what do you mean by instabilities?
2), I the consolidation process, which friction do you use?
1.) model explodes sometimes (I have high shear modulus of 3.2e10)
2.)
Question #210907 on Yade changed:
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Chiara Modenese proposed the following answer:
On 11 Oct 2012, at 08:56, wangxiaoliang wrote:
Actually, I am talking about the sample controlling parameters, somebody
use porosity, somebody use relative
Question #210907 on Yade changed:
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Luc Scholtès proposed the following answer:
With it, the desired porosity which corresponds to the porosity of the real
specimen n = 0.40 was reached
I never understand this, n in the real specimen is 0.40, but
Question #210907 on Yade changed:
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Chareyre proposed the following answer:
I agree with Luc: the topic should be What am I doing wrong with moment law?.
The rest is useless at this point.
The recently added triax-cohesive.py includes rolling
Question #210907 on Yade changed:
https://answers.launchpad.net/yade/+question/210907
Chiara Modenese proposed the following answer:
On 11 Oct 2012, at 11:46, Chareyre wrote:
- In 2, there is no need to calm. If it goes very dynamic it's
because the parameters of the growth are not well
Question #210907 on Yade changed:
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Christian Jakob posted a new comment:
@Christian: If you use very _high_ stiffness with the non-linear model you
need to be careful to choose the right parameters for the expansion method
as Bruno
Question #210907 on Yade changed:
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Chareyre posted a new comment:
I generate the particles in a very loose state and then I apply
compression
Then the microstructure is heterogeneous, with a gradient of porosity
and fabric from the contour to
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
Question #210907 on Yade changed:
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Luc Scholtès proposed the following answer:
OK, so the problem is more general that just rolling moment related as
I supposed it was...
Maybe you should open questions for each problem because it is difficult
Question #210907 on Yade changed:
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Chiara Modenese proposed the following answer:
On 11 Oct 2012, at 15:11, Chareyre wrote:
Question #210907 on Yade changed:
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Chareyre posted a new
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