yade randomperipck module

If you expand particles even more, they will overlap. It is probably simpler than changing stiffness.
You can use the function growParticles(multiplier=...), added recently.

For rRelfuzz, it's explained in the documentation:
https://yade-dem.org/doc/yade.pack.html?highlight=makecloud#yade._packSpheres.SpherePack.makeCloud

It could be changed relatively easily in the source code (e.g. for gaussian) here:
https://github.com/yade/trunk/blob/master/pkg/dem/SpherePack.cpp#L91

Hi Ali,

as far as I know:
- rRelFuzz is standard deviation of gaussian distribution of particle radius
- currently the prescribed overlap is not implemented, but it should not be
very difficult to reimplement it to result in some defined overlap / force

I will have a look and confirm it (or not :-) this or next week (or
somebody else will do it :-).

cheers
Jan

2012/10/18 Ali Naseri <email address hidden>

> Question #211583 on Yade changed:
> https://answers.launchpad.net/yade/+question/211583
>
> Description changed to:
> Hi
>
> I've used 'randomperipack" module to create a dense packing of
> particles. My final goal is to have a particle packing with a certain
> degree of overlap on average. Is it possible to manipulate the stiffness
> inside this class to let particles penetrate to some degree into
> eachother instead of just touching? What I do now is expanding the
> particles by increasing their radius uniformly.
>
> Another question is about the rRelfuzz inside the class. If you define a
> value for rRelfuzz does that give you a gaussian distribution of
> particle radius around the mean?
>
>
> Cheers,
>
> Ali
>
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>rRelFuzz is standard deviation of gaussian distribution of particle radius

Eh... no ;)