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[kan <nicessgg@xxxxxxxxx>]

Thanks, Bruno,

I think I did not describe the question clearly.
my question is how to get the force from the force boundary. for example, we
use a rock sample to do the compress test. so we have to force boundary from
the upper face and the the lower face. then how to get the foce on each
grain from the boundary? we will say the force applied on the surface is
1000N, and the area is around 5 square cm, then how to convert the 1000N to
the particle which contacting with the boundary (like a steel surface)?

Regards.

Kan


Message: 2
Date: Fri, 25 Jan 2008 10:53:29 +0100
From: Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>
Subject: Re: [Yade-users] Yade-users Digest, Vol 19, Issue 15
To: yade-users@xxxxxxxxxxxxxxxx
Message-ID: <4799B199.7060704@xxxxxxxxxxx>
Content-Type: text/plain; charset=UTF-8; format=flowed

I don't really understand your question. There is no conversion from
stresses to forces, the conversion goes from forces to stress.
If you find a way to explicitely convert stresses into forces in a
sphere packing with friction, well... you should apply for the Nobel
Prize ;-).

Bruno





kan a ?crit :
> Vaclav, Bruno
>
> Thanks to both of you very much.
> Then how about the convertion from the stress to the force on each
> particle, where the stresses are from the boundary ?
>
> kan
>

--

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Chareyre Bruno
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Institut National Polytechnique de Grenoble
Laboratoire 3S (Soils Solids Structures) - bureau E145
BP 53 - 38041, Grenoble cedex 9 - France
T?l : 33 4 56 52 86 21
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