yade-dev team mailing list archive

[luc scholtes <lscholtes63@xxxxxxxxx>]

Thank you for your suggestions. I had a look to the state class and it seems
that there is everything I need. However, I am still unable to use the
blockedDOF feature due to my lack of coding knowledge...

As it is just for some preliminary tests, I tried through python scripting
when I created my scene. I saw that DOFs can be managed through the
bodies.state['blockedDOFs'], which is great.

However, it seems that, doing so, I can only manage 1 DOF as blockedDOFs is
a bitmask which can be chosen between these values:

0 for no restriction
1 for X
2 for Y
4 for Z
8 for RX
16 for RY
32 for RZ

and I would like to avoid all rotations (in the same way as the DOF_RXRYRZ
is defined).

Does someone have any advice?

Luc




2010/1/23 Chiara Modenese <chiara.modenese@xxxxxxxxx>

>
> I think you could type something like this in the Triaxial (when you create
> the spheres):
>
> if(rotationBlocked) { body->state->blockedDOFs=State::DOF_RXRYRZ; }
>
> Chiara
>
> ----Messaggio originale----
> Da: jerome.duriez@xxxxxxxxxxxxxxx
> Data: 22/01/2010 10.54
> A: "yade-dev"<yade-dev@xxxxxxxxxxxxxxxxxxx>
> Ogg: Re: [Yade-dev] [yade dev] Abour blocked rotation
>
>
> (why not sending such messages to yade-users also ??)
>
> Hello Luc,
>
> I gave a quick look to this new version of "NewtonIntegrator" (in
> pkg/dem/Engine/GlobalEngine/). I have not already all understood, but I
> think you should look at the function "leapfrogSphericalRotate".
> I guess with setting correctly the variable blockedDOFs (defined in
> core/State.hpp), you could cancel rotations.
>
> Jerome
>
> luc scholtes a écrit :
>
> Hi all,
>
> I can see the rotationBlocked boolean in the TrixialTest and it seems that
> it could help me a bit concerning the development of my JointedRockPM as a
> prestudy before any moment input (yes, I am potentially interested too). I
> have tried to find out where this boolean is defined and how it works, but
> without any success...
>
> Does this feature still exist? If not, do you have any suggestion
> concerning the way to manage this rotation blockade?
>
> Cheers
>
>   Luc
>
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> --
> Jérôme Duriez
> ATER Iut 1 Grenoble, département GMP - Laboratoire 3S-R
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>
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