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[Bernardo Albuquerque <question320069@xxxxxxxxxxxxxxxxxxxxx>]

New question #320069 on Yade:
https://answers.launchpad.net/yade/+question/320069

Hello all,

I am trying to make an oedometric test but for some reasons I need the upper plane to be a body that interacts with the spheres inside the box. I attempted to create a box object and define its density according to the stress I want to aply in the test. For that i used the simple equation

 density = GoalStress * OedometerCrossSection / (gravity * BoxVolume)

However, I cant achieve the stress I am seeking. I am calculating this stress with O.forces.f(box#)/OedometerCrossSection. The interesting fact is that even if I change the box density the calculated stress is always the same. I first thought that the explanation to my problem was that box objects are not affected by gravity, but I performed a simple script and eliminated that hypothesis. Anybody knows what it could  be? 

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