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Re: average stress in particles


On Thu, 7 Oct 2010 12:45:00 +0200, Janek Kozicki <janek_listy@xxxxx>
> Bruno Chareyre said:     (by the date of Thu, 07 Oct 2010 11:44:35
>> Hi,
>> I'd like to get the mean stress tensor in particles using the contour 
>> integral of forces (i.e. F_i*L_j/V on one particle, with L_j the
>> points), is it already implemented?

Like this?
(Sorry, since it was in my private module, the docs is lacking; find the
algorith described qt

And also this one (where you can pass a callback function object)

> I think that a PhD student at my university has it already, in some a
> bit older version of yade. I'm not sure if it is exactly what you
> want: he cuts a box of volume inside a sample, finds all spheres that
> cross this box boundary, gets their interaction forces and calculates
> stresses. Also checking if the inside forces equal to outside forces.

I hope we are going to have 3 almost-identical implementations of the same
functionality, like with the stress tensor.