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[Bruno Chareyre <question258401@xxxxxxxxxxxxxxxxxxxxx>]

Question #258401 on Yade changed:
https://answers.launchpad.net/yade/+question/258401

Bruno Chareyre proposed the following answer:
Hi Luis,
Tip penetration should occure in a granular layer wich is initially at static equilibrium, no?
I don't see anything in your script for generating such initial configuration. Did you check what happens in a 3D view?
If you are lucky the travel time of the tip is enough to let particles equilibrate before ppenetration starts, else most likely the force you get results from colissions of bouncing spheres with the tip, clearly not the experimental situation.

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