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Re: [Question #697600]: Contact (dilation) angle between particles
Question #697600 on Yade changed:
Status: Open => Needs information
Jan Stránský requested more information:
> I hope this is clear for you.
No, sorry, the question is very (and actually more and more) confusing..
How is "contact angle using here means dilation angle (ψ)" from #2
related to "the contact angle described here" from #3?
The #3 definition is really an angle (or vector in 3D) of the
interaction. You have many interactions, access to the data, you can
easily do whatever with the data, e.g. output a distribution.
The #2 definition is some macroscopic dimensionless quantity which is
called angle "by chance" because the value can be interpreted as an
angle in a graph. (similarly to the friction angle).
AFAIK ψ is a ratio of volumetric strain and shear strain.
How would you / do you want to define it for one contact / region (to make a distribution)?
> if there are two particles of the same size ...
any difference from the case of different size?
> ... horizontal ... would be 90 degrees. ... right on top of the other
one ... would be 0 degrees.
How is this clear purely geometric meaning related to dilation angle (ψ)
(volumetric strain / shear strain)?
Please make clear what you want.
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