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[Karol Brzezinski <question695791@xxxxxxxxxxxxxxxxxxxxx>]

Question #695791 on Yade changed:
https://answers.launchpad.net/yade/+question/695791

    Status: Open => Answered

Karol Brzezinski proposed the following answer:
Hi,

when the facet is created its all degrees of freedom are blocked. In
your loop, you constrained the spheres, but also freed the facets. So
they disappear in the first step. Change your example, like this:


for i in O.bodies:
        if isinstance(i.shape,Sphere): #modify only Spheres' DOFs
        	i.state.blockedDOFs="yXZ"

After you run it, the rest should become clear.

Cheers,
Karol

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