yade-users team mailing list archive

[Václav Šmilauer <eudoxos@xxxxxxxx>]

On Thu, 7 Oct 2010 12:45:00 +0200, Janek Kozicki <janek_listy@xxxxx>
wrote:
> Bruno Chareyre said:     (by the date of Thu, 07 Oct 2010 11:44:35
+0200)
> 
>> 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
contact 
>> points), is it already implemented?

Like this?
https://www.yade-dem.org/sphinx/yade.eudoxos.html#yade._eudoxos.InteractionLocator.macroAroundPt
(Sorry, since it was in my private module, the docs is lacking; find the
algorith described qt
https://www.yade-dem.org/sphinx/yade.eudoxos.html#yade._eudoxos.SpiralInteractionLocator2d.macroAroundPt
though)

And also this one (where you can pass a callback function object)
https://www.yade-dem.org/sphinx/yade.eudoxos.html#yade.eudoxos.IntrSmooth3d

> 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.

v