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[Luc Scholtès <question689486@xxxxxxxxxxxxxxxxxxxxx>]

Question #689486 on Yade changed:
https://answers.launchpad.net/yade/+question/689486

    Status: Open => Answered

Luc Scholtès proposed the following answer:
The forces applied on the particles are proportional to their size but
the interparticle stength is also proportional to their size.

For instance, the maximum admissible force in the tangential direction
is equal to FsMax = cohesion * crossSection, with
crossSection=pi*min(R1,R2)^2

If the slope you are simulating always has the same overall volume, the
stresses induced by gravitational loading are always the same, whatever
the size of the particles making up the assemblies you are using (under
the condition that all these assemblies have similar porosities and
particles interconnectivity).

If you always use the same interparticle properties, the overall
strength of the material will always be the same, whatever the size of
the particles making up the assemblies you are using (under the
condition that all these assemblies have similar porosities and
particles interconnectivity).

The result of that is (under the condition that all assemblies have
similar porosities and particles interconnectivity): if your slope
bounces elastically under gravitational loading for a given
discretization (e.g. 10000 particles), it should bounce elastically for
every discretizations (20000, 50000, 100000).

If not, there is something wrong somewhere in your simulation and only a
MWE will help us find out what it is.

Luc

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