[deprecated list] pregenerated sphere packings

[Václav Šmilauer]

Hi,

I would like to have pregenerated (periodic) packing of spheres which
could be used to fill arbitrary volumes just by putting one cell next to
another and then clip the result to get the exact shape. I use constant
sphere radius. How would you generate such packing? I imagine like 10k
spheres. Would it be useful for other people to have it in yade as text
file and some utilities to use it?

I know yade cannot do it at the moment, but perhaps PFC can?

Vaclav

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[Janek Kozicki]

Václav Šmilauer said: (by the date of Thu, 12 Mar 2009 11:56:53 +0100)

Post by Václav Šmilauer
Hi,
I would like to have pregenerated (periodic) packing of spheres which
could be used to fill arbitrary volumes just by putting one cell next to
another and then clip the result to get the exact shape. I use constant
sphere radius. How would you generate such packing? I imagine like 10k
spheres. Would it be useful for other people to have it in yade as text
file and some utilities to use it?
I know yade cannot do it at the moment, but perhaps PFC can?

Vincent is working with JF Jerier on filling a volume with spheres.
The volume is a mesh exported from gmsh or netgen. Or maybe is just
described as triangular faces?

You got to ask them, because Vincent has demonstrated last
month that it already works in yade. But maybe is not finished.

[Bruno Chareyre]

Post by Václav Šmilauer
Hi,
I would like to have pregenerated (periodic) packing of spheres which
could be used to fill arbitrary volumes just by putting one cell next
to another and then clip the result to get the exact shape. I use
constant sphere radius. How would you generate such packing? I imagine
like 10k spheres. Would it be useful for other people to have it in
yade as text file and some utilities to use it?
I know yade cannot do it at the moment, but perhaps PFC can?

Yes PFC can, if you pay the additional bill for the periodic boundaries
option... I don't know anybody with this version in Grenoble.
Appart from this, it is a good idea and yes it could probably be used by
more than one guy. All we need is to code the periodic boundaries in
Yade (I have ideas for this but no time...), or find somebody with a
periodic code.

Bruno
--
_______________
Chareyre Bruno
Maitre de conference

Grenoble INP
Laboratoire 3SR - bureau E145
BP 53 - 38041, Grenoble cedex 9 - France
Tél : [phone]
Fax : [phone]
________________


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[j***@public.gmane.org]

Original Message:
-----------------
From: Bruno Chareyre bruno.chareyre-***@public.gmane.org
Date: Fri, 13 Mar 2009 15:36:57 +0100
To: yade-users-oU9gvf+***@public.gmane.org
Subject: Re: [Yade-users] pregenerated sphere packings

Post by Václav Šmilauer
Hi,
I would like to have pregenerated (periodic) packing of spheres which
could be used to fill arbitrary volumes just by putting one cell next
to another and then clip the result to get the exact shape. I use
constant sphere radius. How would you generate such packing? I imagine
like 10k spheres. Would it be useful for other people to have it in
yade as text file and some utilities to use it?
I know yade cannot do it at the moment, but perhaps PFC can?

Yes PFC can, if you pay the additional bill for the periodic boundaries
option... I don't know anybody with this version in Grenoble.
Appart from this, it is a good idea and yes it could probably be used by
more than one guy. All we need is to code the periodic boundaries in
Yade (I have ideas for this but no time...), or find somebody with a
periodic code.

Bruno



Hi,

I know somebody with a periodic code. It is Christophe Martin (Professor
at University of Grenoble, laboratory SIMAP), He has developed Dp3d in
Fortran. Normally, this code is free.
If you are interesting, I can send him an email in order to know how to
download his code.

JF



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[Mohammad Nurul Islam]

Hi,
Program Code "OVAL" (OPen source DEM code) used Periodic Boundary.If You are interested I can send to You the source Code.

oval
Matthew R. Kuhn
University of Portland

Download link and for documentation
http://faculty.up.edu/kuhn/kuhn.html

Regards,
Mohammad Nurul Islam
............................................
Mohammad Nurul Islam
Soil Mechanics Lab
Department of Civil and Environmental Engineering
Saitama University
Japan.
Mobile No. 080 3466 0918
........................................................
Lecturer
Department of Civil Engineering
Rajshahi University of Engineering & Technology (RUET)
Rajshahi-6204
Bangladesh




________________________________
From: "jerier-N3XS46bLdNOfVC/***@public.gmane.org" <jerier-N3XS46bLdNOfVC/***@public.gmane.org>
To: yade-***@lists..launchpad.net
Sent: Friday, March 13, 2009 11:58:51 PM
Subject: Re: [Yade-users] pregenerated sphere packings



Original Message:
-----------------
From: Bruno Chareyre bruno.chareyre-***@public.gmane.org
Date: Fri, 13 Mar 2009 15:36:57 +0100
To: yade-users-oU9gvf+***@public.gmane.org
Subject: Re: [Yade-users] pregenerated sphere packings

Post by Václav Šmilauer
Hi,
I would like to have pregenerated (periodic) packing of spheres which
could be used to fill arbitrary volumes just by putting one cell next
to another and then clip the result to get the exact shape. I use
constant sphere radius. How would you generate such packing? I imagine
like 10k spheres. Would it be useful for other people to have it in
yade as text file and some utilities to use it?
I know yade cannot do it at the moment, but perhaps PFC can?

Yes PFC can, if you pay the additional bill for the periodic boundaries
option... I don't know anybody with this version in Grenoble.
Appart from this, it is a good idea and yes it could probably be used by
more than one guy. All we need is to code the periodic boundaries in
Yade (I have ideas for this but no time...), or find somebody with a
periodic code.

Bruno



Hi,

I know somebody with a periodic code. It is Christophe Martin (Professor
at University of Grenoble, laboratory SIMAP), He has developed Dp3d in
Fortran. Normally, this code is free.
If you are interesting, I can send him an email in order to know how to
download his code.

JF



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[Luc Sibille]

Hi Vaclav,

The making of the initial assembly of particles in DEM is an
important and often time consumming step. So I don't think I can help
you, but I think that a such process of generation of packings of
particles should very interesting and usefull.

Best,

Luc

Post by Václav Šmilauer
Hi,
I would like to have pregenerated (periodic) packing of spheres which
could be used to fill arbitrary volumes just by putting one cell next to
another and then clip the result to get the exact shape. I use constant
sphere radius. How would you generate such packing? I imagine like 10k
spheres. Would it be useful for other people to have it in yade as text
file and some utilities to use it?
I know yade cannot do it at the moment, but perhaps PFC can?
Vaclav
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--
Luc Sibille

Université de Nantes - Laboratoire GeM UMR CNRS

IUT de Saint Nazaire
58, rue Michel-Ange - BP 420
44606 Saint-Nazaire Cedex, France

Tel: [phone]

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