silo flow

Asked by Maciej NIedostatkiewicz

I need to simulate the silo control flow: rectangular silo 20x7x50 cm, filled with grains with dimension 5 mm and 1 mm. I am interested in observation the shear localisation along silo walls and changes of the T (shear) and N (normal) forces along the silo wall. Till now I prepared the model in *.stl, so I stopted due to lack of code. Have You any experience with this problem, I will be very gratefull for any answer. Best regards Maciek

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Jérôme Duriez (jduriez) said :
#1

Hello Maciej,

Maybe you will need to state more clearly which is your problem ? With your .stl, you should be able to define easily in Yade, the geometry of your silo with "facets" elements : have a look at https://www.yade-dem.org/sphinx/yade.ymport.html?highlight=stl#yade.ymport.stl

Then you will need to define your spheres, and other features of your model.

To resume, the code which you'll need the most is probably the python instructions of Yade (to define which elements you want to have in your model, and so on..), give a look at https://www.yade-dem.org/sphinx/ in general...

Good luck !

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Janek Kozicki (cosurgi) said :
#2

jduriez said: (by the date of Thu, 09 Dec 2010 13:03:01 -0000)

> https://www.yade-dem.org/sphinx/yade.ymport.html?highlight=stl#yade.ymport.stl

you can also import .gts and .gmsh files. I know that Łukasz
Skarżyński uses gmsh for abaqus.

--
Janek Kozicki http://janek.kozicki.pl/ |

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Anton Gladky (gladky-anton) said :
#3

I am also actively using gmsh and very satisfied with it.
.geo files are simple and readable, gooв for parametric models.

Anton

On Thu, Dec 9, 2010 at 5:45 PM, Janek Kozicki <
<email address hidden>> wrote:

> Question #137168 on Yade changed:
> https://answers.launchpad.net/yade/+question/137168
>
> Janek Kozicki proposed the following answer:
> jduriez said: (by the date of Thu, 09 Dec 2010 13:03:01 -0000)
>
> > https://www.yade-
> dem.org/sphinx/yade.ymport.html?highlight=stl#yade.ymport.stl
>
> you can also import .gts and .gmsh files. I know that Łukasz
> Skarżyński uses gmsh for abaqus.
>
> --
> Janek Kozicki http://janek.kozicki.pl/ |
>
> You received this question notification because you are a member of
> yade-users, which is an answer contact for Yade.
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Revision history for this message
Robert Caulk (rcaulk) said :
#4

Hey Yade user, I am an automated bot :-). After reading your question, I decided to find some related threads and summarize them for you here. Please do not hesitate to follow up on my summarizations by following the links provided below.

Title: "Plan with no interactions "
Thread summary: A user seeks to simulate a shear test using Yade, focusing on measuring forces in a virtual plane without interacting with spheres. Suggested solutions involve adding a plane and measuring stress in the middle or on the boundary, though this method may not accurately represent actual interactions due to cutting of spheres by the plane.
https://answers.launchpad.net/yade/+question/309164

Title: "Creating a pack with Nc more than 6 "
Thread summary: The user encounters issues simulating a direct shear test with a density of 5.23 g/cm^3. They changed parameters but encountered an error after starting the simulation. The issue was resolved by showing the Python script for further assistance.
https://answers.launchpad.net/yade/+question/257388

Title: "Shear box simulation"
Thread summary: Mario is trying to calculate soil resistance parameters through a shear box simulation. Bruno suggested using the PeriTriaxController and provided an example script (periodic-simple-shear.py) for efficient implementation. Mario is confused about setting stress or strain through 'stressMask', understanding the meaning of the parameter 'relStressTol', and a line in the script O.cell.velGrad=Matrix3(0,6,0, 0,0,0, 0,0,0). He encountered an error while running the periodic-simple-shear-code: 'Body larger than half of the cell size'. The provided solution solved his question.
https://answers.launchpad.net/yade/+question/256400

Revision history for this message
Robert Caulk (rcaulk) said :
#5

Can you help with this problem?

Provide an answer of your own, or ask Maciej NIedostatkiewicz for more information if necessary.

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