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[Jan Stránský <question657225@xxxxxxxxxxxxxxxxxxxxx>]

Question #657225 on Yade changed:
https://answers.launchpad.net/yade/+question/657225

Jan Stránský posted a new comment:
Hi Sam,

Bruno's answer is perfect, it answered your question 100%, but as I knew
your previous problem, you actually asked something totally different..

If you want to get a good answer, try to create a good question.
Before sending it, read it carefully and imagine you know nothing about the problem (try to describe it in relevant level of details). Also imagine you don't want to read/try Python code, so the question and problem should be understandable without the script.

> I am trying to model a single sand particle

try not to use the same word (particle) in several meanings (a bunch of DEM particles and DEM particle itself). Use e.g. 
my suggestion: ... to model a single grain. It consist of many (742 in my specific case) spheres. I am using CohFrictMat.

> but my result is very low

what "result" is? strength? stiffness? low number of particles?
It is clear from the end of the question, but why not to make it clear directly?

> I know my interaction is not enough (i =18)

For a newcomer to the problem, this sentence makes absolutely no sense... What does i=18 mean? Of course, one (!) interaction is not enough to model a sand grain..
my suggestion: I know the NUMBER of interactionSSSS is not enough. I have 742 spheres in the grain, but only 18 interactions.

> how can I increase interaction between my particles

again, increase what? naturally one would understand strength.
my suggestion: ... increase NUMBER of interactionSSSS?

cheers
Jan

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