yade-users team mailing list archive

[Bruno Chareyre <bruno.chareyre@xxxxxxxxxxx>]

It is clear now. It should be enough to give mass=m, isDynamic()=true, 
and apply force on the wall.
You don't really need TriaxiaStressController, but  it could help to 
record stress and strain.
The interesting thing would be to implement this as optional in 
TriaxialSTressController.
It would let the stress control be switched between static and dynamic 
stress control in the same engine (exactly what we have now in the 
periodic case).

BRuno


You can just assign the wall mass and apply force


nejib hadda a écrit :
> Hi Bruno,
>
> Actually, I switched to forces applied on walls instead of walls
> translation because I want that my wall  moves under a stress load equal
> to some d_Sig= X - f(Sig1,Sig2,Sig3) where X contstant stress that do
> not changes while iterating.
> I don't see how to make this work using wall translation ('max_vel' for
> stress control).
>
> Any suggestion ?
>
>
> Le jeudi 17 juin 2010 à 15:48 +0200, Bruno Chareyre a écrit :
>   
> > Walls have mass, like other bodies.
> > It is not very clear for me what you want to do Nejib. What is the 
> > difference with the stressController engine?
> > "Applying a force" means adding a vector to the current body force 
> > vector, it doesn't need or imply anything in terms of dynamic or mass.
> >
> > Bruno
> >
> >
> > Anton Gladky a écrit :
> >     
> > > 2010/6/17 nejib hadda <nejib.hadda@xxxxxxxxxxx 
> > > <mailto:nejib.hadda@xxxxxxxxxxx>>
> > >
> > >     .....I want to know  if the walls need to be dynamic when applying
> > >     forces on them?
> > >
> > >
> > > Walls are NOT dynamic in any case. They do not have a mass. You can 
> > > only move them, they cant move by themselves because of interaction.
> > >
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>   


--
_______________
Bruno Chareyre
Associate Professor
Grenoble INP
Lab. 3SR
BP 53 - 38041, Grenoble cedex 9 - France
Tél : 33 4 56 52 86 21
Fax : 33 4 76 82 70 43
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