Is TriaxialStressController specific for boxes or could it be used for cylinders

Can somebody please help me with the above. It is a little urgent.

Thanks
yogesh

On Sat, May 3, 2014 at 3:17 PM, yogesh <<email address hidden>
> wrote:

> New question #248093 on Yade:
> https://answers.launchpad.net/yade/+question/248093
>
> Hey,
> I wanted to ask the following:
> Is TriaxialStressController specific for boxes or could it be used for
> cylinders?
>
> I want to achieve the following:
> 1. generating an Isotropic Stress State for Cylindrical Sample until a
> required porosity is achieved, followed by
> 2. stress controlled cyclic loading
>
> Please help me with it.
> Thanking you in advance,
>
> Yogesh
>
>
>
> --
> You received this question notification because you asked the question.
>

Hello Yogesh,

> Can somebody please help me with the above. It is a little urgent.
>

Saturday is not the best time to ask urgent questions :-)

>
> > I wanted to ask the following:
> > Is TriaxialStressController specific for boxes or could it be used for
> > cylinders?
>

from documentation [1]: "An engine maintaining constant stresses or
constant strain rates on some boundaries of a parallepipedic packing. ...".
So according to the documentations it is not designed for cylinders.

> >
> > I want to achieve the following:
> > 1. generating an Isotropic Stress State for Cylindrical Sample until a
> > required porosity is achieved, followed by
>

you can have a look at [2], it is a script for compression with lateral
confining stress modeled by loaded facets. After some modifications
(introducing the same concept also for axial direction) it may be what you
want

> > 2. stress controlled cyclic loading
>

It depends on the definition of cyclic loading (axial compression?), but
basicly it should not be a big problem..

cheers
Jan

[1]
https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.TriaxialStressController
[2]
http://bazaar.launchpad.net/~yade-pkg/yade/git-trunk/view/head:/examples/concrete/triax.py

Hi yogesh, if you don't insist on Yade, you can check out Woo cylindrical triaxial test (with membrane boundary): http://woodem.eu/doc/woo.pre.html#woo-pre-cyltriax HTH, václav