yade-users team mailing list archive

[luc scholtes <lscholtes63@xxxxxxxxx>]

Thanks Vaclav!

It seems ok, however, there is probably an issue concerning some size
ratio/boundary conditions since the resulting compressive strength appears
different when applying uniaxial tests on cubic or parallelepiped samples
(with same micromechanical properties of course). It is probaly due to the
conditions imposed on boundary elements (blocked displacements and rotations
in my case) in regards to the prescribed loading?

Did someone already test that?

  Luc

2010/4/6 Václav Šmilauer <eudoxos@xxxxxxxx>

> > I am wondering if we can use the uniaxial strainer on cubic sample
> > (the answer is probably yes). As far as I understood, uniaxialStrainer
> > needs attributes (posIds, negIds, axis) from uniaxialTestFeatures to
> > work. But, I did not get how these variables can be computed for a
> > cubic sample (uniaxialTestFeatures seems to be OK only for sample with
> > a predominating length). The alternative would be to identify the
> > uniaxial features depending only on the axis of the sollicitation, but
> > I am still not very clear about that.
> >
> > Do you have any advice to do so?
> Hi,
>
> I added axis (0=x,1=y,2=z; -1 by default) parameter to
> uniaxialTestFeatures in r2129, if that helps you. That function is
> probably not very robust, so I cannot guarantee that it behaves well. (I
> hope it does)
>
>
> https://www.yade-dem.org/sphinx/yade.utils.html#yade.utils.uniaxialTestFeatures
>
> HTH, Vaclav
>
>
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